KR102829803B1 - 전자절연층이 도입된 막-전극 접합체의 전해질막 및 이의 제조방법 - Google Patents
전자절연층이 도입된 막-전극 접합체의 전해질막 및 이의 제조방법 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 전해질막을 간략히 도시한 단면도이다.
도 3은 상기 촉매 복합체를 간략히 도시한 단면도이다.
도 4는 본 발명의 다른 실시예에 따른 전해질막을 간략히 도시한 단면도이다.
도 5는 본 발명에 따른 막-전극 접합체의 전해질막의 제조방법을 도시한 흐름도이다.
10: 이온교환층 11: 강화층 12: 제1 이온교환층 13: 제2 이온교환층
20: 전자절연층
21: 촉매 복합체 211: 촉매 입자 212: 제1 이오노머
22: 제2 이오노머
2: 전극
Claims (14)
- 막-전극 접합체의 캐소드와 애노드 사이에 개재되는 전해질막으로,
이온교환층; 및
상기 이온교환층 상에 제공된 전자절연층을 포함하고,
상기 전자절연층은
촉매 입자 및 상기 촉매 입자의 표면의 전부에 코팅된 제1 이오노머를 포함하는 촉매 복합체; 및
상기 촉매 복합체가 분산되어 있는 고분자 매트릭스인 제2 이오노머를 포함하고,
상기 제1 이오노머는 상기 제2 이오노머에 비해 측쇄기가 짧은 고분자 물질을 포함하고,
상기 막-전극 접합체의 구동에서 수소 기체의 막-전극 접합체 적층방향 통과(크로스 오버)로 인한 라디칼 발생 시, 상기 제2 이오노머 대비 제1 이오노머의 열화는 후순위로 진행되는 것인 막-전극 접합체의 전해질막. - 제1항에 있어서,
상기 이온교환층은 다공성의 강화층; 상기 강화층의 일면 상에 제공된 제1 이온교환층; 및 상기 강화층의 타면 상에 제공된 제2 이온교환층을 포함하는 것인 막-전극 접합체의 전해질막. - 제1항에 있어서,
상기 이온교환층은 상기 제2 이오노머와 동일한 이온 교환 물질을 포함하는 것인 막-전극 접합체의 전해질막. - 제1항에 있어서,
상기 촉매 입자는 탄소 지지체에 촉매 금속이 담지된 것인 막-전극 접합체의 전해질막. - 제4항에 있어서,
상기 촉매 금속은 백금(Pt)을 포함하는 것인 막-전극 접합체의 전해질막. - 삭제
- 제1항에 있어서,
상기 제1 이오노머 및 제2 이오노머는 퍼플루오로술폰산(Perfluorosulfonic acid, PFSA)을 포함하는 것인 막-전극 접합체의 전해질막. - 제1항에 있어서,
상기 전자절연층은 촉매 입자를 0.5중량% 내지 5중량%로 포함하는 것인 막-전극 접합체의 전해질막. - 제1항에 따른 전해질막; 및
상기 전해질막의 양면에 제공된 한 쌍의 전극을 포함하는 것인 막-전극 접합체. - 막-전극 접합체의 캐소드와 애노드 사이에 개재되는 전해질막의 제조방법으로,
제1 이오노머 용액에 촉매 입자를 투입하고 분산시키는 단계;
촉매 입자가 분산된 결과물을 건조하여, 촉매 입자 표면의 전부에 코팅된 제1이오노머를 포함하는 촉매 복합체를 얻는 단계;
제2 이오노머 용액에 상기 촉매 복합체를 투입하고 분산시키는 단계; 및
촉매 복합체가 분산된 결과물을 이온교환층 상에 도포하고 건조하여 전자절연층을 형성하고 전해질막을 제조하는 단계를 포함하고,
상기 제1 이오노머 용액의 제1 이오노머는 상기 제2 이오노머 용액의 제2 이오노머에 비해 측쇄기가 짧은 고분자 물질을 포함하고,
상기 막-전극 접합체의 구동에서 수소 기체의 막-전극 접합체 적층방향 통과(크로스 오버)로 인한 라디칼 발생 시, 상기 제2 이오노머 대비 제1 이오노머의 열화는 후순위로 진행되는 막-전극 접합체의 전해질막의 제조방법. - 제10항에 있어서,
상기 전자절연층을 열처리하는 단계를 더 포함하는 막-전극 접합체의 전해질막의 제조방법. - 제10항에 있어서,
상기 촉매 입자가 분산된 결과물을 25℃ 내지 160℃에서 건조하는 것인 막-전극 접합체의 전해질막의 제조방법. - 제10항에 있어서,
상기 촉매 복합체가 분산된 결과물을 이온교환층 상에 도포하고 25℃ 내지 100℃의 온도에서 건조하여 전자절연층을 형성하는 것인 막-전극 접합체의 전해질막의 제조방법. - 제11항에 있어서,
상기 전자절연층을 160℃ 내지 200℃에서 열처리하는 것인 막-전극 접합체의 전해질막의 제조방법.
