US20160115606A1 - Membrane-electrode assembly for water electrolysis - Google Patents
Membrane-electrode assembly for water electrolysis Download PDFInfo
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- US20160115606A1 US20160115606A1 US14/720,776 US201514720776A US2016115606A1 US 20160115606 A1 US20160115606 A1 US 20160115606A1 US 201514720776 A US201514720776 A US 201514720776A US 2016115606 A1 US2016115606 A1 US 2016115606A1
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Images
Classifications
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- 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
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
-
- 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
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C25B1/10—
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- C25B9/10—
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- 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
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
- C25B9/23—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms comprising ion-exchange membranes in or on which electrode material is embedded
-
- 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
- C25B9/70—Assemblies comprising two or more cells
- C25B9/73—Assemblies comprising two or more cells of the filter-press type
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- 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
Definitions
- the present invention generally relates to a membrane-electrode assembly for water electrolysis and, more particularly, to a membrane-electrode assembly with a sensor device disposed therein so as to sense an environmental change where water electrolysis takes place.
- a fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent.
- fuel cells produce water and heat and are thus more environment-friendly. Compared with green energies such as solar energy and wind power, fuel cells are less weather-dependent and more stable in providing electricity. Accordingly, fuel cells have become an indispensable renewable energy source.
- hydrogen is viewed as the most potential energy carrier because it is clean and harmless to the environment.
- a proton-exchange membrane PEM
- a direct current is conducted between the anode and the cathode so that gaseous oxygen and hydrogen ions are produced due to electrochemical reactions at the anode and the hydrogen ions flow through the proton-exchange membrane to the cathode to acquire electrons and to be reduced to gaseous hydrogen.
- the water electrolysis efficiency is affected by the environmental change such as the variations of temperature, pressure, voltage and current during the electrochemical reactions in the water electrolysis apparatus. Accordingly, how the environmental change is measured has become important.
- the present invention provides a membrane-electrode assembly for water electrolysis.
- the membrane-electrode assembly includes a sensor device disposed therein so as to sense an environmental change such as the variation in temperature, pressure, voltage and/or current where water electrolysis takes place.
- One embodiment of the present invention provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer, a first gas diffusion layer, a second gas diffusion layer and a first sensor chip.
- the proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer.
- the first gas diffusion layer is disposed on an outer side of the first catalyst layer.
- the second gas diffusion layer is disposed on an outer side of the second catalyst layer.
- the first sensor chip is sandwiched between the first catalyst layer and first gas diffusion layer to sense an environmental change where water electrolysis takes place.
- One embodiment of the present invention further provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer, a first gas diffusion layer, a second gas diffusion layer, a first packaging rim and a second packaging rim.
- the proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer.
- the first gas diffusion layer is disposed on an outer side of the first catalyst layer.
- An inner side of the first gas diffusion layer corresponds to the outer side of the first catalyst layer.
- the second gas diffusion layer is disposed on an outer side of the second catalyst layer.
- An inner side of the second gas diffusion layer corresponds to the outer side of the second catalyst layer.
- the first packaging rim is disposed on an outer side of the first gas diffusion layer.
- the first packaging rim includes a first rim portion and a first sensor portion.
- the first sensor portion is extended from the first rim portion to the first gas diffusion layer to sense an environmental change of the first gas diffusion layer where water electrolysis takes place.
- the second packaging rim is disposed on an outer side of the second gas diffusion layer.
- One embodiment of the present invention further provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer and a first sensor chip.
- the proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer.
- the first sensor chip is sandwiched between the first catalyst layer and the proton-exchange membrane so that the first sensor chip senses an environmental change where water electrolysis takes place.
- the membrane-electrode assembly for water electrolysis in one embodiment of the present invention includes at least one sensor device therein.
- the sensor device senses an environmental change where water electrolysis takes place and transmits the sensed signal to an external surveillance device so that the surveillance device performs microscopic diagnosis and analysis on the membrane-electrode assembly.
- FIG. 1 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to one embodiment of the present invention
- FIG. 2 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to another embodiment of the present invention.
- FIG. 3 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to still another embodiment of the present invention.
