WO2012070296A1 - Appareil de production de gaz et procédé de production de gaz - Google Patents
Appareil de production de gaz et procédé de production de gaz Download PDFInfo
- Publication number
- WO2012070296A1 WO2012070296A1 PCT/JP2011/070865 JP2011070865W WO2012070296A1 WO 2012070296 A1 WO2012070296 A1 WO 2012070296A1 JP 2011070865 W JP2011070865 W JP 2011070865W WO 2012070296 A1 WO2012070296 A1 WO 2012070296A1
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- WIPO (PCT)
- Prior art keywords
- photoelectric conversion
- electrode
- electrolysis
- electrolysis electrode
- conversion unit
- Prior art date
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Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
- C01B3/042—Decomposition of water
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/02—Preparation of oxygen
- C01B13/0203—Preparation of oxygen from inorganic compounds
- C01B13/0207—Water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/50—Processes
- C25B1/55—Photoelectrolysis
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
- H02S40/38—Energy storage means, e.g. batteries, structurally associated with PV modules
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/06—Combination of fuel cells with means for production of reactants or for treatment of residues
- H01M8/0606—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants
- H01M8/0656—Combination of fuel cells with means for production of reactants or for treatment of residues with means for production of gaseous reactants by electrochemical means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E70/00—Other energy conversion or management systems reducing GHG emissions
- Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention relates to a gas production apparatus and a gas production method.
- renewable energy In recent years, the use of renewable energy is desired from the viewpoint of depletion of fossil fuel resources and the suppression of global warming gas emissions.
- renewable energy sources such as sunlight, hydropower, wind power, geothermal power, tidal power, and biomass.
- sunlight has a large amount of available energy, and there are geographical restrictions on other renewable energy sources. Because of the relatively small amount, early development and popularization of technology that can efficiently use energy from sunlight is desired.
- Possible forms of energy generated from sunlight include electrical energy produced using solar cells and solar thermal turbines, thermal energy by collecting solar energy in a heat medium, and other types of sunlight.
- Examples include storable fuel energy such as liquid fuel and hydrogen by substance reduction.
- Many solar cell technologies and solar heat utilization technologies have already been put into practical use, but the energy utilization efficiency is still low, and the cost of producing electricity and heat is still high. Technology development is underway.
- these forms of electricity and heat can be used to supplement short-term energy fluctuations, it is extremely difficult to supplement long-term fluctuations such as seasonal fluctuations, It is a problem that there is a possibility that the operating rate of the power generation equipment may be reduced due to the increase in power generation.
- storing energy as a substance, such as liquid fuel and hydrogen is extremely effective as a technology that efficiently supplements long-term fluctuations and increases the operating rate of power generation facilities. It is an indispensable technology to raise and reduce carbon dioxide emissions thoroughly.
- liquid fuels such as hydrocarbons
- gaseous fuels such as biogas and hydrogen
- solid pellets such as biomass-derived wood pellets and metals reduced by sunlight. It can.
- liquid fuel, gaseous fuel including hydrogen in terms of total utilization efficiency improvement with fuel cells, etc. solid fuel in terms of storability and energy density
- a hydrogen production technique by decomposing water with sunlight has attracted particular attention from the viewpoint that water that can be easily obtained as a raw material can be used.
- platinum is supported on a photocatalyst such as titanium oxide, and this substance is put in water to perform light separation in a semiconductor, and an electrolytic solution.
- the water is decomposed directly at high temperature using the photolysis method by reducing protons and oxidizing water, or by using thermal energy such as a high-temperature gas furnace, or indirectly by coupling with redox of metals, etc.
- Pyrolysis method that uses the metabolism of microorganisms that use light such as algae
- water electrolysis method that combines electricity generated by solar cells and water electrolysis hydrogen production equipment
- photoelectric conversion used in solar cells Examples of the method include a photovoltaic method in which electrons and holes obtained by photoelectric conversion are used in a reaction by a hydrogen generation catalyst and an oxygen generation catalyst by supporting a hydrogen generation catalyst and an oxygen generation catalyst on the material.
- the photolysis method the one that has the possibility of producing a small hydrogen production device by integrating the photoelectric conversion unit and the hydrogen generation unit is considered to be a photolysis method, a biological method, a photovoltaic method
- the photovoltaic method is considered to be one of the technologies closest to practical use.
- Patent Document 1 a titanium oxide photocatalyst electrode on which a ruthenium complex is adsorbed and a platinum electrode, an apparatus using oxidation reduction of iodine or iron is disclosed.
- Patent Documents 2 and 3 an integrated structure is adopted by connecting two layers of photocatalysts in tandem, connecting a platinum counter electrode, and sandwiching an ion exchange membrane therebetween.
- Non-Patent Document 1 a concept of a hydrogen production apparatus in which a photoelectric conversion unit, a hydrogen generation unit, and an oxygen generation unit are integrated has been announced (Non-Patent Document 1). According to this, charge separation is performed by using a photoelectric conversion unit, and hydrogen generation and oxygen generation are performed using corresponding catalysts.
- the photoelectric conversion part is made of a material used for solar cells. For example, in Non-Patent Document 2, after charge separation is performed with three silicon pin layers, a platinum catalyst is responsible for hydrogen generation and ruthenium oxide is responsible for oxygen generation.
- Non-Patent Document 3 a multi-junction photoelectric conversion material that absorbs light of different wavelengths is used by using Pt as a hydrogen generation catalyst and RuO 2 as an oxygen generation catalyst to achieve high efficiency.
- Patent Document 4 and Non-Patent Document 3 a hydrogen generation catalyst (NiFeO) and three layers of silicon pin are stacked in parallel on a substrate, and an oxygen generation catalyst (Co-Mo) is further formed on the silicon layer. ) To produce an integrated hydrogen production apparatus.
- a protective member is provided to prevent the photoelectric conversion unit and the like from coming into contact with the electrolyte because the photoelectric conversion unit and the like may be eroded by the electrolytic solution.
- the present invention has been made in view of such circumstances, and provides a gas manufacturing apparatus capable of reducing the number of parts for providing a protective member for preventing contact with an electrolyte and reducing the manufacturing cost. To do.
- the present invention provides a photoelectric conversion unit having a light receiving surface and a back surface thereof, a first electrolysis electrode and a second electrolysis electrode provided side by side on the back surface, and a peripheral portion of the first or second electrolysis electrode.
- the first and second electrolysis electrodes When the first and second electrolysis electrodes are in contact with the electrolytic solution, the first and second electrolysis electrodes utilize the electromotive force generated by the photoelectric conversion unit receiving light.
- the electrolytic solution is electrolyzed to generate a first gas and a second gas, respectively.
- the seal portion has corrosion resistance to the electrolytic solution, and the first or second electrolysis electrode and the photoelectrical electrode are provided.
- a gas manufacturing apparatus characterized in that an electrolytic solution does not flow between the converter and the converter.
- the first and second electrolysis electrodes are configured to electrolyze the electrolytic solution using the electromotive force generated by the light received by the photoelectric conversion unit to generate the first gas and the second gas, respectively. Since it is provided, the first gas can be generated on the surface of the first electrolysis electrode, and the second gas can be generated on the surface of the second electrolysis electrode. According to the present invention, since the first electrolysis electrode and the second electrolysis electrode are provided on the back surface of the photoelectric conversion portion, light can be incident on the light receiving surface of the photoelectric conversion portion without passing through the electrolyte solution. It is possible to prevent absorption of incident light and scattering of incident light.
- the amount of incident light to the photoelectric conversion unit can be increased, and the light use efficiency can be increased.
- the first electrolysis electrode and the second electrolysis electrode are provided on the back surface of the photoelectric conversion unit, the light incident on the light receiving surface is generated from the first and second electrolysis electrodes, respectively. It is not absorbed or scattered by the first gas and the second gas. As a result, the amount of incident light to the photoelectric conversion unit can be increased, and the light use efficiency can be increased.
- the seal portion provided on the peripheral portion of the first or second electrolysis electrode is provided so that the electrolyte does not flow between the first or second electrolysis electrode and the photoelectric conversion portion. Therefore, the seal portion can prevent the electrolyte from flowing into the interface between the first or second electrode for electrolysis and the base layer (for example, an insulating portion, an electrode, a conductive portion, etc.).
- the electrolysis electrode can be prevented from peeling from the underlayer, and the durability and reliability of the gas production apparatus can be improved. Moreover, it can prevent that electrolyte solution contacts a photoelectric conversion part via the interface of the electrode for 1st or 2nd electrolysis, and a base layer.
