KR101392230B1 - 폴리머 바인더를 포함하는 막전극 어셈블리 및 이를 포함하는 알칼리 멤브레인 연료전지 - Google Patents
폴리머 바인더를 포함하는 막전극 어셈블리 및 이를 포함하는 알칼리 멤브레인 연료전지 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
- 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]
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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
- H01M4/8668—Binders
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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
- 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
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Abstract
본 발명에 따르면, 종래 고분자 연료전지의 문제점을 해결하고자 개발된 알칼리 연료전지에서 종종 관찰되는 열악한 내구성, 전해질막과 전극층의 접합 문제, 기계적 강도 문제 및 연속생산공정 적용의 어려움 등의 문제점을 효과적으로 해결할 수 있는 막전극 어셈블리 및 이를 포함하는 알칼리 멤브레인 연료전지를 제공할 수 있다.
Description
도 2는 본 발명에 따른 알칼리 멤브레인 연료전지에 대한 개략도이다.
도 3은 정전압 작동 12시간 후에 캐소드 촉매층 표면을 관찰한 사진이다 (도 3a: 광학 이미지; 도 3b: SEM 이미지).
도 4는 각기 다른 이오노머 함량을 갖는 막전극 어셈블리에 있어서, H2/공기 (CO2 무함유) 성능 곡선을 도시한 그래프이다 (모든 MEA에서 애노드 로딩은 0.5 mgPtcm-2, 캐소드 로딩은 2.0 mg4020cm-2이고, 자체 제작된 세공충진 멤브레인과 상용 이오노머를 사용하였다).
도 5는 다공성 폴리에틸렌 재질의 세공충진 멤브레인을 사용한 경우에, 전지 성능에 대한 캐소드 촉매층 중의 폴리에틸렌 바인더 함량의 효과를 도시한 그래프이다.
도 6은 다공성 폴리에틸렌 재질의 세공충진 멤브레인을 사용한 경우에, 전지 성능에 대한 캐소드 촉매층 중의 폴리테트라플루오로에틸렌 바인더 함량의 효과를 도시한 그래프이다.
도 7은 다공성 폴리에틸렌 재질의 세공충진 멤브레인을 사용한 경우에 있어서, 각기 다른 함량의 바인더를 첨가하고, 전지로부터 얻어진 Eapp = 0.6 VSHE에서 임피던스 스펙트럼의 Nyquist 플롯을 도시한 그래프이다 (도 7a: 폴리에틸렌 바인더; 도 7b: 폴리테트라플루오로에틸렌 바인더).
도 8은 다공성 폴리에틸렌 재질의 세공충진 멤브레인을 사용한 경우에 있어서, 각기 다른 함량의 바인더를 첨가하고, 전지 내구성을 측정한 그래프이다 (도 8a: 폴리에틸렌 바인더; 도 8b: 폴리테트라플루오로에틸렌 바인더).
도 9는 다공성 폴리에틸렌 재질의 세공충진 멤브레인을 사용한 경우에 있어서, 데칼법에 의해 촉매층을 세공충진 멤브레인으로 전사한 결과를 나타낸 사진이다 (도 9a: 폴리에틸렌 바인더 20중량% 첨가; 도 9b: 폴리테트라플루오로에틸렌 바인더 20중량% 첨가).
Claims (11)
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- 캐소드 촉매층;
애노드 촉매층; 및
상기 캐소드 촉매층 및 애노드 촉매층 사이에 위치한 세공충진 멤브레인을 포함하는 막전극 어셈블리로서, 상기 촉매층은 상기 세공충진 멤브레인의 기재와 동일한 재질의 폴리머 바인더를 상기 촉매층 100 중량부를 기준으로 5 중량부 내지 40 중량부의 함량으로 포함하는 막전극 어셈블리와,
기체확산층 및 바이폴라 플레이트를 포함하는 알칼리 멤브레인 연료전지. - 제7항에 있어서, 상기 폴리머 바인더는 폴리올레핀 재질인 것을 특징으로 하는 알칼리 멤브레인 연료전지.
- 제7항에 있어서, 상기 폴리머 바인더는 폴리에틸렌, 폴리테트라플루오로에틸렌, 폴리이미드, 폴리아미드이미드, 폴리프로필렌 및 폴리플루오린화비닐리덴으로 이루어진 군으로부터 선택된 하나 이상의 재질인 것을 특징으로 하는 알칼리 멤브레인 연료전지.
- 제7항에 있어서, 상기 촉매층 100 중량부를 기준으로 30 중량부 내지 70 중량부의 촉매를 포함하는 것을 특징으로 하는 알칼리 멤브레인 연료전지.
- 제10항에 있어서, 상기 촉매는 백금, 팔라듐, 은 및 구리-철 합금으로 이루어진 군으로부터 선택된 하나 이상의 물질인 것을 특징으로 하는 알칼리 멤브레인 연료전지.
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KR20210125238A (ko) | 2020-04-08 | 2021-10-18 | 한국과학기술연구원 | 고체 알칼리 연료전지의 전극 바인더용 스타이렌계 공중합체 및 이를 포함하는 막전극 접합체 |
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CN113711401B (zh) * | 2018-11-30 | 2023-09-01 | 燃料电池能有限公司 | 用于熔融碳酸盐燃料电池的燃料电池分级 |
US11476486B2 (en) | 2018-11-30 | 2022-10-18 | ExxonMobil Technology and Engineering Company | Fuel cell staging for molten carbonate fuel cells |
WO2020112812A1 (en) | 2018-11-30 | 2020-06-04 | Exxonmobil Research And Engineering Company | Operation of molten carbonate fuel cells with enhanced co 2 utilization |
KR102610181B1 (ko) | 2018-11-30 | 2023-12-04 | 퓨얼셀 에너지, 인크 | 향상된 co2 이용률로 작동되는 연료 전지를 위한 촉매 패턴의 개질 |
CN110336042B (zh) * | 2019-07-05 | 2023-06-30 | 中国科学院重庆绿色智能技术研究院 | 一种气体扩散阴极及其制备方法与应用 |
WO2021107935A1 (en) | 2019-11-26 | 2021-06-03 | Exxonmobil Research And Engineering Company | Operation of molten carbonate fuel cells with high electrolyte fill level |
US11978931B2 (en) | 2021-02-11 | 2024-05-07 | ExxonMobil Technology and Engineering Company | Flow baffle for molten carbonate fuel cell |
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KR20090054614A (ko) * | 2007-11-27 | 2009-06-01 | 한양대학교 산학협력단 | 맞춤형 비불소계 촉매 바인더, 막-전극 어셈블리 및 이를포함하는 연료전지 |
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KR20210125238A (ko) | 2020-04-08 | 2021-10-18 | 한국과학기술연구원 | 고체 알칼리 연료전지의 전극 바인더용 스타이렌계 공중합체 및 이를 포함하는 막전극 접합체 |
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