- first While such terms as “first,” “second,” etc., may be used to describe various components, such components must not be limited to the above terms. The above terms are used only to distinguish one component from another. For example, a second component may be referred to as a first component within the scope of the present invention, and similarly, the first component may be referred to as the second component. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
- FIG. 1 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to one embodiment of the present invention.
- the membrane-electrode assembly for water electrolysis 10 includes a proton-exchange membrane 100 , a first catalyst layer 110 , a second catalyst layer 112 , a first gas diffusion layer 120 , a second gas diffusion layer 122 , a first packaging rim 130 , a second packaging rim 132 and a sensor chip S.
- the proton-exchange membrane 100 is disposed between an inner side of the first catalyst layer 110 and an inner side of the second catalyst layer 112 .
- the proton-exchange membrane 100 , the first catalyst layer 110 and the second catalyst layer 112 are sandwiched between an inner side of the first gas diffusion layer 120 and an inner side of the second gas diffusion layer 122 .
- the sensor chip S is sandwiched between an outer side of the first catalyst layer 110 and the inner side of the first gas diffusion layer 120 .
- the first packaging rim 130 and the second packaging rim 132 are disposed, respectively, on an outer side of the first gas diffusion layer 120 and an outer side of the second gas diffusion layer 122 so as to package the proton-exchange membrane 100 , the sensor chip S, the first catalyst layer 110 , the second catalyst layer 112 , the first gas diffusion layer 120 and the second gas diffusion layer 122 .
- the sensor chip S is partially exposed outside the first packaging rim 130 and the second packaging rim 132 .
- the outer side of the first gas diffusion layer 120 and the outer side of the second gas diffusion layer 122 are exposed, respectively, through the empty portion 1301 of the first packaging rim 130 and the empty portion 1321 of the second packaging rim 132 .
- the first catalyst layer 110 and the second catalyst layer 112 may be formed by coating on both sides of the proton-exchange membrane 100 .
- the size of the first catalyst layer 110 and the size of the second catalyst layer 112 correspond, respectively, to the size of the first gas diffusion layer 120 and the size of the second gas diffusion layer 122 .
- the proton-exchange membrane 100 may include solid-state polymer for transmitting protons (such as hydrogen ions H+).
- the first catalyst layer 110 and the second catalyst layer 112 are catalysts for the cathode and the anode, respectively.
- the cathode catalyst may include catalysts such as Pt or Ru
- the anode catalyst may include catalysts such as IrO2 or RuO2.
- the first gas diffusion layer 120 corresponding to the first catalyst layer 110 may include porous graphite felt or carbon felt
- the second gas diffusion layer 122 corresponding to the second catalyst layer 112 i.e., the anode catalyst
- the first packaging rim 130 and the second packaging rim 132 may include thermoplastic polymer such as polyethylene (PE), polypropylene (PP), polytetrafluoroethene (PTFE), PVDF, EPDM, polyester, polyamide (PA), polyamide (PA), polyimide (PI), polyurethane (PU) and silicone.
- the present invention is not limited to the previous examples of the sizes and types of the proton-exchange membrane 100 , the first catalyst layer 110 , the second catalyst layer 112 , the first gas diffusion layer 120 , the second gas diffusion layer 122 , the first packaging rim 130 and the second packaging rim 132 .
- the person with ordinary skill in the art may make modifications according to practical demands.
- the sensor chip S includes a sensor portion S 2 and a connection portion S 1 .
- the sensor portion S 2 includes a sensor device (not shown) therein.
- the sensor device is electrically coupled to the connection portion S 1 .
- the sensor device can sense an environmental change such as a variation of temperature, voltage, current or/and pressure where water electrolysis takes place.
- the connection portion S 1 is exposed outside the first packaging rim 130 and the second packaging rim 132 , and can be implemented by a conductive output port (such as a conductive pad made of metal), for connecting an external surveillance device (not shown).
- connection portion S 1 transmits the sensed signal from the sensor portion S 2 to the external surveillance device (not shown) so that the surveillance device can perform real-time microscopic diagnosis and analysis on the membrane-electrode assembly according to the sensed signal from the sensor portion S 2 .