- FIG. 2 is a schematic cross-sectional view of the gas production apparatus taken along a dotted line AA in FIG. It is a schematic back view which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention.
- FIG. 10 is a schematic cross-sectional view of the gas production apparatus taken along one-dot chain line BB in FIG. 9. It is a schematic back view which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention. It is a schematic sectional drawing which shows the structure of the gas manufacturing apparatus of one Embodiment of this invention.
- the gas production apparatus of the present invention includes a photoelectric conversion unit having a light receiving surface and a back surface thereof, a first electrolysis electrode and a second electrolysis electrode provided side by side on the back surface, and a first or second electrolysis electrode.
- a photoelectric conversion unit having a light receiving surface and a back surface thereof, a first electrolysis electrode and a second electrolysis electrode provided side by side on the back surface, and a first or second electrolysis electrode.
- the electrolysis solution is electrolyzed using electromotive force so as to generate a first gas and a second gas, respectively, and the seal portion has corrosion resistance to the electrolyte solution and is used for the first or second electrolysis. It is provided so that electrolyte solution may not flow in between an electrode and the said photoelectric conversion part.
- the photoelectric conversion unit receives light to generate an electromotive force between the light receiving surface and the back surface, and the first electrolysis electrode is electrically connected to the back surface of the photoelectric conversion unit.
- the second electrolysis electrode is provided so as to be electrically connected to the light receiving surface of the photoelectric conversion unit. According to such a structure, the thing of a laminated structure can be utilized for a photoelectric conversion part.
- the gas production apparatus further includes an insulating portion provided between the second electrolysis electrode and the back surface of the photoelectric conversion portion. According to such a configuration, it is possible to prevent a leak current from being generated between the second electrolysis electrode and the back surface of the photoelectric conversion unit.
- the seal portion is provided so that an electrolyte does not flow into an interface between the second electrolysis electrode and the insulating portion. According to such a configuration, it is possible to prevent peeling of the second electrolysis electrode caused by the electrolyte flowing between the second electrolysis electrode and the insulating portion.
- the gas production apparatus further includes a first electrode that contacts the light receiving surface of the photoelectric conversion unit. According to such a configuration, the internal resistance can be reduced.
- the gas manufacturing apparatus of the present invention preferably further includes a first conductive portion that electrically connects the first electrode and the second electrolysis electrode.
- a first conductive portion that electrically connects the first electrode and the second electrolysis electrode.
- the light-receiving surface of a photoelectric conversion part and the 2nd electrode for electrolysis can be electrically connected.
- the first conductive portion is provided in a contact hole that penetrates the photoelectric conversion portion. According to such a configuration, the wiring distance between the light receiving surface of the photoelectric conversion unit and the second electrolysis electrode can be shortened, and the internal resistance can be reduced.
- the insulating portion is provided so as to cover a side surface of the photoelectric conversion portion, and the first conductive portion is a part of the insulating portion and covers a side surface of the photoelectric conversion portion.
- the first conductive portion can be provided with a small number of steps, and the manufacturing cost can be reduced.
- the insulating portion is provided so as to cover a side surface of the photoelectric conversion portion, and the second electrolysis electrode is a part of the insulating portion and covers the side surface of the photoelectric conversion portion. It is preferable that the first electrode is provided on the first electrode and is in contact with the first electrode. According to such a configuration, the first electrode and the second electrolysis electrode can be electrically connected without providing the first conductive portion.
- a second conductive part is further provided between the insulating part and the second electrolysis electrode, and the seal part is provided at an interface between the second electrolysis electrode and the second conductive part. It is preferable that the electrolyte solution is provided so as not to flow in. According to such a configuration, it is possible to prevent the second electrolysis electrode from peeling off due to the electrolyte flowing between the second electrolysis electrode and the second conductive portion.
- the gas production apparatus of the present invention further includes a second electrode provided between the back surface of the photoelectric conversion unit and the first electrolysis electrode and between the back surface of the photoelectric conversion unit and the insulating unit,
- the seal portion is preferably provided so that the electrolyte does not flow into the interface between the first electrolysis electrode and the second electrode. According to such a configuration, it is possible to prevent the first electrolysis electrode from peeling off due to the electrolyte flowing between the first electrolysis electrode and the second electrode.
- the photoelectric conversion unit has a photoelectric conversion layer including a p-type semiconductor layer, an i-type semiconductor layer, and an n-type semiconductor layer. According to such a configuration, an electromotive force can be generated by causing light to enter the photoelectric conversion unit.
- the photoelectric conversion unit receives a light to generate a potential difference between the first and second areas on the back surface of the photoelectric conversion unit, and the first area is electrically connected to the first electrolysis electrode. It is preferable that the second area is provided so as to be electrically connected to the second electrolysis electrode. According to such a configuration, the electromotive force generated between the first area and the second area of the photoelectric conversion unit can be output to the first electrolysis electrode and the second electrolysis electrode.
- the gas production apparatus further includes an insulating portion that is provided on the back surfaces of the first and second electrolysis electrodes and the photoelectric conversion unit and has openings on the first area and the second area. .
- an electromotive force generated when the photoelectric conversion unit receives light can be efficiently generated between the first area and the second area.
- the sealing portion prevents the electrolyte from flowing into an interface between the first electrolysis electrode and the insulating portion or an interface between the second electrolysis electrode and the insulating portion. It is preferable to be provided.
- a third conductive portion provided between the first electrolysis electrode and the insulating portion, and a second conductive portion provided between the second electrolysis electrode and the insulating portion.
- the sealing portion is provided so that the electrolyte does not flow into the interface between the first electrolysis electrode and the third conductive portion or the interface between the second electrolysis electrode and the second conductive portion.
- the first area is provided so as to be electrically connected to the first electrolysis electrode via the third conductive part
- the second area is provided via the second conductive part. It is preferably provided so as to be electrically connected to the electrode for electrolysis. According to such a configuration, it is possible to reduce ohmic loss when the electromotive force generated by the photoelectric conversion unit receiving light is output to the first electrolysis electrode and the second electrolysis electrode.
- the photoelectric conversion part is made of at least one semiconductor material having an n-type semiconductor part and a p-type semiconductor part, and one of the first and second areas is the n-type semiconductor part. It is preferable that the other part is a part of the p-type semiconductor part. According to such a configuration, an electromotive force can be generated between the first and second areas on the back surface of the photoelectric conversion unit when the photoelectric conversion unit receives light.
- a translucent substrate is further provided, and the photoelectric conversion unit is provided on the translucent substrate. According to such a structure, a photoelectric conversion part can be formed on a translucent board
- the photoelectric conversion unit includes a plurality of photoelectric conversion layers connected in series, and the plurality of photoelectric conversion layers generate electromotive force generated by receiving light in the first electrolysis electrode and the second electrolysis. It is preferable that it is provided so as to be supplied to the electrode. According to such a configuration, a high voltage electromotive force can be easily output to the first and second electrolysis electrodes.
- each photoelectric conversion layer is preferably connected in series by a fourth conductive portion. According to such a configuration, the photoelectric conversion layers can be provided side by side.
- the fourth conductive portion may include a translucent electrode provided on the light receiving surface side of the photoelectric conversion layer and a back electrode provided on the back surface side of the photoelectric conversion layer.
- the photoelectric conversion layers can be provided side by side.
- one of the first electrolysis electrode and the second electrolysis electrode is a hydrogen generation unit that generates H 2 from the electrolytic solution, and the other is oxygen generation that generates O 2 from the electrolytic solution.
- the hydrogen generation part and the oxygen generation part are respectively a hydrogen generation catalyst that is a catalyst for the reaction that generates H 2 from the electrolytic solution and an oxygen generation catalyst that is a catalyst for the reaction that generates O 2 from the electrolytic solution. It is preferable to include. According to such a configuration, hydrogen serving as a fuel for the fuel cell can be produced.
- At least one of the hydrogen generation unit and the oxygen generation unit has a catalyst surface area larger than an area of the light receiving surface. According to such a configuration, hydrogen and oxygen can be produced more efficiently.
- at least one of the hydrogen generation part and the oxygen generation part is a porous conductor carrying a catalyst. According to such a configuration, the catalyst area of the reaction in which hydrogen or oxygen is generated can be increased.
- the hydrogen generation catalyst preferably contains at least one of Pt, Ir, Ru, Pd, Rh, Au, Fe, Ni, and Se. According to such a configuration, hydrogen can be efficiently generated from the electrolytic solution.
- the oxygen generation catalyst contains at least one of Mn, Ca, Zn, Co, and Ir. According to such a configuration, oxygen can be efficiently generated from the electrolytic solution.
