KR102079859B1 - 멤브레인 전극 어셈블리 제조 공정 - Google Patents
멤브레인 전극 어셈블리 제조 공정 Download PDFInfo
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Abstract
Description
도 2는 개시된 방법의 예시적인 단계의 개략도이다.
도 3은 개시된 방법의 예시적인 단계의 개략도이다.
도 4는 개시된 방법의 예시적인 단계의 개략도이다.
도 5는 통기성 백커(air-permeable backer)의 예시적인 구성이다.
도 6은 전극에 인접해 있는 보호 이오노머층의 예시적인 구성의 주사 전자 현미경 이미지이다.
도 7은 데칼(decal) 라미네이션 공정을 사용하여 제조된 멤브레인 전극 어셈블리들(X1, X2로 라벨 표시됨)을 갖는 전지들 및 본원에 기술된 방법에 따라 제조된 멤브레인 전극 어셈블리들(1, 2, 3으로 반복 라벨 표시됨)을 갖는 전지들에 대해 측정된 연료 전지 분극 곡선들을 도시한다.
도 8은 약 30wt%보다 큰 농도의 수용성 알코올의 사용에 기인한 매크로 스케일(macro-scale) 코팅 레티큘레이션(reticulation)을 도시한다.
도 9는 전극 공극 내로의 이오노머 코팅의 침투를 도시한다.
도 10은 충분히 통기성이 아닌 기판 상의 보호 이오노머 코팅에서의 결함들을 나타내며, 이것은 전극을 후속 코팅 단계에 노출시킨다.
Claims (35)
- 멤브레인 전극 어셈블리를 위한 컴포넌트를 제조하는 방법에 있어서,
(a) 통기성 백커(air-permeable backer)를 제공하는 단계;
(b) 상기 통기성 백커 상에 전극을 퇴적하는 단계;
(c) 상기 전극 상에 펜탄올, 헥산올 및 2-에틸 헥산올로부터 선택된 불수용성 알코올 및 이오노머(ionomer)를 포함하는 수성 습윤층(wet layer)을 퇴적하는 단계;
(d) 보호 이오노머층을 형성하기 위해 상기 습윤층을 건조시키는 단계; 및
(e) 상기 습윤층을 건조시키는 단계 이후에, 상기 보호 이오노머층 상에 양성자 도전 복합 습윤층을 퇴적하는 단계
를 포함하는 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 통기성 백커는 박리(release) 특성을 갖는 팽창된 중합체를 포함한 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제2항에 있어서,
상기 팽창된 중합체는 팽창된 폴리테트라플루오로에틸렌(expanded polytetrafluoroethylene; ePTFE)이며, 상기 팽창된 중합체는 ePTFE의 16g/㎡ 미만의 면적 당 질량을 갖는 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 삭제
- 제2항에 있어서,
상기 팽창된 중합체는 팽창된 폴리테트라플루오로에틸렌(expanded polytetrafluoroethylene; ePTFE)이며, 상기 통기성 백커는, 상기 전극이 상기 통기성 백커로부터 벗겨질 때 상기 ePTFE의 응집 파괴를 방지하기에 충분한 Z 강도를 갖는 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 통기성 백커는 기체 확산층인 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 통기성 백커에 패브릭(fabric)을 결합시키는 단계
를 더 포함하는 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제7항에 있어서,
상기 패브릭을 불연속인 패턴의 접착제로 상기 통기성 백커에 접합하는 단계
를 더 포함하는 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 수성 습윤층은 60wt% 초과의 물을 포함한 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 수성 습윤층은 5wt% 미만의 상기 불수용성 알코올을 포함한 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 수성 습윤층은 10wt% 미만의 양으로 수용성 알코올을 더 포함하는 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 수성 습윤층은 5wt% 미만의 양으로 존재하는 글리콜 에테르 또는 이소프로필 알코올을 포함한 수용성 알코올을 포함한 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 양성자 도전 복합 습윤층 상에 이오노머층을 퇴적하고, 상기 이오노머층 상에 또다른 전극을 퇴적하는 단계
를 더 포함하는 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 제1항에 있어서,
상기 보호 이오노머층은 0.1미크론 내지 25미크론의 두께를 갖는 것인, 멤브레인 전극 어셈블리를 위한 컴포넌트 제조 방법. - 삭제
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PCT/US2016/017126 WO2016130529A1 (en) | 2015-02-09 | 2016-02-09 | Membrane electrode assembly manufacturing process |
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JP6669763B2 (ja) | 2020-03-18 |
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