KR102175009B1 - 연료 전지용 막-전극 어셈블리, 이의 제조 방법, 그리고 이를 포함하는 연료 전지 시스템 - Google Patents
연료 전지용 막-전극 어셈블리, 이의 제조 방법, 그리고 이를 포함하는 연료 전지 시스템 Download PDFInfo
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- KR102175009B1 KR102175009B1 KR1020160121831A KR20160121831A KR102175009B1 KR 102175009 B1 KR102175009 B1 KR 102175009B1 KR 1020160121831 A KR1020160121831 A KR 1020160121831A KR 20160121831 A KR20160121831 A KR 20160121831A KR 102175009 B1 KR102175009 B1 KR 102175009B1
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- porous support
- membrane
- electrode
- fuel cell
- catalyst layer
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Abstract
상기 연료 전지용 막-전극 어셈블리의 상기 전극은 자립형 전극이며, 상기 전극은 고분자 전해질 막과의 접합성이 우수하여, 연료 전지 운전 시에 상기 전극이 고분자 전해질 막에서 탈락되어 성능이 저하되는 것을 방지할 수 있고, 특히 가혹한 운전 환경에서도 탈락되지 않기 때문에 높은 내구성을 기대할 수 있으며, 상기 전극을 이용하면 데칼 필름을 사용하지 않고 단순한 공정으로 막-전극 어셈블리를 제조할 수 있고, 원가를 절감할 수 있다.
Description
도 3은 본 발명의 다른 일 실시예에 따른 막-전극 어셈블리를 모식적으로 나타내는 단면도이다.
도 4는 본 발명의 또 다른 일 실시예에 따른 연료전지 시스템의 전체적인 구성을 도시한 개략도이다.
도 5는 본 발명의 제조예 1에서 제조된 전극의 측면을 주사 전자 현미경(SEM)으로 관찰한 사진이다.
도 6은 본 발명의 실험예 1에서 제조된 막-전극 어셈블리의 접합성을 평가한 결과에 대한 사진이다.
10-1: 캐소드 전극 10-2: 애노드 전극
11: 다공성 지지체
12: 촉매층
13: 제 1 영역
14: 제 2 영역
20: 고분자 전해질 막
50: 막-전극 어셈블리
100: 연료 전지 시스템
110: 연료 공급부
120: 개질부 130: 스택
133a1: 제1 공급관 133a2: 제2 공급관
133a3: 제1 배출관 133a4: 제2 배출관
140: 산화제 공급부
Claims (20)
- 서로 대향하여 위치하는 애노드 전극 및 캐소드 전극; 및
상기 애노드 전극 및 상기 캐소드 전극 사이에 위치하는 고분자 전해질 막을 포함하며,
상기 애노드 전극 및 상기 캐소드 전극 중 적어도 어느 하나는 다공성 지지체 및 상기 다공성 지지체 일면 위에 위치하는 촉매층을 포함하고,
상기 촉매층은 촉매 및 바인더 수지를 포함하고,
상기 다공성 지지체는,
상기 촉매층과 접하며 상기 촉매층의 상기 촉매 및 상기 바인더 수지가 침투해 있는 제1 영역; 및
상기 고분자 전해질 막에 접합되어 있으며 상기 촉매층의 상기 바인더 수지만 침투해 있고 상기 촉매는 침투해 있지 않는 제2 영역
을 포함하며,
상기 촉매의 평균 입경이 상기 다공성 지지체의 기공의 평균 크기보다 크고,
상기 다공성 지지체의 기공의 평균 크기가 상기 바인더 수지의 평균 입경보다 큰,
연료 전지용 막-전극 어셈블리. - 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 삭제
- 제 1 항에 있어서,
상기 촉매층과 상기 제 1 영역을 합한 두께와 상기 제 2 영역의 두께비는 1:1 내지 10:1인 것인 연료 전지용 막-전극 어셈블리. - 제 1 항에 있어서,
상기 촉매층 또는 상기 제 1 영역에서 상기 바인더 수지의 함량은 상기 촉매층 또는 상기 제 1 영역 전체 중량에 대하여 20 내지 40 중량%인 것인 연료 전지용 막-전극 어셈블리. - 제 1 항에 있어서,
상기 다공성 지지체의 기공의 평균 크기는 300 nm 내지 100 nm이고,
상기 촉매의 평균 입경은 450 nm 내지 250 nm이고,
상기 바인더 수지의 평균 입경은 250 nm 내지 50 nm인 것인 연료 전지용 막-전극 어셈블리. - 제 1 항에 있어서,
상기 다공성 지지체는 발포 폴리테트라플루오로에틸렌 폴리머(e-PTFE)를 포함하는 것인 연료 전지용 막-전극 어셈블리. - 삭제
- 제 1 항에 있어서,
상기 다공성 지지체는 나노 섬유들이 다수의 기공을 포함하는 부직포 형태로 집적된 나노웹을 포함하는 것인 연료 전지용 막-전극 어셈블리. - 제 14 항에 있어서,