- the gas manufacturing apparatus of the present invention further includes a light-transmitting substrate and an electrolyte chamber, and the photoelectric conversion unit is provided on the light-transmitting substrate, and includes a first electrolysis electrode and a second electrolysis electrode. It is preferable that a top plate is further provided, and the electrolytic solution chamber is provided between the first electrolysis electrode and the second electrolysis electrode and the top plate. According to such a configuration, the surface of the first electrolysis electrode that can contact the electrolyte solution and the surface of the second electrolysis electrode that can contact the electrolyte solution can be provided facing the electrolyte chamber, The first and second electrodes for electrolysis can be brought into contact with the electrolytic solution.
- the gas production apparatus further includes a partition partitioning the electrolyte chamber between the first electrolysis electrode and the top plate and the electrolyte chamber between the second electrolysis electrode and the top plate. . According to such a configuration, the first gas and the second gas can be separated by the partition wall.
- the partition preferably includes an ion exchanger. According to such a structure, the imbalance of the ion concentration which arises in electrolyte solution can be eliminated easily.
- the partition wall is a part of the seal portion. According to such a structure, a partition and a seal
- the present invention provides the gas production apparatus of the present invention so that the light receiving surface of the photoelectric conversion unit is inclined with respect to a horizontal plane, introduces an electrolyte into the gas production apparatus from the lower part of the gas production apparatus, By making light incident on the light receiving surface of the photoelectric conversion unit, a first gas and a second gas are generated from the first electrolysis electrode and the second electrolysis electrode, respectively.
- a gas production method for discharging two gases is also provided. According to the gas production method of the present invention, the first gas and the second gas can be produced by making light incident on the light receiving surface of the photoelectric conversion unit.
- Diagram 1 of a gas producing device is a schematic plan view showing the configuration of a gas producing device according to an embodiment of the present invention.
- FIG. 2 is a schematic cross-sectional view of the gas production apparatus taken along the dotted line AA in FIG.
- FIG. 3 is a schematic back view showing the configuration of the gas production apparatus according to one embodiment of the present invention.
- 4 to 8 are schematic cross-sectional views showing the configuration of the gas production apparatus according to one embodiment of the present invention, and correspond to the schematic cross-sectional view of the gas production apparatus taken along the dotted line AA in FIG.
- FIG. 9 is a schematic plan view showing the configuration of the gas production apparatus according to one embodiment of the present invention.
- FIG. 10 is a schematic cross-sectional view of the gas production apparatus taken along dotted line BB in FIG.
- FIG. 11 is a schematic back view showing the configuration of the gas production apparatus according to one embodiment of the present invention.
- 12 and 13 are schematic cross-sectional views showing the configuration of the gas production apparatus according to one embodiment of the present invention, and correspond to the schematic cross-sectional view of the gas production apparatus taken along the dotted line BB in FIG.
- the gas production apparatus 23 of the present embodiment includes a photoelectric conversion unit 2 having a light receiving surface and a back surface thereof, a first electrolysis electrode 8 and a second electrolysis electrode 7 provided side by side on the back surface, And a seal portion 9 provided on the periphery of the second electrolysis electrodes 8 and 7, and when the first and second electrolysis electrodes 8 and 7 are in contact with the electrolytic solution, the first and second electrolysis electrodes 8 and 7 are provided so as to electrolyze the electrolytic solution by using an electromotive force generated by the photoelectric conversion unit 2 receiving light to generate a first gas and a second gas, respectively. And is provided so that the electrolytic solution does not flow between the first or second electrolysis electrodes 8 and 7 and the photoelectric conversion unit 2.
- the gas manufacturing apparatus 23 of the present embodiment may include the translucent substrate 1.
- the gas production apparatus 23 of the present embodiment will be described.
- the translucent substrate 1 may be provided in the gas manufacturing apparatus 23 of the present embodiment. Moreover, the photoelectric conversion part 2 may be provided on the translucent board
- substrate 1 is a member used as the foundation for comprising this gas manufacturing apparatus.
- a substrate material having a high light transmittance for example, a transparent rigid material such as soda glass, quartz glass, Pyrex (registered trademark), or a synthetic quartz plate, or a transparent resin plate or film material is preferably used. In view of chemical and physical stability, it is preferable to use a glass substrate.
- a fine uneven structure can be formed so that incident light is effectively irregularly reflected on the surface of the photoelectric conversion unit 2.
- This fine concavo-convex structure can be formed by a known method such as reactive ion etching (RIE) treatment or blast treatment.
- the first electrode 4 can be provided on the translucent substrate 1 and can be provided in contact with the light receiving surface of the photoelectric conversion part 2. Moreover, the 1st electrode 4 may have translucency. Moreover, the 1st electrode 4 may be directly provided in the light-receiving surface of the photoelectric conversion part 2, when the translucent board
- the first electrode 4 can be electrically connected to the second electrolysis electrode 7. By providing the first electrode 4, the current flowing between the light receiving surface of the photoelectric conversion unit 2 and the second electrolysis electrode 7 can be increased. Further, when the photoelectric conversion unit 2 generates an electromotive force between the first area and the second area on the back surface of the photoelectric conversion unit 2 as shown in FIGS.
- the first electrode 4 may be electrically connected to the second electrolysis electrode 7 through the first conductive portion 10 as shown in FIGS. 2, 4, and 12, and the second electrode as shown in FIGS. You may contact with the electrode 7 for electrolysis.
- the first electrode 4 may be made of a transparent conductive film such as ITO or SnO 2, or may be made of a metal finger electrode such as Ag or Au.
- the transparent conductive film is used to facilitate contact between the light receiving surface of the photoelectric conversion unit 2 and the second electrolysis electrode 7. What is generally used as a transparent electrode can be used. Specifically, In—Zn—O (IZO), In—Sn—O (ITO), ZnO—Al, Zn—Sn—O, SnO 2 and the like can be given.
- the transparent conductive film preferably has a sunlight transmittance of 85% or more, particularly 90% or more, and particularly 92% or more. This is because the photoelectric conversion unit 2 can absorb light efficiently.
- a known method can be used, and examples thereof include sputtering, vacuum deposition, sol-gel method, cluster beam deposition method, and PLD (Pulse Laser Deposition) method.
- the first conductive portion 10 can be provided so as to be in contact with the first electrode 4 and the second electrolysis electrode 7.
- the first electrode 4 and the second electrolysis electrode 7 in contact with the light receiving surface of the photoelectric conversion portion 2 can be easily electrically connected.
- the 1st electroconductive part 10 may be provided in the contact hole which penetrates the photoelectric conversion part 2 like FIG.
- the contact hole provided with the 1st electroconductive part 10 may have one or more, and may have a circular cross section.
- the 1st electroconductive part 10 may be provided so that the side surface of the photoelectric conversion part 2 may be covered like FIG.
- the material of the first conductive portion 10 is not particularly limited as long as it has conductivity.
- a paste containing conductive particles for example, a carbon paste, an Ag paste or the like applied by screen printing, an inkjet method, etc., dried or baked, a method of forming a film by a CVD method using a raw material gas, a PVD method, Examples thereof include a vapor deposition method, a sputtering method, a sol-gel method, and a method using an electrochemical redox reaction.
- the photoelectric conversion unit 2 has a light receiving surface and a back surface thereof, and a first electrolysis electrode 8 and a second electrolysis electrode 7 are provided on the back surface of the photoelectric conversion unit 2.
- the light receiving surface is a surface that receives light for photoelectric conversion
- the back surface is the back surface of the light receiving surface.
- the photoelectric conversion part 2 can be provided on the translucent substrate 1 provided with the first electrode 4 with the light receiving surface facing down.
- the photoelectric conversion unit 2 may be one in which an electromotive force is generated between the light receiving surface and the back surface as shown in FIGS. An electromotive force may be generated between the first area and the second area on the back surface of the converter 2.
- the photoelectric conversion part 2 can be formed by a semiconductor substrate on which the n-type semiconductor region 37 and the p-type semiconductor region 36 are formed.
- the shape of the photoelectric conversion part 2 is not specifically limited, For example, it can be set as a square shape.
- the photoelectric conversion unit 2 is not particularly limited as long as it can separate charges by incident light and generates an electromotive force.
- the photoelectric conversion unit using a silicon-based semiconductor or the photoelectric conversion unit using a compound semiconductor A photoelectric conversion part using a dye sensitizer, a photoelectric conversion part using an organic thin film, and the like.
- the photoelectric conversion unit 2 receives light in the first electrolysis electrode 8 and the second electrolysis electrode 7. It is necessary to use a material that generates an electromotive force necessary for generating hydrogen and oxygen.
