KR20170004413A - 연료전지용 막-전극 복합체 및 그 제조방법 - Google Patents
연료전지용 막-전극 복합체 및 그 제조방법 Download PDFInfo
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- KR20170004413A KR20170004413A KR1020150094728A KR20150094728A KR20170004413A KR 20170004413 A KR20170004413 A KR 20170004413A KR 1020150094728 A KR1020150094728 A KR 1020150094728A KR 20150094728 A KR20150094728 A KR 20150094728A KR 20170004413 A KR20170004413 A KR 20170004413A
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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
- 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
-
- 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
- H01M8/1016—Fuel cells with solid electrolytes characterised by the electrolyte material
- H01M8/1018—Polymeric electrolyte materials
- H01M8/1039—Polymeric electrolyte materials halogenated, e.g. sulfonated polyvinylidene fluorides
-
- 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
-
- 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
-
- Y02E60/521—
-
- 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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- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Fuel Cell (AREA)
Abstract
Description
도 2는 실시예 연료전지용 막-전극 복합체에 포함된 전해질막의 구조를 개략적으로 나타낸 것이다.
구분 | 전극의 박리여부 |
실시예1 | 3회 이상의 수축팽창시에도 박리되지 않음 |
비교예1 | 1회의 수축팽창만으로 박리됨 |
구분 | 열화율 |
실시예2 | 0.7% |
비교예2 | 1.9% |
구분 | 전해질막 | 산소전극(cathode) | 연료전극(anode) |
실시예2 | 83° | 142° | 133° |
비교예2 | 112° | 155° | 143° |
2: 계면
3: 전해질막
4: 이온 전도성 고분자
5: 이온 전도성 고분자가 함침된 e-PTFE
Claims (19)
- 전해질막; 및
상기 전해질막의 양면에 결합한 전극;을 포함하고,
상기 결합은 전해질막과 전극 사이에 형성된 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자, 또는 전극이나 전해질막 표면에 분산된 친수성 작용기를 매개로 이루어진, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
상기 전해질막의 유리전이온도가 상기 이온 전도성 고분자의 유리전이온도보다 높은 값을 갖는, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
하기 일반식1로 표시되는 유리전이온도 차이가 5℃ 이상인, 연료전지용 막-전극 복합체:
[일반식1]
유리전이온도 차이(℃) = 전해질막의 유리전이온도 - 이온 전도성 고분자의 유리전이온도.
- 제1항에 있어서,
상기 이온 전도성 고분자의 당량이 상기 전해질막의 당량보다 큰 값을 갖는, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
하기 일반식2로 표시되는 당량 차이가 50 이상인, 연료전지용 막-전극 복합체:
[일반식2]
당량 차이 = 이온 전도성 고분자의 당량 - 전해질막의 당량.
- 제1항에 있어서,
상기 이온 전도성 고분자는 할로겐으로 치환된 지방족 사슬 중합체 및 친수성 작용기를 포함한 화합물을 포함하는, 연료전지용 막-전극 복합체.
- 제6항에 있어서,
상기 할로겐으로 치환된 지방족 사슬 중합체는 할로겐으로 치환된 알콕시 작용기로 그라프트된, 연료전지용 막-전극 복합체.
- 제6항에 있어서,
상기 친수성 작용기는 히드록시기, 에폭시기, 설포기, 카보닐기 및 카르복실기로 이루어진 군에서 선택된 1종 이상의 작용기를 포함하는, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
상기 이온 전도성 고분자는 10 ㎚ 내지 5 ㎛의 두께를 갖는, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
상기 친수성 작용기는 히드록시기, 에폭시기, 설포기, 카보닐기 및 카르복실기로 이루어진 군에서 선택된 1종 이상의 작용기를 포함하는, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
상기 친수성 작용기가 분산된 전해질막의 접촉각이 90° 미만인, 연료전지용 막-전극 복합체.
- 제1항에 있어서,
상기 친수성 작용기가 분산된 전극의 접촉각이 150° 미만인, 연료전지용 막-전극 복합체.
- 전해질막 또는 전극의 적어도 일면에 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자 또는 친수성 작용기를 형성하는 단계; 및
상기 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자 또는 친수성 작용기를 매개로 전해질막의 양면에 전극을 결합하는 단계;를 포함하는, 연료전지용 막-전극 복합체 제조방법.
- 제13항에 있어서,
상기 전해질막 또는 전극의 적어도 일면에 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자를 형성하는 단계는,
상기 전해질막 또는 전극의 적어도 일면에 이온 전도성 고분자 또는 이온 전도성 단량체를 도포하는 단계를 포함하는, 연료전지용 막-전극 복합체 제조방법.
- 제14항에 있어서,
상기 이온 전도성 단량체는 친수성 작용기를 포함한 유기 화합물을 포함하는, 연료전지용 막-전극 복합체 제조방법.
- 제15항에 있어서,
상기 친수성 작용기를 포함한 유기 화합물은 방향족 설폰산 화합물 또는 지방족 설폰산 화합물을 포함하는, 연료전지용 막-전극 복합체 제조방법.
- 제13항에 있어서,
상기 전해질막 또는 전극의 적어도 일면에 친수성 작용기를 형성하는 단계는,
상기 전해질막 또는 전극 표면을 산화시키는 단계를 포함하는, 연료전지용 막-전극 복합체 제조방법.
- 제13항에 있어서,
상기 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자 또는 친수성 작용기를 매개로 전해질막의 양면에 전극을 결합하는 단계는,
50℃ 내지 200℃의 온도에서 진행되는, 연료전지용 막-전극 복합체 제조방법.
- 제13항에 있어서,
상기 200 ℃ 이하의 유리전이온도를 갖는 이온 전도성 고분자 또는 친수성 작용기를 매개로 전해질막의 양면에 전극을 결합하는 단계는,
1 kgf/㎠ 내지 200 kgf/㎠의 압력에서 진행되는, 연료전지용 막-전극 복합체 제조방법.
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Cited By (2)
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KR20190081380A (ko) | 2017-12-29 | 2019-07-09 | 현대자동차주식회사 | 연료전지용 막전극접합체의 제조방법 |
KR20200137803A (ko) * | 2019-05-31 | 2020-12-09 | 한국에너지기술연구원 | 막-전극 접합체의 제조방법, 막-전극 접합체 및 연료전지 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20190081380A (ko) | 2017-12-29 | 2019-07-09 | 현대자동차주식회사 | 연료전지용 막전극접합체의 제조방법 |
US10910660B2 (en) | 2017-12-29 | 2021-02-02 | Hyundai Motor Company | Method of manufacturing membrane-electrode assembly for fuel cells |
KR20200137803A (ko) * | 2019-05-31 | 2020-12-09 | 한국에너지기술연구원 | 막-전극 접합체의 제조방법, 막-전극 접합체 및 연료전지 |
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