- the sensor device included in the sensor portion S 2 may be implemented by a flexible micro sensor for sensing temperature, current, voltage and/or pressure or an all-in-one micro sensor for sensing all of the above.
- the present invention is not limited to the number and the types of micro sensors included in the sensor portion S 2 .
- the micro sensor is implemented by a metal sensor circuit fabricated by microelectromechanical system (MEMS) technology to exhibit compactness and thinness.
- MEMS microelectromechanical system
- the sensor circuit may employ a stainless steel sheet as a flexible substrate and high temperature resistant polyimide (PI) as a protection layer, to which the present invention is not limited.
- the present invention is not limited to the number of sensor chips S included in the membrane-electrode assembly 10 .
- the surveillance device may perform real-time microscopic diagnosis and analysis on the environmental change such as variations of temperature, pressure, voltage and/or current on the membrane-electrode assembly 10 according to the sensed signal from the sensor chips S during electrochemical reactions.
- FIG. 2 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to another embodiment of the present invention.
- the membrane-electrode assembly for water electrolysis 20 includes a proton-exchange membrane 200 , a first catalyst layer 210 , a second catalyst layer 212 , a first gas diffusion layer 220 , a second gas diffusion layer 222 , a first packaging rim 230 and a second packaging rim 232 .
- the proton-exchange membrane 200 is disposed between an inner side of the first catalyst layer 210 and an inner side of the second catalyst layer 212 .
- the proton-exchange membrane 200 , the first catalyst layer 210 and the second catalyst layer 212 are sandwiched between an inner side of the first gas diffusion layer 220 and an inner side of the second gas diffusion layer 222 .
- the first packaging rim 230 and the second packaging rim 232 are disposed, respectively, on an outer side of the first gas diffusion layer 220 and an outer side of the first gas diffusion layer 222 so as to package the proton-exchange membrane 200 , the first catalyst layer 210 , the second catalyst layer 212 , the first gas diffusion layer 220 and the second gas diffusion layer 222 .
- the outer side of the first gas diffusion layer 220 and the outer side of the second gas diffusion layer 222 are exposed, respectively, through the empty portion 2301 of the first packaging rim 230 and the empty portion 2321 of the second packaging rim 232 .
- the membrane-electrode assembly 20 does not include a sensor chip S. Instead, the membrane-electrode assembly 20 includes a sensor portion 2303 extended from the rim portion 2302 of the first packaging rim 230 .
- the sensor portion 2303 extended from the rim portion 2302 to the first gas diffusion layer 220 senses an environmental change where water electrolysis takes place. In other words, the sensor portion 2303 can sense the environmental change of the first gas diffusion layer 220 .
- the second packaging rim 232 like the first packaging rim 230 , may also include a sensor portion 2323 extended from the rim portion 2322 .
- the sensor portion 2323 extended from the rim portion 2322 to the second gas diffusion layer 220 senses an environmental change of the second gas diffusion layer 222 where water electrolysis takes place.
- the present invention is not limited to the number of the sensor portions 2303 included in the first packaging rim 230 or the number of the sensor portions 2323 included in the second packaging rim 232 .
- a plurality of sensor portions 2303 may be extended from the rim portion 2302 or a plurality of sensor portions 2323 may be extended from the rim portion 2322 so as to sense the environmental changes of the first gas diffusion layer 220 or the second gas diffusion layer 222 where water electrolysis takes place.
- the second packaging rim 232 does not necessarily include the sensor portion 2323 .
- the present invention is not limited to the previous examples of the membrane-electrode assembly 20 .
- membrane-electrode assembly 20 has been described in details with reference to FIG. 1 and is not repeated herein.
- FIG. 3 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to still another embodiment of the present invention.
- the membrane-electrode assembly for water electrolysis 30 includes a proton-exchange membrane 300 , a first catalyst layer 310 , a second catalyst layer 312 , a first gas diffusion layer 320 , a second gas diffusion layer 322 , a first packaging rim 330 , a second packaging rim 332 and a sensor chip S.