- the potential difference between the first electrolysis electrode 8 and the second electrolysis electrode 7 needs to be larger than the theoretical voltage (1.23 V) for water decomposition, and for this purpose, a sufficiently large potential difference needs to be generated in the photoelectric conversion unit 2.
- the photoelectric conversion unit 2 connects two or more junctions in series such as a pn junction to generate an electromotive force.
- it can have a structure in which the photoelectric conversion layers provided side by side as shown in FIGS.
- Examples of materials that perform photoelectric conversion include silicon-based semiconductors, compound semiconductors, and materials based on organic materials, and any photoelectric conversion material can be used.
- these photoelectric conversion materials can be stacked. In the case of stacking, it is possible to form a multi-junction structure with the same material, but stacking multiple photoelectric conversion layers with different optical band gaps and complementing the low sensitivity wavelength region of each photoelectric conversion layer mutually By doing so, incident light can be efficiently absorbed over a wide wavelength region.
- the plurality of photoelectric conversion layers preferably have different band gaps. According to such a configuration, the electromotive force generated in the photoelectric conversion unit 2 can be increased, and the electrolytic solution can be electrolyzed more efficiently.
- the photoelectric conversion unit 2 may be a combination of these.
- the example of the following photoelectric conversion parts 2 can also be made into a photoelectric converting layer.
- Photoelectric conversion part using a silicon-based semiconductor examples include a single crystal type, a polycrystalline type, an amorphous type, a spherical silicon type, and combinations thereof. Any of them can have a pn junction in which a p-type semiconductor and an n-type semiconductor are joined. Further, a pin junction in which an i-type semiconductor is provided between a p-type semiconductor and an n-type semiconductor may be provided. Further, it may have a plurality of pn junctions, a plurality of pin junctions, or a pn junction and a pin junction.
- the silicon-based semiconductor is a semiconductor containing silicon, such as silicon, silicon carbide, or silicon germanium.
- the photoelectric conversion unit 2 using a silicon-based semiconductor may be a thin film or a thick photoelectric conversion layer formed on the translucent substrate 1, or a pn junction or a wafer such as a silicon wafer.
- a pin junction may be formed, or a thin film photoelectric conversion layer may be formed on a wafer having a pn junction or a pin junction.
- a first conductivity type semiconductor layer is formed on the first electrode 4 laminated on the translucent substrate 1 by a method such as a plasma CVD method.
- a method such as a plasma CVD method.
- As the first conductive type semiconductor layer a p + type or n + type amorphous Si thin film doped with a conductivity type determining impurity atom concentration of about 1 ⁇ 10 18 to 5 ⁇ 10 21 / cm 3 , A crystalline or microcrystalline Si thin film is used.
- the material of the first conductivity type semiconductor layer is not limited to Si, and it is also possible to use a compound such as SiC, SiGe, or Si x O 1-x .
- a polycrystalline or microcrystalline crystalline Si thin film is formed as a crystalline Si photoactive layer by a method such as plasma CVD.
- the conductivity type is the first conductivity type having a lower doping concentration than the first conductivity type semiconductor, or the i conductivity type.
- the material for the crystalline Si-based photoactive layer is not limited to Si, and it is also possible to use a compound such as SiC, SiGe, or Si x O 1-x .
- a second conductivity type semiconductor layer having a conductivity type opposite to the first conductivity type semiconductor layer is formed by a method such as plasma CVD.
- a method such as plasma CVD.
- the material of the second conductivity type semiconductor layer is not limited to Si, and it is also possible to use a compound such as SiC, SiGe, or Si x O 1-x .
- the second photoelectric conversion layer includes a first conductive semiconductor layer, a crystalline Si-based photoactive layer, and a second conductive semiconductor layer, and each layer corresponds to the first photoelectric conversion layer.
- the first conductive type semiconductor layer, the crystalline Si-based photoactive layer, and the second conductive type semiconductor layer are formed.
- the volume crystallization fraction of the crystalline Si photoactive layer of the second photoelectric conversion layer is preferably higher than that of the first crystalline Si photoactive layer.
- the volume crystallization fraction is preferably increased as compared with the lower layer.
- the silicon substrate a single crystal silicon substrate, a polycrystalline silicon substrate, or the like can be used, and may be p-type, n-type, or i-type.
- An n-type semiconductor portion 37 is formed by doping an n-type impurity such as P into a part of the silicon substrate by thermal diffusion or ion implantation, and a p-type impurity such as B is heated on the other part of the silicon substrate.
- the p-type semiconductor portion 36 can be formed by doping by diffusion or ion implantation.
- pn junction in the silicon substrate, pin junction can be formed and npp + junction or pnn + junction, it is possible to form a photoelectric conversion unit 2.
- Each of the n-type semiconductor portion 37 and the p-type semiconductor portion 36 can form one region on the silicon substrate as shown in FIGS. 7 and 8, and the n-type semiconductor region 37 and the p-type semiconductor region 36 as shown in FIG. A plurality of either of them can be formed. Further, as shown in FIG. 8, the photoelectric conversion unit 2 can be formed by arranging the silicon substrates on which the n-type semiconductor region 37 and the p-type semiconductor region 36 are arranged side by side and connecting them in series by the fourth conductive unit 33. Note that, although described with reference to a silicon substrate, pn junction, pin junction, may use other semiconductor substrate or the like can be formed npp + junction or pnn + junction. Further, as long as the n-type semiconductor portion 37 and the p-type semiconductor portion 36 can be formed, the semiconductor layer is not limited to the semiconductor substrate, and may be a semiconductor layer formed on the substrate.
- Photoelectric conversion part using a compound semiconductor is, for example, GaP, GaAs, InP, InAs, or IId-VI elements composed of group III-V elements, CdTe / CdS, Examples thereof include those in which a pn junction is formed using CIGS (Copper Indium Gallium DiSelenide) composed of the I-III-VI group.
- CIGS Copper Indium Gallium DiSelenide
- a method for manufacturing a photoelectric conversion unit using a compound semiconductor is shown below.
- MOCVD metal organic chemical vapor deposition
- a group III element material for example, an organic metal such as trimethylgallium, trimethylaluminum, or trimethylindium is supplied to the growth apparatus using hydrogen as a carrier gas.
- a gas such as arsine (AsH 3 ), phosphine (PH 3 ), and stibine (SbH 3 ) is used as the material of the group V element.
- a dopant of p-type impurities or n-type impurities for example, diethyl zinc for p-type conversion, monosilane (SiH 4 ), disilane (Si 2 H 6 ), hydrogen selenide (H 2 Se) for n-type conversion, for example. Etc. are used.
- These source gases can be thermally decomposed by supplying them onto a substrate heated to, for example, 700 ° C., and a desired compound semiconductor material film can be epitaxially grown.
- the composition of these growth layers can be controlled by the gas composition to be introduced, and the film thickness can be controlled by the gas introduction time.
- a known window layer on the light receiving surface side or a known electric field layer on the non-light receiving surface side may be provided to improve carrier collection efficiency.
- a buffer layer for preventing diffusion of impurities may be provided.
- the photoelectric conversion part using a dye sensitizer is mainly composed of, for example, a porous semiconductor, a dye sensitizer, an electrolyte, a solvent, and the like.
- a material constituting the porous semiconductor for example, one or more kinds of known semiconductors such as titanium oxide, tungsten oxide, zinc oxide, barium titanate, strontium titanate, cadmium sulfide can be selected.
- a paste containing semiconductor particles is applied by a screen printing method, an ink jet method and the like, dried or baked, a method of forming a film by a CVD method using a raw material gas, etc. , PVD method, vapor deposition method, sputtering method, sol-gel method, method using electrochemical oxidation-reduction reaction, and the like.
- the dye sensitizer adsorbed on the porous semiconductor various dyes having absorption in the visible light region and the infrared light region can be used.
- the carboxylic acid group, carboxylic anhydride group, alkoxy group, sulfonic acid group, hydroxyl group, hydroxylalkyl group, ester group, mercapto group, phosphonyl in the dye molecule It is preferable that a group or the like is present.
- These functional groups provide an electrical bond that facilitates electron transfer between the excited state dye and the conduction band of the porous semiconductor.
- dyes containing these functional groups include ruthenium bipyridine dyes, quinone dyes, quinone imine dyes, azo dyes, quinacridone dyes, squarylium dyes, cyanine dyes, merocyanine dyes, and triphenylmethane dyes.
- ruthenium bipyridine dyes quinone dyes, quinone imine dyes, azo dyes, quinacridone dyes, squarylium dyes, cyanine dyes, merocyanine dyes, and triphenylmethane dyes.
