JP6880404B2 - 酸素発生電極及び酸素発生装置 - Google Patents
酸素発生電極及び酸素発生装置 Download PDFInfo
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- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims description 42
- 239000001301 oxygen Substances 0.000 title claims description 42
- 229910052760 oxygen Inorganic materials 0.000 title claims description 42
- 239000003054 catalyst Substances 0.000 claims description 35
- 239000000758 substrate Substances 0.000 claims description 31
- 230000031700 light absorption Effects 0.000 claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000008151 electrolyte solution Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 239000012535 impurity Substances 0.000 claims description 8
- 239000003792 electrolyte Substances 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 6
- 229940071182 stannate Drugs 0.000 claims description 5
- 125000005402 stannate group Chemical group 0.000 claims description 5
- 229910019828 La0.7Sr0.3CoO3 Inorganic materials 0.000 description 9
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
- 229910001882 dioxygen Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- 238000004549 pulsed laser deposition Methods 0.000 description 4
- 229910017771 LaFeO Inorganic materials 0.000 description 3
- 230000004075 alteration Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910002367 SrTiO Inorganic materials 0.000 description 2
- -1 hydroxide ions Chemical class 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 1
- 229910021607 Silver chloride Inorganic materials 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910000457 iridium oxide Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229910052707 ruthenium Inorganic materials 0.000 description 1
- 229910001925 ruthenium oxide Inorganic materials 0.000 description 1
- WOCIAKWEIIZHES-UHFFFAOYSA-N ruthenium(iv) oxide Chemical compound O=[Ru]=O WOCIAKWEIIZHES-UHFFFAOYSA-N 0.000 description 1
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
- H01G9/20—Light-sensitive devices
- H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
-
- 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
-
- 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
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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
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
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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
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/055—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material
- C25B11/057—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the substrate or carrier material consisting of a single element or compound
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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
- C25B11/00—Electrodes; Manufacture thereof not otherwise provided for
- C25B11/04—Electrodes; Manufacture thereof not otherwise provided for characterised by the material
- C25B11/051—Electrodes formed of electrocatalysts on a substrate or carrier
- C25B11/073—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material
- C25B11/075—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound
- C25B11/077—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide
- C25B11/0773—Electrodes formed of electrocatalysts on a substrate or carrier characterised by the electrocatalyst material consisting of a single catalytic element or catalytic compound the compound being a non-noble metal oxide of the perovskite type
-
- 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
- Y02E10/542—Dye sensitized solar 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
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- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Catalysts (AREA)
- Electrodes For Compound Or Non-Metal Manufacture (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Description
先ず、第1の実施形態について説明する。第1の実施形態は、酸素発生電極の一例である。図1は、第1の実施形態に係る酸素発生電極の構成を示す断面図である。図2は、第1の実施形態に係る酸素発生電極内のエネルギーの関係を示す図である。
次に、第2の実施形態について説明する。第2の実施形態は、酸素発生電極1を備えた酸素発生装置に関する。図3は、第2の実施形態に係る酸素発生装置の構成を示す図である。
反応A:4OH-+4h+→2H2O+O2
反応B:2H2O+2e-→H2+2OH-
反応C:2H2O→4H++O2+4e-
反応D:4H++4e-→2H2
ペロブスカイト構造を備えたスズ酸塩を含む導電層と、
前記導電層上の光吸収層と、
ペロブスカイト構造を備えた酸化物を含む前記光吸収層上の酸素発生反応の触媒層と、
を有し、
前記導電層は、不純物を含んで縮退しており、
前記光吸収層は前記導電層にタイプIIのヘテロ接合をしており、
前記触媒層は、不純物を含んで縮退しており、
前記触媒層の価電子帯の上端は前記光吸収層の価電子帯の上端より高いことを特徴とする酸素発生電極。
前記光吸収層のバンドギャップは1eV以上3eV以下であることを特徴とする付記1に記載の酸素発生電極。
前記導電層に含まれるスズ酸塩はn型半導体であり、
前記触媒層に含まれる酸化物はp型半導体であることを特徴とする付記1又は2に記載の酸素発生電極。
前記導電層は、Ba1-xLaxSnO3、BaSn1-xSbxO3、Sr1-xLaxSnO3、又はSrSn1-xSbxO3(0<x<1)のいずれかを含むことを特徴とする付記1乃至3のいずれか1項に記載の酸素発生電極。
前記触媒層は、Co、Fe若しくはNi又はこれらの任意の組み合わせを含むことを特徴とする付記1乃至4のいずれか1項に記載の酸素発生電極。
前記光吸収層はBiFeO3又はLaFeO3を含むことを特徴とする付記1乃至5のいずれか1項に記載の酸素発生電極。
前記導電層下の基板を有することを特徴とする付記1乃至6のいずれか1項に記載の酸素発生電極。
前記基板のバンドギャップは3eV以上であることを特徴とする付記7に記載の酸素発生電極。
前記基板は、SrTiO3、(La0.3Sr0.7)(Al0.65Ta0.35)O3、LaAlO3、MgO、NdGaO3、又はDyScO3のいずれかを含むことを特徴とする付記7又は8に記載の酸素発生電極。
電解質水溶液と、
前記電解質水溶液に前記触媒層が接する付記1乃至9のいずれか1項に記載の酸素発生電極と、
前記電解質水溶液中のカソード電極と、
を有することを特徴とする酸素発生装置。
11:基板
12:導電層
13:光吸収層
14:触媒層
15:コンタクト層
21:酸素発生装置
22:カソード電極
23:槽
25:電解質水溶液
26:配線
Claims (5)
- LSATの基板と、
前記基板上のBLSOの導電層と、
前記導電層上のBFOの光吸収層と、
前記光吸収層上の酸素発生反応のLSCOの触媒層と、
を有し、
前記導電層は、不純物を含んで縮退しており、
前記光吸収層は前記導電層にタイプIIのヘテロ接合をしており、
前記触媒層は、不純物を含んで縮退しており、
前記触媒層の価電子帯の上端は前記光吸収層の価電子帯の上端より高いことを特徴とする酸素発生電極。 - 前記光吸収層のバンドギャップは1eV以上3eV以下であることを特徴とする請求項1に記載の酸素発生電極。
- 前記導電層に含まれるスズ酸塩はn型半導体であり、
前記触媒層に含まれる酸化物はp型半導体であることを特徴とする請求項1又は2に記載の酸素発生電極。 - 前記基板のバンドギャップは3eV以上であることを特徴とする請求項1乃至3のいずれか1項に記載の酸素発生電極。
- 電解質水溶液と、
前記電解質水溶液に前記触媒層が接する請求項1乃至4のいずれか1項に記載の酸素発生電極と、
前記電解質水溶液中のカソード電極と、
を有することを特徴とする酸素発生装置。
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JP2017127173A JP6880404B2 (ja) | 2017-06-29 | 2017-06-29 | 酸素発生電極及び酸素発生装置 |
US16/017,282 US11087930B2 (en) | 2017-06-29 | 2018-06-25 | Oxygen generation apparatus |
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