- the proton-exchange membrane 300 is disposed between the first catalyst layer 310 and the second catalyst layer 312 .
- the proton-exchange membrane 300 , the first catalyst layer 310 and the second catalyst layer 312 are sandwiched between an inner side of the first gas diffusion layer 320 and an inner side of the second gas diffusion layer 322 .
- the first packaging rim 330 and the second packaging rim 332 are disposed, respectively, on an outer side of the first gas diffusion layer 320 and an outer side of the second gas diffusion layer 322 so as to package the proton-exchange membrane 300 , the sensor chip S, the first catalyst layer 310 , the second catalyst layer 312 , the first gas diffusion layer 320 and the second gas diffusion layer 322 .
- the sensor chip S is partially exposed outside the first packaging rim 330 and the second packaging rim 332 .
- the outer side of the first gas diffusion layer 320 and the outer side of the second gas diffusion layer 322 are exposed, respectively, through the empty portion 3301 of the first packaging rim 330 and the empty portion 3321 of the second packaging rim 332 .
- the present embodiment is different from the previous embodiment in FIG. 1 in that the sensor chip S is sandwiched between the proton-exchange membrane 300 and the first catalyst layer 310 and that the first catalyst layer 310 and the second catalyst layer 312 are formed by filtering printing, respectively, on a side of the first gas diffusion layer 320 and on a side of the second gas diffusion layer 322 .
- the sensor chip S can sense an environmental change where water electrolysis takes place. In other words, the sensor chip S can sense an environmental change between the proton-exchange membrane 300 and the first catalyst layer 310 .
- the present invention is not limited to the number of sensor chips S included in the membrane-electrode assembly 30 .
- the surveillance device may perform real-time microscopic diagnosis and analysis on the environmental change such as variations of temperature, pressure, voltage and/or current on the membrane-electrode assembly 30 according to the sensed signal from the sensor chips S during electrochemical reactions.
- the membrane-electrode assembly for water electrolysis in one embodiment of the present invention includes at least one sensor device therein.
- the sensor device senses an environmental change during water electrolysis and transmits the sensed signal to an external surveillance device so that the surveillance device performs microscopic diagnosis and analysis on the membrane-electrode assembly.
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Abstract
Description
- 1. Technical Field
- The present invention generally relates to a membrane-electrode assembly for water electrolysis and, more particularly, to a membrane-electrode assembly with a sensor device disposed therein so as to sense an environmental change where water electrolysis takes place.
- 2. Description of Related Art
- With the rapid development of industry, people have been speeding up consumption of fossil energy resources. This results in critical shortage of fossil energy sources as well as deterioration of the ecological environment. Therefore, it has been a main technology trend to develop high-efficiency and low-pollution renewable energy sources to replace fossil energy sources.
- Among renewable energy sources, a fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction with oxygen or another oxidizing agent. In addition to electricity, fuel cells produce water and heat and are thus more environment-friendly. Compared with green energies such as solar energy and wind power, fuel cells are less weather-dependent and more stable in providing electricity. Accordingly, fuel cells have become an indispensable renewable energy source.
- Among the renewable clean energy sources, hydrogen is viewed as the most potential energy carrier because it is clean and harmless to the environment. According to the state-of-the-art hydrogen preparation technologies, a proton-exchange membrane (PEM) is often used to prepare hydrogen with high efficiency. In a water electrolysis apparatus, water is added and a direct current is conducted between the anode and the cathode so that gaseous oxygen and hydrogen ions are produced due to electrochemical reactions at the anode and the hydrogen ions flow through the proton-exchange membrane to the cathode to acquire electrons and to be reduced to gaseous hydrogen.
- It should be noted that the water electrolysis efficiency is affected by the environmental change such as the variations of temperature, pressure, voltage and current during the electrochemical reactions in the water electrolysis apparatus. Accordingly, how the environmental change is measured has become important.
- The present invention provides a membrane-electrode assembly for water electrolysis. The membrane-electrode assembly includes a sensor device disposed therein so as to sense an environmental change such as the variation in temperature, pressure, voltage and/or current where water electrolysis takes place.