- Xanthene dyes porphyrin dyes, phthalocyanine dyes, berylene dyes, indigo dyes, naphthalocyanine dyes, and the like.
- Examples of the method of adsorbing the dye to the porous semiconductor include a method of immersing the porous semiconductor in a solution in which the dye is dissolved (dye adsorption solution).
- the solvent used in the dye adsorption solution is not particularly limited as long as it dissolves the dye, and specifically, alcohols such as ethanol and methanol, ketones such as acetone, ethers such as diethyl ether and tetrahydrofuran.
- Nitrogen compounds such as acetonitrile, aliphatic hydrocarbons such as hexane, aromatic hydrocarbons such as benzene, esters such as ethyl acetate, water, and the like.
- the electrolyte is composed of a redox pair and a solid medium such as a liquid or polymer gel holding the redox pair.
- a redox pair iron- and cobalt-based metals and halogen substances such as chlorine, bromine, and iodine are preferably used as the redox pair, and metal iodides such as lithium iodide, sodium iodide, and potassium iodide and iodine are used.
- the combination of is preferably used.
- imidazole salts such as dimethylpropylimidazole iodide can also be mixed.
- the solvent examples include carbonate compounds such as propylene carbonate, nitrile compounds such as acetonitrile, alcohols such as ethanol and methanol, water, aprotic polar substances, and the like. Of these, carbonate compounds and nitrile compounds are preferred. Used.
- Photoelectric conversion part using organic thin film Photoelectric conversion part 2 using an organic thin film is an electron hole transport layer composed of an organic semiconductor material having electron donating properties and electron accepting properties, or an electron transport layer having electron accepting properties. And a hole transport layer having an electron donating property may be laminated.
- the electron-donating organic semiconductor material is not particularly limited as long as it has a function as an electron donor, but it is preferable that a film can be formed by a coating method, and among them, an electron-donating conductive polymer is preferably used.
- the conductive polymer refers to a ⁇ -conjugated polymer, which is composed of a ⁇ -conjugated system in which double bonds or triple bonds containing carbon-carbon or hetero atoms are alternately connected to single bonds, and exhibits semiconducting properties. Point.
- Examples of the electron-donating conductive polymer material include polyphenylene, polyphenylene vinylene, polythiophene, polycarbazole, polyvinyl carbazole, polysilane, polyacetylene, polypyrrole, polyaniline, polyfluorene, polyvinyl pyrene, polyvinyl anthracene, and derivatives, Examples thereof include a polymer, a phthalocyanine-containing polymer, a carbazole-containing polymer, and an organometallic polymer.
- thiophene-fluorene copolymer polyalkylthiophene, phenylene ethynylene-phenylene vinylene copolymer, fluorene-phenylene vinylene copolymer, thiophene-phenylene vinylene copolymer and the like are preferably used.
- the electron-accepting organic semiconductor material is not particularly limited as long as it has a function as an electron acceptor. However, it is preferable that a film can be formed by a coating method, and among them, an electron-donating conductive polymer is preferably used.
- the electron-accepting conductive polymer include polyphenylene vinylene, polyfluorene, and derivatives and copolymers thereof, or carbon nanotubes, fullerene and derivatives thereof, CN group or CF 3 group-containing polymers, and —CF Examples thereof include 3- substituted polymers.
- an electron-accepting organic semiconductor material doped with an electron-donating compound an electron-donating organic semiconductor material doped with an electron-accepting compound, or the like can be used.
- the electron-accepting conductive polymer material doped with the electron-donating compound include the above-described electron-accepting conductive polymer material.
- a Lewis base such as an alkali metal such as Li, K, Ca, or Cs or an alkaline earth metal can be used. The Lewis base acts as an electron donor.
- the electron-donating conductive polymer material doped with the electron-accepting compound include the above-described electron-donating conductive polymer material.
- a Lewis acid such as FeCl 3 , AlCl 3 , AlBr 3 , AsF 6 or a halogen compound can be used.
- Lewis acid acts as an electron acceptor.
- photoelectric conversion unit 2 In the photoelectric conversion unit 2 shown above, it is assumed that sunlight is received and photoelectric conversion is primarily performed. However, it is emitted from a fluorescent lamp, an incandescent lamp, an LED, or a specific heat source depending on the application. It is also possible to perform photoelectric conversion by irradiating artificial light such as light.
- the second electrode 5 can be provided between the back surface of the photoelectric conversion unit 2 and the first electrolysis electrode 8 and between the back surface of the photoelectric conversion unit 2 and the insulating unit 11.
- the second electrode 5 can be electrically connected to the first electrolysis electrode 8.
- the second electrode 5 may be in contact with the first electrolysis electrode 8.
- the 2nd electrode 5 has the corrosion resistance with respect to electrolyte solution, and the liquid shielding property with respect to electrolyte solution. Thereby, corrosion of the photoelectric conversion part 2 by electrolyte solution can be prevented.
- the 2nd electrode 5 has electroconductivity
- it is a metal thin film
- a transparent conductive film such as In—Zn—O (IZO), In—Sn—O (ITO), ZnO—Al, Zn—Sn—O, and SnO 2 is used.
- Insulating part The insulating part 11 can be provided in order to prevent the occurrence of leakage current.
- the insulating part 11 can be provided on the side wall of the contact hole.
- the insulating portion 11 can be provided between the second electrolysis electrode 7 and the back surface of the photoelectric conversion portion 2 as shown in FIGS. 2, 4 to 6, 10, and 12, for example. This can prevent a leak current from being generated between the second electrolysis electrode 7 and the back surface of the photoelectric conversion unit 2.
- the photoelectric conversion unit 2 receives light as shown in FIGS.
- the insulating unit 11 is , Between the first electrolysis electrode 8 and the back surface of the photoelectric conversion unit 2, and between the second electrolysis electrode 7 and the back surface of the photoelectric conversion unit 2. There may be openings on the two zones. Thereby, the electrons and holes formed by the photoelectric conversion unit 2 receiving light can be efficiently separated, and the photoelectric conversion efficiency can be further increased. Moreover, it is preferable that the insulation part 11 has the corrosion resistance with respect to electrolyte solution, and the liquid shielding property with respect to electrolyte solution. Thereby, generation
- the insulating part 11 can be used regardless of an organic material or an inorganic material.
- organic polymers and inorganic materials include metal oxides such as Al 2 O 3 , SiO 2 such as porous silica films, fluorine-added silicon oxide films (FSG), SiOC, HSQ (Hydrogen Silsesquioxane) films, SiN x , It is possible to use a method of forming a film by dissolving silanol (Si (OH) 4 ) in a solvent such as alcohol and applying and heating.
- a film containing a paste containing an insulating material is applied by a screen printing method, an ink jet method, a spin coating method, etc., dried or baked, or a CVD method using a source gas is used. And a method using a PVD method, a vapor deposition method, a sputtering method, a sol-gel method, and the like.
- the second conductive portion and the third conductive portion The second conductive portion 24 can be provided between the insulating portion 11 and the second electrolysis electrode 7, and the third conductive portion 25 is the insulating portion 11 and the first electrolysis portion It can be provided between the electrodes 8.
- the second conductive portion 24 or the third conductive portion 25 can be provided as shown in FIGS.
- the second conductive portion 24 or the third conductive portion 25 preferably has corrosion resistance to the electrolytic solution and liquid shielding properties to the electrolytic solution.
- the second conductive portion 24 or the third conductive portion 25 is not particularly limited as long as it has conductivity.
- the second conductive portion 24 or the third conductive portion 25 is a metal thin film, and is a thin film such as Al, Ag, or Au. These can be formed by, for example, sputtering. Further, for example, a transparent conductive film such as In—Zn—O (IZO), In—Sn—O (ITO), ZnO—Al, Zn—Sn—O, and SnO 2 is used.
- the first electrolysis electrode 8 and the second electrolysis electrode 7 are respectively provided on the back surface of the photoelectric conversion unit 2. Moreover, the electrode 8 for 1st electrolysis and the electrode 7 for 2nd electrolysis can each have the surface which is the back surface side of the photoelectric conversion part 2, and the back surface which can contact electrolyte solution. Thus, the first electrolysis electrode 8 and the second electrolysis electrode 7 do not block light incident on the photoelectric conversion unit 2. In addition, when the first electrolysis electrode 8 and the second electrolysis electrode 7 are in contact with the electrolytic solution, the electrolysis solution is electrolyzed by using the electromotive force generated by the photoelectric conversion unit 2 receiving light, and the first gas is obtained. And a second gas is generated.
