JP6514713B2 - 燃料電池のための触媒層及びそのような触媒層の製造方法 - Google Patents
燃料電池のための触媒層及びそのような触媒層の製造方法 Download PDFInfo
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8605—Porous electrodes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/8663—Selection of inactive substances as ingredients for catalytic active masses, e.g. binders, fillers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/8807—Gas diffusion layers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8803—Supports for the deposition of the catalytic active composition
- H01M4/881—Electrolytic membranes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/86—Inert electrodes with catalytic activity, e.g. for fuel cells
- H01M4/88—Processes of manufacture
- H01M4/8825—Methods for deposition of the catalytic active composition
- H01M4/8828—Coating with slurry or ink
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- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M8/1004—Fuel cells with solid electrolytes characterised by membrane-electrode assemblies [MEA]
-
- 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
- H01M8/10—Fuel cells with solid electrolytes
- H01M2008/1095—Fuel cells with polymeric electrolytes
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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
- Y02E60/50—Fuel cells
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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
- 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
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- Manufacturing & Machinery (AREA)
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- Fuel Cell (AREA)
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Description
−触媒作用成分、任意に、及び該触媒作用成分が上に担持されて存在している多孔質担体を含有する触媒材料を含む触媒インクを提供する工程、及び
−該触媒インクを、ポリマー電解質膜及び/又はガス拡散層から選ばれた支持体上に塗工する工程。
本発明の特徴は次の通りである。
1. 触媒作用成分(24)、任意に、及び該触媒作用成分(24)が上に担持されて存在している多孔質担体(23)を含有する触媒材料(22)を含む燃料電池のための触媒層(20)であって、前記触媒層(20)が、炭素ベースのメソ多孔性粒子(21)をさらに有することを特徴とする、上記の触媒層(20)。
2. 前記触媒作用成分(24)が、前記メソ多孔性粒子(21)上に担持されて存在していないことを特徴とする、上記の特徴1に記載の触媒層(20)。
3. 前記粒子(21)が、2〜20nmの範囲の平均孔径を有することを特徴とする、上記の特徴1に記載の触媒層(20)。
4. 前記粒子(21)が、少なくとも2ml/gの細孔容積を有することを特徴とする、上記の特徴1に記載の触媒層(20)。
5. 前記粒子(21)が、最大で1μmの平均寸法を有することを特徴とする、上記の特徴1に記載の触媒層(20)。
6. 前記触媒層(20)が、二酸化ケイ素及び/又は炭素からなる貯水性粒子をさらに含むことを特徴とする、上記の特徴1に記載の触媒層(20)。
7. 前記触媒層(20)が、1平方メートル当たり0.5g〜5g(g/m 2 )の平均含有量の前記粒子(21)を有することを特徴とする、上記の特徴1に記載の触媒層(20)。
8. 上記の特徴1〜7のいずれか一つに記載の燃料電池のための触媒層(20)を製造する方法であり、次の工程、
−触媒作用成分(24)、任意に、及び該触媒作用成分(24)が上に担持されて存在している多孔質担体(23)を含有する触媒材料(22)並びに炭素ベースのメソ多孔性粒子(21)を含む触媒インクを提供する工程、及び
−該触媒インクを、ポリマー電解質膜(15)及び/又はガス拡散層上に塗工する工程、を含む、上記の方法。
1 膜
2 電極
3 ガス拡散層-GDL
4 フローフィールド
5 双極板-BPP
6 膜−電極ユニット-MEA
10 触媒コーティング支持体
15 支持体/ポリマー電解質膜
20 触媒層
21 粒子
22 触媒材
23 担体材料
24 触媒活性物質
Claims (7)
- 触媒作用成分(24)及び該触媒作用成分(24)が上に担持されて存在している多孔質担体(23)を含有する触媒材料(22)を含む燃料電池のための触媒層(20)であって、前記触媒層(20)が、炭素を含むか又はそれからなるメソ多孔性粒子(21)をさらに有し、
その際、前記触媒作用成分(24)が、前記メソ多孔性粒子(21)上に担持されて存在していないことを特徴とする、上記の触媒層(20)。 - 前記粒子(21)が、2〜20nmの範囲の平均孔径を有することを特徴とする、請求項1に記載の触媒層(20)。
- 前記粒子(21)が、少なくとも2ml/gの細孔容積を有することを特徴とする、請求項1に記載の触媒層(20)。
- 前記粒子(21)が、最大で1μmの平均寸法を有することを特徴とする、請求項1に記載の触媒層(20)。
- 前記触媒層(20)が、二酸化ケイ素及び/又は炭素からなる貯水性粒子をさらに含むことを特徴とする、請求項1に記載の触媒層(20)。
- 前記触媒層(20)が、1平方メートル当たり0.5g〜5g(g/m2)の平均含有量の前記粒子(21)を有することを特徴とする、請求項1に記載の触媒層(20)。
- 請求項1〜6のいずれか一つに記載の燃料電池のための触媒層(20)を製造する方法であり、次の工程、
−触媒作用成分(24)及び該触媒作用成分(24)が上に担持されて存在している多孔質担体(23)を含有する触媒材料(22)並びに炭素を含むか又はそれからなるメソ多孔性粒子(21)を含む触媒インクを提供する工程、及び
−該触媒インクを、ポリマー電解質膜(15)及び/又はガス拡散層上に塗工する工程、を含む、上記の方法。
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