- One embodiment of the present invention provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer, a first gas diffusion layer, a second gas diffusion layer and a first sensor chip. The proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer. The first gas diffusion layer is disposed on an outer side of the first catalyst layer. The second gas diffusion layer is disposed on an outer side of the second catalyst layer. The first sensor chip is sandwiched between the first catalyst layer and first gas diffusion layer to sense an environmental change where water electrolysis takes place.
- One embodiment of the present invention further provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer, a first gas diffusion layer, a second gas diffusion layer, a first packaging rim and a second packaging rim. The proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer. The first gas diffusion layer is disposed on an outer side of the first catalyst layer. An inner side of the first gas diffusion layer corresponds to the outer side of the first catalyst layer. The second gas diffusion layer is disposed on an outer side of the second catalyst layer. An inner side of the second gas diffusion layer corresponds to the outer side of the second catalyst layer. The first packaging rim is disposed on an outer side of the first gas diffusion layer. The first packaging rim includes a first rim portion and a first sensor portion. The first sensor portion is extended from the first rim portion to the first gas diffusion layer to sense an environmental change of the first gas diffusion layer where water electrolysis takes place. The second packaging rim is disposed on an outer side of the second gas diffusion layer.
- One embodiment of the present invention further provides a membrane-electrode assembly for water electrolysis, including a proton-exchange membrane, a first catalyst layer, a second catalyst layer and a first sensor chip. The proton-exchange membrane is disposed between an inner side of the first catalyst layer and an inner side of the second catalyst layer. The first sensor chip is sandwiched between the first catalyst layer and the proton-exchange membrane so that the first sensor chip senses an environmental change where water electrolysis takes place.
- As stated above, the membrane-electrode assembly for water electrolysis in one embodiment of the present invention includes at least one sensor device therein. The sensor device senses an environmental change where water electrolysis takes place and transmits the sensed signal to an external surveillance device so that the surveillance device performs microscopic diagnosis and analysis on the membrane-electrode assembly.
- In order to further understand the techniques, means and effects of the present disclosure, the following detailed descriptions and appended drawings are hereby referred to, such that, and through which, the purposes, features and aspects of the present disclosure can be thoroughly and concretely appreciated; however, the appended drawings are merely provided for reference and illustration, without any intention to be used for limiting the present disclosure.
- The accompanying drawings are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification. The drawings illustrate exemplary embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.
-
FIG. 1 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to one embodiment of the present invention; -
FIG. 2 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to another embodiment of the present invention; and -
FIG. 3 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to still another embodiment of the present invention. - The detailed description set forth below in connection with the appended drawings is intended as a description of certain embodiments of the present disclosure, and is not intended to represent the only forms that may be developed or utilized. The description sets forth the various functions in connection with the illustrated embodiments, but it is to be understood, however, that the same or equivalent functions may be accomplished by different embodiments that are also intended to be encompassed within the scope of the present disclosure.
- While such terms as “first,” “second,” etc., may be used to describe various components, such components must not be limited to the above terms. The above terms are used only to distinguish one component from another. For example, a second component may be referred to as a first component within the scope of the present invention, and similarly, the first component may be referred to as the second component. As used herein, the term “and/or” includes any and all combinations of one or more of the associated listed items.