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| KR1020190036174A KR102829803B1 (ko) | 2019-03-28 | 2019-03-28 | 전자절연층이 도입된 막-전극 접합체의 전해질막 및 이의 제조방법 |
| DE102019218145.7A DE102019218145A1 (de) | 2019-03-28 | 2019-11-25 | Elektrolytmembran von membran-elektrode-anordnung mit elektronischer isolationsschicht und herstellungsverfahren davon |
| US16/694,222 US11967746B2 (en) | 2019-03-28 | 2019-11-25 | Electrolyte membrane of membrane-electrode assembly including electronic insulation layer and preparation method thereof |
| CN201911197200.XA CN111755728B (zh) | 2019-03-28 | 2019-11-29 | 膜-电极组件的包括电子绝缘层的电解质膜及其制备方法 |
| US18/613,629 US20240234773A1 (en) | 2019-03-28 | 2024-03-22 | Electrolyte membrane of membrane-electrode assembly including electronic insulation layer and preparation method thereof |
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| KR102298989B1 (ko) * | 2020-12-07 | 2021-09-06 | 현대자동차주식회사 | 이온 전도성이 높고 물 배출이 용이한 전해질막 및 이의 제조방법 |
| CN114420948A (zh) * | 2022-01-24 | 2022-04-29 | 一汽解放汽车有限公司 | 一种阴极催化层及其制备方法和应用 |
| KR20250060585A (ko) * | 2023-10-26 | 2025-05-07 | 한화솔루션 주식회사 | 이온 교환 막 및 이온 교환 막을 포함하는 전기화학 시스템 |
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| JP2003123777A (ja) * | 2001-10-19 | 2003-04-25 | Matsushita Electric Ind Co Ltd | 高分子電解質型燃料電池 |
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| US7989115B2 (en) * | 2007-12-14 | 2011-08-02 | Gore Enterprise Holdings, Inc. | Highly stable fuel cell membranes and methods of making them |
| GB0804185D0 (en) * | 2008-03-07 | 2008-04-16 | Johnson Matthey Plc | Ion-conducting membrane structures |
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2019
- 2019-03-28 KR KR1020190036174A patent/KR102829803B1/ko active Active
- 2019-11-25 DE DE102019218145.7A patent/DE102019218145A1/de active Pending
- 2019-11-25 US US16/694,222 patent/US11967746B2/en active Active
- 2019-11-29 CN CN201911197200.XA patent/CN111755728B/zh active Active
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| JP2017020107A (ja) | 2010-02-26 | 2017-01-26 | ジョンソン、マッセイ、フュエル、セルズ、リミテッドJohnson Matthey Fuel Cells Limited | メンブラン |
| US20130130133A1 (en) | 2011-11-17 | 2013-05-23 | GM Global Technology Operations LLC | Nanofiber Supported Catalysts As Membrane Additives For Improved Fuel Cell Durability |
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| DE102019218145A1 (de) | 2020-10-01 |
| US20200313216A1 (en) | 2020-10-01 |
| US11967746B2 (en) | 2024-04-23 |
| US20240234773A1 (en) | 2024-07-11 |
| CN111755728B (zh) | 2024-03-22 |
| KR20200114423A (ko) | 2020-10-07 |
| CN111755728A (zh) | 2020-10-09 |
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