- the first electrolysis electrode 8 is photoelectrically converted as shown in FIGS.
- the second electrolysis electrode 7 can be electrically connected to the light receiving surface of the photoelectric conversion unit 2.
- the first electrolysis electrode 8 is in the first area as shown in FIGS.
- the second electrolysis electrode 7 can be electrically connected to the other of the first area and the second area.
- At least one of the first electrolysis electrode 8 and the second electrolysis electrode 7 has a plurality of surfaces, each of which has a surface that can contact the strip-shaped electrolyte solution, and the long sides of the surfaces are adjacent to each other. It may be provided alternately.
- the first electrolysis electrode 8 and the second electrolysis electrode 7 can be provided as shown in FIGS. In this way, by providing the first electrolysis electrode 8 and the second electrolysis electrode 7, the distance between the portion where the reaction generating the first gas occurs and the portion where the reaction generating the second gas occurs is increased. It can be shortened, and the ion concentration imbalance generated in the electrolyte can be reduced.
- the 1st gas and 2nd gas can be collect
- the first electrolysis electrode 8 and the second electrolysis electrode 7 preferably have corrosion resistance to the electrolytic solution and liquid shielding properties to the electrolytic solution. Thereby, the first gas and the second gas can be stably generated, and corrosion of the photoelectric conversion unit 2 due to the electrolytic solution can be prevented.
- a metal plate or a metal film having corrosion resistance against the electrolytic solution can be used for the first electrolysis electrode 8 and the second electrolysis electrode 7.
- At least one of the first electrolysis electrode 8 and the second electrolysis electrode 7 has a catalyst surface area larger than the area of the light receiving surface of the photoelectric conversion unit 2. According to such a configuration, the first gas or the second gas can be generated more efficiently by the electromotive force generated in the photoelectric conversion unit 2.
- at least one of the first electrolysis electrode 8 and the second electrolysis electrode 7 is preferably a porous conductor carrying a catalyst. According to such a configuration, the surface area of at least one of the first electrolysis electrode 8 and the second electrolysis electrode 7 can be increased, and the first gas or the second gas can be generated more efficiently. Can do.
- the first electrolysis electrode 8 or the second electrolysis electrode 7 can also have a two-layer structure of a portion having a liquid shielding property against the electrolytic solution and a porous portion.
- One of the first electrolysis electrode 8 and the second electrolysis electrode 7 may be a hydrogen generation unit, and the other may be an oxygen generation unit.
- one of the first gas and the second gas is hydrogen, and the other is oxygen.
- the hydrogen generating part is a part for generating H 2 from the electrolytic solution, and is one of the first electrolysis electrode 8 and the second electrolysis electrode 7.
- the hydrogen generation unit may include a catalyst for a reaction in which H 2 is generated from the electrolytic solution. Thereby, the reaction rate of the reaction in which H 2 is generated from the electrolytic solution can be increased.
- the hydrogen generation part may consist only of a catalyst for the reaction in which H 2 is generated from the electrolytic solution, or this catalyst may be supported on a support. Further, the hydrogen generation unit may have a catalyst surface area larger than the area of the light receiving surface of the photoelectric conversion unit 2. Thereby, the reaction in which H 2 is generated from the electrolytic solution can be set to a faster reaction rate.
- the hydrogen generation part may be a porous conductor carrying a catalyst. This can increase the catalyst surface area. In addition, a change in potential due to a current flowing between the light receiving surface or the back surface of the photoelectric conversion unit 2 and the catalyst included in the hydrogen generation unit can be suppressed. Furthermore, the hydrogen generation unit may include a hydrogen generation catalyst, and the hydrogen generation catalyst may include at least one of Pt, Ir, Ru, Pd, Rh, Au, Fe, Ni, and Se. According to such a configuration, hydrogen can be generated at a higher reaction rate by the electromotive force generated in the photoelectric conversion unit 2.
- the catalyst for the reaction of generating H 2 from the electrolyte is a catalyst that promotes the conversion of two protons and two electrons into one molecule of hydrogen, is chemically stable, and generates hydrogen overvoltage.
- platinum group metals such as Pt, Ir, Ru, Pd, Rh, and Au, which have catalytic activity for hydrogen, and alloys or compounds thereof, Fe, Ni, and Se that constitute the active center of hydrogenase that is a hydrogen-producing enzyme.
- An alloy or a compound, a combination thereof, or the like can be preferably used.
- a nanostructure containing Pt and Pt has a small hydrogen generation overvoltage and can be suitably used.
- Materials such as CdS, CdSe, ZnS, and ZrO 2 whose hydrogen generation reaction is confirmed by light irradiation can also be used.
- the hydrogen generating catalyst can be supported on the conductor.
- the conductor carrying the catalyst include metal materials, carbonaceous materials, and conductive inorganic materials.
- the metal material a material having electronic conductivity and resistance to corrosion in an acidic atmosphere is preferable.
- noble metals such as Au, Pt, Pd, metals such as Ti, Ta, W, Nb, Ni, Al, Cr, Ag, Cu, Zn, Su, Si, and nitrides and carbides of these metals
- Examples of the alloy include stainless steel, Cu—Cr, Ni—Cr, and Ti—Pt.
- the metal material contains at least one element selected from the group consisting of Pt, Ti, Au, Ag, Cu, Ni, and W from the viewpoint that there are few other chemical side reactions.
- These metal materials have a relatively small electric resistance, and can suppress a decrease in voltage even when a current is extracted in the surface direction.
- a metal material having poor corrosion resistance in an acidic atmosphere such as Cu, Ag, Zn, etc.
- noble metals and metals having corrosion resistance such as Au, Pt, Pd, carbon, graphite, glassy carbon
- a metal surface having poor corrosion resistance may be coated with a conductive polymer, a conductive nitride, a conductive carbide, a conductive oxide, or the like.
- the carbonaceous material a chemically stable and conductive material is preferable.
- examples thereof include carbon powders and carbon fibers such as acetylene black, vulcan, ketjen black, furnace black, VGCF, carbon nanotube, carbon nanohorn, and fullerene.
- Examples of the inorganic material having conductivity include In—Zn—O (IZO), In—Sn—O (ITO), ZnO—Al, Zn—Sn—O, SnO 2 , and antimony oxide-doped tin oxide. .
- examples of the conductive polymer include polyacetylene, polythiophene, polyaniline, polypyrrole, polyparaphenylene, polyparaphenylene vinylene, and the like
- examples of the conductive nitride include carbon nitride, silicon nitride, gallium nitride, indium nitride, and nitride. Germanium, titanium nitride, zirconium nitride, thallium nitride, etc.
- conductive carbides include tantalum carbide, silicon carbide, zirconium carbide, titanium carbide, molybdenum carbide, niobium carbide, iron carbide, nickel carbide, hafnium carbide, tungsten carbide. , Vanadium carbide, chromium carbide, and the like.
- conductive oxide include tin oxide, indium tin oxide (ITO), and antimony oxide-doped tin oxide.
- the structure of the conductor supporting the hydrogen generation catalyst includes a plate shape, a foil shape, a rod shape, a mesh shape, a lath plate shape, a porous plate shape, a porous rod shape, a woven fabric shape, a nonwoven fabric shape, a fiber shape, and a felt shape. It can be used suitably. Further, a grooved conductor in which the surface of the felt-like electrode is pressure-bonded in a groove shape is preferable because the electric resistance and the flow resistance of the electrode liquid can be reduced.
- the oxygen generating portion is a portion that generates O 2 from the electrolytic solution, and is one of the first electrolysis electrode 8 and the second electrolysis electrode 7.
- the oxygen generation unit may include a catalyst for a reaction in which O 2 is generated from the electrolytic solution. Thereby, the reaction rate of the reaction in which O 2 is generated from the electrolytic solution can be increased.
- the oxygen generation part may consist only of a catalyst for the reaction that generates O 2 from the electrolytic solution, or the catalyst may be supported on a carrier.
- the oxygen generation unit may have a catalyst surface area larger than the area of the light receiving surface of the photoelectric conversion unit 2. Thereby, the reaction in which O 2 is generated from the electrolytic solution can be set to a faster reaction rate.
- the oxygen generation part may be a porous conductor carrying a catalyst. This can increase the catalyst surface area. In addition, a change in potential due to a current flowing between the light receiving surface or the back surface of the photoelectric conversion unit 2 and the catalyst included in the oxygen generation unit can be suppressed. Furthermore, the oxygen generation unit may include an oxygen generation catalyst, and the oxygen generation catalyst may include at least one of Mn, Ca, Zn, Co, and Ir. According to such a configuration, oxygen can be generated at a higher reaction rate by the electromotive force generated in the photoelectric conversion unit.