- [Embodiment of Membrane-Electrode Assembly for Water Electrolysis]
- With reference to
FIG. 1 ,FIG. 1 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to one embodiment of the present invention. The membrane-electrode assembly forwater electrolysis 10 includes a proton-exchange membrane 100, afirst catalyst layer 110, asecond catalyst layer 112, a firstgas diffusion layer 120, a secondgas diffusion layer 122, afirst packaging rim 130, asecond packaging rim 132 and a sensor chip S. As shown inFIG. 1 , the proton-exchange membrane 100 is disposed between an inner side of thefirst catalyst layer 110 and an inner side of thesecond catalyst layer 112. The proton-exchange membrane 100, thefirst catalyst layer 110 and thesecond catalyst layer 112 are sandwiched between an inner side of the firstgas diffusion layer 120 and an inner side of the secondgas diffusion layer 122. The sensor chip S is sandwiched between an outer side of thefirst catalyst layer 110 and the inner side of the firstgas diffusion layer 120. Thefirst packaging rim 130 and thesecond packaging rim 132 are disposed, respectively, on an outer side of the firstgas diffusion layer 120 and an outer side of the secondgas diffusion layer 122 so as to package the proton-exchange membrane 100, the sensor chip S, thefirst catalyst layer 110, thesecond catalyst layer 112, the firstgas diffusion layer 120 and the secondgas diffusion layer 122. More particularly, the sensor chip S is partially exposed outside thefirst packaging rim 130 and thesecond packaging rim 132. The outer side of the firstgas diffusion layer 120 and the outer side of the secondgas diffusion layer 122 are exposed, respectively, through theempty portion 1301 of thefirst packaging rim 130 and theempty portion 1321 of thesecond packaging rim 132. - In the present embodiment, the
first catalyst layer 110 and thesecond catalyst layer 112 may be formed by coating on both sides of the proton-exchange membrane 100. Also, the size of thefirst catalyst layer 110 and the size of thesecond catalyst layer 112 correspond, respectively, to the size of the firstgas diffusion layer 120 and the size of the secondgas diffusion layer 122. The proton-exchange membrane 100 may include solid-state polymer for transmitting protons (such as hydrogen ions H+). Thefirst catalyst layer 110 and thesecond catalyst layer 112 are catalysts for the cathode and the anode, respectively. The cathode catalyst may include catalysts such as Pt or Ru, and the anode catalyst may include catalysts such as IrO2 or RuO2. The firstgas diffusion layer 120 corresponding to the first catalyst layer 110 (i.e., the cathode catalyst) may include porous graphite felt or carbon felt, and the secondgas diffusion layer 122 corresponding to the second catalyst layer 112 (i.e., the anode catalyst) may also include porous graphite felt or carbon felt. Thefirst packaging rim 130 and thesecond packaging rim 132 may include thermoplastic polymer such as polyethylene (PE), polypropylene (PP), polytetrafluoroethene (PTFE), PVDF, EPDM, polyester, polyamide (PA), polyamide (PA), polyimide (PI), polyurethane (PU) and silicone. - It should be noted that the present invention is not limited to the previous examples of the sizes and types of the proton-
exchange membrane 100, thefirst catalyst layer 110, thesecond catalyst layer 112, the firstgas diffusion layer 120, the secondgas diffusion layer 122, thefirst packaging rim 130 and thesecond packaging rim 132. The person with ordinary skill in the art may make modifications according to practical demands. - The sensor chip S includes a sensor portion S2 and a connection portion S1. The sensor portion S2 includes a sensor device (not shown) therein. The sensor device is electrically coupled to the connection portion S1. The sensor device can sense an environmental change such as a variation of temperature, voltage, current or/and pressure where water electrolysis takes place. The connection portion S1 is exposed outside the
first packaging rim 130 and thesecond packaging rim 132, and can be implemented by a conductive output port (such as a conductive pad made of metal), for connecting an external surveillance device (not shown). The connection portion S1 transmits the sensed signal from the sensor portion S2 to the external surveillance device (not shown) so that the surveillance device can perform real-time microscopic diagnosis and analysis on the membrane-electrode assembly according to the sensed signal from the sensor portion S2. - In the present embodiment, the sensor device included in the sensor portion S2 may be implemented by a flexible micro sensor for sensing temperature, current, voltage and/or pressure or an all-in-one micro sensor for sensing all of the above. The present invention is not limited to the number and the types of micro sensors included in the sensor portion S2. It should be noted that the micro sensor is implemented by a metal sensor circuit fabricated by microelectromechanical system (MEMS) technology to exhibit compactness and thinness. The sensor circuit may employ a stainless steel sheet as a flexible substrate and high temperature resistant polyimide (PI) as a protection layer, to which the present invention is not limited.