상기 나노 섬유는 나일론, 폴리이미드, 폴리아라미드, 폴리에테르이미드, 폴리아크릴로니트릴, 폴리아닐린, 폴리에틸렌옥사이드, 폴리에틸렌나프탈레이트, 폴리부틸렌테레프탈레이트, 스티렌 부타디엔 고무, 폴리스티렌, 폴리비닐 클로라이드, 폴리비닐알코올, 폴리비닐리덴 플루오라이드, 폴리비닐 부틸렌, 폴리우레탄, 폴리벤즈옥사졸, 폴리벤즈이미다졸, 폴리아미드이미드, 폴리에틸렌테레프탈레이트, 폴리에틸렌, 폴리프로필렌, 이들의 공중합체, 및 이들의 혼합물로 이루어진 군에서 선택되는 어느 하나인 것인 연료 전지용 막-전극 어셈블리. - 제 14 항에 있어서,
상기 나노웹은 전기 방사로 제조된 것인 연료 전지용 막-전극 어셈블리. - 촉매 및 바인더 수지를 포함하는 촉매층 형성용 조성물을 제조하는 단계;
상기 바인더 수지의 평균 입경보다는 크지만 상기 촉매의 평균 입경보다는 작은 기공 평균 크기를 갖는 다공성 지지체의 일면에 상기 촉매층 형성용 조성물을 도포함으로써, 상기 다공성 지지체의 상기 일면 상에 촉매층을 형성하고, 상기 촉매층과 접하는 상기 다공성 지지체의 제1 영역에 상기 촉매와 상기 바인더 수지를 침투시키고, 상기 다공성 지지체의 나머지 영역인 제2 영역에는 상기 바인더 수지만을 침투시키는 단계; 및
이어서, 상기 다공성 지지체를 고분자 전해질 막에 접합시키되, 상기 다공성 지지체의 상기 촉매층이 위치하지 않는 타면이 상기 고분자 전해질 막을 향하도록 정렬한 후 접합시키는 단계
를 포함하는 연료 전지용 막-전극 어셈블리의 제조 방법. - 삭제
- 삭제
- 연료와 물이 혼합된 혼합 연료를 공급하는 연료 공급부;
상기 혼합 연료를 개질하여 수소 가스를 포함하는 개질 가스를 발생시키는 개질부;
상기 제 1 항에 따른 막-전극 어셈블리를 포함하며, 개질부로부터 공급되는 수소 가스를 포함하는 개질 가스가 산화제와 전기 화학적인 반응을 일으켜 전기 에너지를 발생시키는 스택; 및
산화제를 상기 개질부 및 스택으로 공급하는 산화제 공급부를 포함하는 연료전지 시스템.
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| PCT/KR2016/010616 WO2017052248A1 (ko) | 2015-09-24 | 2016-09-23 | 연료 전지용 막-전극 어셈블리, 이의 제조 방법, 그리고 이를 포함하는 연료 전지 시스템 |
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| CN102456891B (zh) | 2010-10-29 | 2014-07-23 | 中国科学院大连化学物理研究所 | 一种具有梯度孔结构的气体扩散层及其制备和应用 |
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2016
- 2016-09-23 CN CN201680053938.7A patent/CN108140846B/zh active Active
- 2016-09-23 EP EP16848973.0A patent/EP3355395A4/en not_active Withdrawn
- 2016-09-23 KR KR1020160121831A patent/KR102175009B1/ko active Active
- 2016-09-23 US US15/760,287 patent/US10868311B2/en active Active
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| JP2005183263A (ja) * | 2003-12-22 | 2005-07-07 | Nissan Motor Co Ltd | 多孔質構造体 |
| KR100813245B1 (ko) * | 2006-06-20 | 2008-03-13 | 삼성에스디아이 주식회사 | 연료 전지 발전 시스템 |
| JP2008004402A (ja) * | 2006-06-22 | 2008-01-10 | Nitto Denko Corp | ダイレクトメタノール型燃料電池用アノード電極及びそれを用いたダイレクトメタノール型燃料電池 |
| JP2012243656A (ja) | 2011-05-23 | 2012-12-10 | Toyota Motor Corp | 膜電極接合体の製造方法、および、膜電極接合体 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108140846B (zh) | 2021-07-16 |
| EP3355395A1 (en) | 2018-08-01 |
| CN108140846A (zh) | 2018-06-08 |
| US10868311B2 (en) | 2020-12-15 |
| KR20170036632A (ko) | 2017-04-03 |
| EP3355395A4 (en) | 2019-05-01 |
| US20180269491A1 (en) | 2018-09-20 |
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