- the catalyst for the reaction of generating O 2 from the electrolyte is a catalyst that promotes the conversion of two water molecules into one molecule of oxygen, four protons, and four electrons, and is chemically stable.
- a material having a small oxygen generation overvoltage can be used.
- oxides or compounds containing Mn, Ca, Zn, Co, which are active centers of Photosystem II, which is an enzyme that catalyzes the reaction of generating oxygen from water using light and platinum such as Pt, RuO 2 , IrO 2
- compounds containing group metals, oxides or compounds containing transition metals such as Ti, Zr, Nb, Ta, W, Ce, Fe, Ni, and combinations of the above materials.
- iridium oxide, manganese oxide, cobalt oxide, and cobalt phosphate can be suitably used because they have low overvoltage and high oxygen generation efficiency.
- the oxygen generating catalyst can be supported on the conductor.
- the conductor carrying the catalyst include metal materials, carbonaceous materials, and conductive inorganic materials. These explanations apply as long as there is no contradiction in the explanation of the hydrogen generation catalyst described in “8. Hydrogen generation part”.
- a promoter can be used. Examples thereof include oxides or compounds of Ni, Cr, Rh, Mo, Co, and Se.
- the method for supporting the hydrogen generating catalyst and the oxygen generating catalyst can be applied directly to a conductor or semiconductor, PVD methods such as vacuum deposition, sputtering, and ion plating, dry coating methods such as CVD,
- the method can be appropriately changed depending on the material such as an analysis method.
- a conductive material can be appropriately supported between the photoelectric conversion unit and the catalyst.
- the reaction surface area is increased by supporting it on porous materials such as metals and carbon, fibrous materials, nanoparticles, etc., and the hydrogen and oxygen generation rates are improved. It is possible to make it.
- the seal part 9 is provided on the peripheral part of the first electrolysis electrode 8 or on the peripheral part of the second electrolysis electrode 7.
- the seal portion 9 has corrosion resistance and liquid shielding properties against the electrolytic solution, and is provided so that the electrolytic solution does not flow between the first or second electrolysis electrode and the photoelectric conversion portion.
- the seal portion 9 can be provided on the peripheral portion of the first electrolysis electrode 8 and on the peripheral portion of the second electrolysis electrode 7 as shown in FIGS. As shown in FIGS. 3 and 11, the first electrolysis electrode 8 and the second electrolysis electrode 7 can be surrounded.
- the seal part 9 can prevent the photoelectric conversion part 2 from coming into contact with the electrolytic solution.
- the seal portion 9 causes the electrolyte to flow at the interface between the first or second electrolysis electrode and the base layer (for example, the insulating portion 11, the second electrode 5, the second conductive portion 24, the third conductive portion 25, etc.). Inflow can be prevented. As a result, the electrolysis electrode can be prevented from peeling from the underlayer, and the durability and reliability of the gas production apparatus can be improved.
- sticker part 9 can also be provided so that the side surface of the electrode 8 for 1st electrolysis or the electrode 7 for 2nd electrolysis may be covered like FIG.
- the seal portion 9 is formed between the first electrolysis electrode 8 and the second electrode 5. It can be provided so that the electrolyte does not flow into the interface. Further, when the first electrolysis electrode 8 is provided on the insulating portion 11 as shown in FIGS. 7 and 8, the sealing portion 9 has an electrolyte solution at the interface between the first electrolysis electrode 8 and the insulating portion 11. It can be provided so as not to flow. Further, when the first electrolysis electrode 8 is provided on the third conductive portion 25, the seal portion 9 prevents the electrolyte from flowing into the interface between the first electrolysis electrode 8 and the third conductive portion 25. Can be provided. By these things, peeling of the electrode 8 for 1st electrolysis resulting from electrolyte solution can be prevented.
- the seal portion 9 is formed between the second electrolysis electrode 7 and the insulating portion 11. It can be provided so that the electrolyte does not flow into the interface.
- the seal portion 9 is an interface between the second electrolysis electrode 7 and the second conductive portion 24. It can be provided so that the electrolyte does not flow into the.
- the seal portion 9 includes an electrolyte chamber 15 between the first electrolysis electrode 8 and the top plate 14, and an electrolyte chamber 15 between the second electrolysis electrode 7 and the top plate 14. It can also be provided so as to partition.
- the first gas and the second gas can be separated by the seal portion 9, and the seal portion 9 can be used as the partition wall 13. Thereby, the number of members and the member cost can be reduced, and the manufacturing process can be simplified.
- sticker part 9 is comprised from the material which has corrosion resistance with respect to electrolyte solution, and liquid shielding property,
- it can comprise from the material which has acid resistance, and the material which has alkali resistance.
- the acid-resistant material include a fluorine resin.
- the material having alkali resistance include an oxide film such as SiO 2 , a nitride film such as SiN x , an epoxy resin, a fluorine resin, polyethylene, polypropylene, nylon, and polyvinyl chloride.
- the formation method of the seal part 9 is not specifically limited, For example, it can form by the apply
- the top plate 14 can be provided on the first electrolysis electrode 8 and the second electrolysis electrode 7 so as to face the translucent substrate 1.
- the top plate 14 can be provided such that a space is provided between the first electrolysis electrode 8 and the second electrolysis electrode 7 and the top plate 14. This space can be used as the electrolytic solution chamber 15, and the first electrolytic electrode 8 and the second electrolytic electrode 7 can be brought into contact with the electrolytic solution by introducing the electrolytic solution into the electrolytic solution chamber 15.
- the top plate 14 may be the bottom part of a box.
- the top plate 14 is a material that constitutes the electrolytic solution chamber 15 and confines the generated first gas and second gas, and a highly confidential substance is required. It is not particularly limited whether it is transparent or opaque, but it is preferably a transparent material in that it can be visually confirmed that the first gas and the second gas are generated. .
- the transparent top plate is not particularly limited, and examples thereof include a transparent rigid material such as quartz glass, Pyrex (registered trademark), and a synthetic quartz plate, a transparent resin plate, and a transparent resin film. Among them, it is preferable to use a glass material because it is a gas that is not chemically permeable and is chemically and physically stable.
- the partition wall 13 includes an electrolyte chamber 15 that is a space between the first electrolysis electrode 8 and the top plate 14 and an electrolyte chamber 15 that is a space between the second electrolysis electrode 7 and the top plate 14. It can be provided so as to partition. As a result, the first gas and the second gas generated by the first electrolysis electrode 8 and the second electrolysis electrode 7 can be prevented from mixing, and the first gas and the second gas can be separated. It can be recovered.
- the partition wall 13 may be the same member as the seal portion 9 as shown in FIG.
- the partition wall 13 may include an ion exchanger.
- the ion concentration that is unbalanced between the electrolytic solution in the space between the first electrolysis electrode 8 and the top plate 14 and the electrolytic solution in the space between the second electrolysis electrode 7 and the top plate 14 is obtained. Can be kept constant.
- an inorganic film such as porous glass, porous zirconia, or porous alumina or an ion exchanger
- an ion exchanger any ion exchanger known in the art can be used, and a proton conductive membrane, a cation exchange membrane, an anion exchange membrane, or the like can be used.
- the material of the proton conductive film is not particularly limited as long as it is a material having proton conductivity and electrical insulation, and a polymer film, an inorganic film, or a composite film can be used.
- polymer membrane examples include Nafion (registered trademark) manufactured by DuPont, Aciplex (registered trademark) manufactured by Asahi Kasei Co., and Flemion (registered trademark) manufactured by Asahi Glass Co., Ltd., which are perfluorosulfonic acid electrolyte membranes.
- membranes and hydrocarbon electrolyte membranes such as polystyrene sulfonic acid and sulfonated polyether ether ketone.
- Examples of the inorganic film include films made of phosphate glass, cesium hydrogen sulfate, polytungstophosphoric acid, ammonium polyphosphate, and the like.
- Examples of the composite membrane include a membrane made of a sulfonated polyimide polymer, a composite of an inorganic material such as tungstic acid and an organic material such as polyimide, and specifically, Gore Select membrane (registered trademark) or pores manufactured by Gore. Examples thereof include a filling electrolyte membrane.
- a high temperature environment for example, 100 ° C.
- sulfonated polyimide 2-acrylamido-2-methylpropanesulfonic acid (AMPS)
- APMS 2-acrylamido-2-methylpropanesulfonic acid
- sulfonated polybenzimidazole phosphonated polybenzimidazole
- sulfuric acid examples include cesium hydrogen and ammonium polyphosphate.