- It should be also noted that the present invention is not limited to the number of sensor chips S included in the membrane-
electrode assembly 10. In other words, there may be a plurality of sensor chips S disposed between thefirst catalyst layer 110 and the firstgas diffusion layer 120 so as to sense various environmental changes where water electrolysis takes place between thefirst catalyst layer 110 and the firstgas diffusion layer 120. - In another embodiment, there may further be at least one sensor chip S disposed between the
second catalyst layer 112 and the secondgas diffusion layer 122 so as to sense at least one environmental change where water electrolysis takes place between thesecond catalyst layer 112 and the secondgas diffusion layer 122. - Accordingly, by providing a plurality of sensor chips S between catalyst layers and gas diffusion layers, the surveillance device may perform real-time microscopic diagnosis and analysis on the environmental change such as variations of temperature, pressure, voltage and/or current on the membrane-
electrode assembly 10 according to the sensed signal from the sensor chips S during electrochemical reactions. - [Another Embodiment of Membrane-Electrode Assembly for Water Electrolysis]
- With reference to
FIG. 2 ,FIG. 2 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to another embodiment of the present invention. The membrane-electrode assembly forwater electrolysis 20 includes a proton-exchange membrane 200, afirst catalyst layer 210, asecond catalyst layer 212, a firstgas diffusion layer 220, a secondgas diffusion layer 222, afirst packaging rim 230 and asecond packaging rim 232. As shown inFIG. 2 , the proton-exchange membrane 200 is disposed between an inner side of thefirst catalyst layer 210 and an inner side of thesecond catalyst layer 212. The proton-exchange membrane 200, thefirst catalyst layer 210 and thesecond catalyst layer 212 are sandwiched between an inner side of the firstgas diffusion layer 220 and an inner side of the secondgas diffusion layer 222. Thefirst packaging rim 230 and thesecond packaging rim 232 are disposed, respectively, on an outer side of the firstgas diffusion layer 220 and an outer side of the firstgas diffusion layer 222 so as to package the proton-exchange membrane 200, thefirst catalyst layer 210, thesecond catalyst layer 212, the firstgas diffusion layer 220 and the secondgas diffusion layer 222. The outer side of the firstgas diffusion layer 220 and the outer side of the secondgas diffusion layer 222 are exposed, respectively, through theempty portion 2301 of thefirst packaging rim 230 and theempty portion 2321 of thesecond packaging rim 232. - The present embodiment is different from the previous embodiment in
FIG. 1 in that the membrane-electrode assembly 20 does not include a sensor chip S. Instead, the membrane-electrode assembly 20 includes asensor portion 2303 extended from therim portion 2302 of thefirst packaging rim 230. Thesensor portion 2303 extended from therim portion 2302 to the firstgas diffusion layer 220 senses an environmental change where water electrolysis takes place. In other words, thesensor portion 2303 can sense the environmental change of the firstgas diffusion layer 220. Moreover, thesecond packaging rim 232, like thefirst packaging rim 230, may also include asensor portion 2323 extended from therim portion 2322. Thesensor portion 2323 extended from therim portion 2322 to the secondgas diffusion layer 220 senses an environmental change of the secondgas diffusion layer 222 where water electrolysis takes place. - It should be noted that the present invention is not limited to the number of the
sensor portions 2303 included in thefirst packaging rim 230 or the number of thesensor portions 2323 included in thesecond packaging rim 232. In other words, a plurality ofsensor portions 2303 may be extended from therim portion 2302 or a plurality ofsensor portions 2323 may be extended from therim portion 2322 so as to sense the environmental changes of the firstgas diffusion layer 220 or the secondgas diffusion layer 222 where water electrolysis takes place. In another embodiment, thesecond packaging rim 232 does not necessarily include thesensor portion 2323. The present invention is not limited to the previous examples of the membrane-electrode assembly 20. - It should be noted that the membrane-
electrode assembly 20 has been described in details with reference toFIG. 1 and is not repeated herein. - [Still Another Embodiment for Membrane-Electrode Assembly for Water Electrolysis]
- With reference to
FIG. 3 ,FIG. 3 is a schematic diagram of a membrane-electrode assembly for water electrolysis according to still another embodiment of the present invention. The membrane-electrode assembly forwater electrolysis 30 includes a proton-exchange membrane 300, afirst catalyst layer 310, asecond catalyst layer 312, a firstgas diffusion layer 320, a secondgas diffusion layer 322, afirst packaging rim 330, asecond packaging rim 332 and a sensor chip S. As shown inFIG. 3 , the proton-exchange membrane 300 is disposed between thefirst catalyst layer 310 and thesecond catalyst layer 312. The proton-exchange membrane 300, thefirst catalyst layer 310 and thesecond catalyst layer 312 are sandwiched between an inner side of the firstgas diffusion layer 320 and an inner side of the secondgas diffusion layer 322. Thefirst packaging rim 330 and thesecond packaging rim 332 are disposed, respectively, on an outer side of the firstgas diffusion layer 320 and an outer side of the secondgas diffusion layer 322 so as to package the proton-exchange membrane 300, the sensor chip S, thefirst catalyst layer 310, thesecond catalyst layer 312, the firstgas diffusion layer 320 and the secondgas diffusion layer 322. The sensor chip S is partially exposed outside thefirst packaging rim 330 and thesecond packaging rim 332. The outer side of the firstgas diffusion layer 320 and the outer side of the secondgas diffusion layer 322 are exposed, respectively, through theempty portion 3301 of thefirst packaging rim 330 and theempty portion 3321 of thesecond packaging rim 332. - The present embodiment is different from the previous embodiment in
FIG. 1 in that the sensor chip S is sandwiched between the proton-exchange membrane 300 and thefirst catalyst layer 310 and that thefirst catalyst layer 310 and thesecond catalyst layer 312 are formed by filtering printing, respectively, on a side of the firstgas diffusion layer 320 and on a side of the secondgas diffusion layer 322. The sensor chip S can sense an environmental change where water electrolysis takes place. In other words, the sensor chip S can sense an environmental change between the proton-exchange membrane 300 and thefirst catalyst layer 310. - It should be noted that the present invention is not limited to the number of sensor chips S included in the membrane-
electrode assembly 30. In other words, there may be a plurality of sensor chips S provided between the proton-exchange membrane 300 and thefirst catalyst layer 310 so as to sense the environmental change where water electrolysis takes place between the proton-exchange membrane 300 and the first catalyst layer 31. - In another embodiment, there may further be at least one sensor chip S between the proton-
exchange membrane 300 and thesecond catalyst layer 312 so as to sense an environmental change where water electrolysis takes place between the proton-exchange membrane 300 and thesecond catalyst layer 312. - As stated above, by providing a plurality of sensor chips S between catalyst layers and gas diffusion layers, the surveillance device may perform real-time microscopic diagnosis and analysis on the environmental change such as variations of temperature, pressure, voltage and/or current on the membrane-
electrode assembly 30 according to the sensed signal from the sensor chips S during electrochemical reactions. - [Functions of Embodiments]
- Accordingly, the membrane-electrode assembly for water electrolysis in one embodiment of the present invention includes at least one sensor device therein. The sensor device senses an environmental change during water electrolysis and transmits the sensed signal to an external surveillance device so that the surveillance device performs microscopic diagnosis and analysis on the membrane-electrode assembly.
- The above-mentioned descriptions represent merely the exemplary embodiment of the present disclosure, without any intention to limit the scope of the present disclosure thereto. Various equivalent changes, alterations or modifications based on the claims of present disclosure are all consequently viewed as being embraced by the scope of the present disclosure.
Claims (10)
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US15/980,357 US10468700B2 (en) | 2014-10-24 | 2018-05-15 | Membrane-electrode assembly for water electrolysis |
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TW103136855A TWI553160B (en) | 2014-10-24 | 2014-10-24 | Membrane electrode assembly for electrolysis of water |
TW103136855 | 2014-10-24 |
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US15/980,357 Continuation-In-Part US10468700B2 (en) | 2014-10-24 | 2018-05-15 | Membrane-electrode assembly for water electrolysis |
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US11205813B2 (en) * | 2018-07-20 | 2021-12-21 | Yuan Ze University | Manufacturing method of proton battery and proton battery module |
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TWI740670B (en) * | 2020-10-05 | 2021-09-21 | 元智大學 | High-pressure water electrolysis system |
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