- the cation exchange membrane may be any solid polymer electrolyte that can move cations.
- fluorine ion exchange membranes such as perfluorocarbon sulfonic acid membranes and perfluorocarbon carboxylic acid membranes, polybenzimidazole membranes impregnated with phosphoric acid, polystyrene sulfonic acid membranes, sulfonated styrene / vinylbenzene copolymers Examples include membranes.
- an anion exchange membrane a solid polymer electrolyte capable of transferring anions can be used.
- a polyorthophenylenediamine film, a fluorine-based ion exchange film having an ammonium salt derivative group, a vinylbenzene polymer film having an ammonium salt derivative group, a film obtained by aminating a chloromethylstyrene / vinylbenzene copolymer, etc. can be mentioned.
- sealing material 16 adheres the translucent substrate 1 and the top plate 14, and seals the electrolyte flowing in the gas production device 23 and the first gas and the second gas generated in the gas production device 23. Material. When using a box-shaped thing for the top plate 14, the sealing material 16 is used in order to adhere
- an ultraviolet curable adhesive, a thermosetting adhesive, or the like is preferably used, but the type thereof is not limited.
- UV curable adhesives are resins that undergo polymerization when irradiated with light having a wavelength of 200 to 400 nm and undergo a curing reaction within a few seconds after light irradiation, and are classified into radical polymerization type and cationic polymerization type.
- the polymerization type resin include acrylates, unsaturated polyesters, and examples of the cationic polymerization type include epoxy, oxetane, and vinyl ether.
- thermosetting polymer adhesive include organic resins such as phenol resin, epoxy resin, melamine resin, urea resin, and thermosetting polyimide.
- thermosetting polymer adhesive is heated and polymerized in a state where pressure is applied at the time of thermocompression bonding, and then cooled to room temperature while being pressurized. I don't need it.
- a hybrid material having high adhesion to the glass substrate can be used. By using a hybrid material, mechanical properties such as elastic modulus and hardness are improved, and heat resistance and chemical resistance are dramatically improved.
- the hybrid material is composed of inorganic colloidal particles and an organic binder resin. For example, what is comprised from inorganic colloidal particles, such as a silica, and organic binder resin, such as an epoxy resin, a polyurethane acrylate resin, and a polyester acrylate resin, is mentioned.
- the sealing material 16 is described.
- the sealing material 16 is not limited as long as it has a function of bonding the translucent substrate 1 and the top plate 14, and a member such as a screw is externally used using a resin or metal gasket. It is also possible to appropriately use a method of applying pressure physically to increase confidentiality.
- the electrolytic solution chamber 15 can be a space between the first electrolysis electrode 8 and the top plate 14 and a space between the second electrolysis electrode 7 and the top plate 14. Further, the electrolyte chamber 15 can be partitioned by the partition wall 13. For example, a pump or a fan that circulates the electrolyte in the electrolyte chamber 15 so that the generated bubbles of the first gas and the second gas are efficiently separated from the first electrolysis electrode 8 or the second electrolysis electrode 7. It is also possible to provide a simple device such as a heat convection generator.
- the water supply port 18 is a part of the sealing material 16 included in the gas production device 23 or the top plate 14. It can be provided by making an opening in a part or the like.
- the water supply port 18 is arranged to replenish the electrolytic solution decomposed into the first gas and the second gas, and the arrangement location and shape of the water supply port 18 can be efficiently supplied to the gas production apparatus. For example, there is no particular limitation.
- the first gas discharge port 20 has an upper end of a surface that can contact the electrolytic solution of the first electrolysis electrode 8 when the gas production apparatus is installed so that the light receiving surface of the photoelectric conversion unit 2 is inclined with respect to the horizontal plane. Can be provided in the vicinity.
- the second gas discharge port 19 has an upper end of a surface that can contact the electrolytic solution of the second electrolysis electrode 7 when the gas production apparatus is installed so that the light receiving surface of the photoelectric conversion unit 2 is inclined with respect to the horizontal plane. Can be provided in the vicinity.
- first gas discharge port 20 can be connected to the first gas discharge path
- second gas discharge port 19 can be connected to the second gas discharge path.
- first gas exhaust path can be electrically connected to the plurality of first gas exhaust ports 20
- the second gas exhaust path can be electrically connected to the plurality of second gas exhaust ports 19.
- Electrolytic Solution is not particularly limited as long as it is a raw material for the first gas and the second gas.
- the electrolytic solution is an aqueous solution containing an electrolyte, for example, an electrolytic solution containing 0.1 M H 2 SO 4 , 0.1M potassium phosphate buffer.
- hydrogen and oxygen can be produced from the electrolytic solution as the first gas and the second gas.
- the gas manufacturing apparatus 23 is installed so that the light receiving surface of the photoelectric conversion unit 2 is inclined with respect to the horizontal plane, the electrolytic solution is introduced into the electrolytic solution chamber 15, and sunlight is photoelectrically generated.
- the first gas and the second gas are generated from the first electrolysis electrode 8 and the second electrolysis electrode 7 by being incident on the light receiving surface of the conversion unit 2, and the first gas discharge port 20 and the second gas discharge port 19.
- the first gas and the second gas can be discharged respectively from Thereby, the first gas and the second gas can be produced.
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- Photovoltaic Devices (AREA)
Abstract
Cet appareil de production de gaz est caractérisé en ce qu'il comprend : une partie de conversion photoélectrique qui a une surface de réception de lumière et une surface arrière de celle-ci ; une première électrode pour l'électrolyse et une seconde électrode pour l'électrolyse, qui sont disposées côte à côte sur la surface arrière ; et une partie de scellement étanche qui est disposée sur la partie périphérique de la première ou de la seconde électrode pour l'électrolyse. L'appareil de production de gaz est également caractérisé en ce que : les première et seconde électrodes pour l'électrolyse sont disposées de façon à électrolyser une solution d'électrolyte, lorsque les première et seconde électrodes pour l'électrolyse viennent en contact avec la solution d'électrolyte, par l'utilisation de la force électromotrice qui est générée lorsque la partie de conversion photoélectrique reçoit de la lumière et pour produire respectivement un premier gaz et un second gaz ; et la partie de scellement étanche présente une résistance à la corrosion à l'encontre de la solution d'électrolyte et est disposée de façon à empêcher la solution d'électrolyte de s'écouler dans l'espace entre la première ou la seconde électrode pour l'électrolyse et la partie de conversion photoélectrique.
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JP2010-264026 | 2010-11-26 | ||
JP2010264026A JP5719576B2 (ja) | 2010-11-26 | 2010-11-26 | 気体製造装置および気体製造方法 |
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WO2012070296A1 true WO2012070296A1 (fr) | 2012-05-31 |
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PCT/JP2011/070865 WO2012070296A1 (fr) | 2010-11-26 | 2011-09-13 | Appareil de production de gaz et procédé de production de gaz |
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JP (1) | JP5719576B2 (fr) |
WO (1) | WO2012070296A1 (fr) |
Cited By (4)
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JP2013253270A (ja) * | 2012-06-05 | 2013-12-19 | Sharp Corp | 二酸化炭素還元装置 |
CN106170586A (zh) * | 2014-05-20 | 2016-11-30 | 株式会社东芝 | 光电化学反应装置 |
JP7072931B1 (ja) | 2021-01-22 | 2022-05-23 | 国際先端技術総合研究所株式会社 | 酸素及び水素の水分解による製造方法 |
JP2022113162A (ja) * | 2021-01-22 | 2022-08-03 | 国際先端技術総合研究所株式会社 | 酸素及び水素の水分解による製造方法 |
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JP2013253270A (ja) * | 2012-06-05 | 2013-12-19 | Sharp Corp | 二酸化炭素還元装置 |
CN106170586A (zh) * | 2014-05-20 | 2016-11-30 | 株式会社东芝 | 光电化学反应装置 |
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JP7072931B1 (ja) | 2021-01-22 | 2022-05-23 | 国際先端技術総合研究所株式会社 | 酸素及び水素の水分解による製造方法 |
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JP2022112736A (ja) * | 2021-01-22 | 2022-08-03 | 国際先端技術総合研究所株式会社 | 酸素及び水素の水分解による製造方法 |
JP2022113162A (ja) * | 2021-01-22 | 2022-08-03 | 国際先端技術総合研究所株式会社 | 酸素及び水素の水分解による製造方法 |
JP7208685B2 (ja) | 2021-01-22 | 2023-01-19 | 国際先端技術総合研究所株式会社 | 酸素及び水素の製造用電極及び製造装置 |
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JP2012112023A (ja) | 2012-06-14 |
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