JP2007224300A - 高分子膜とその製造方法及び燃料電池 - Google Patents
高分子膜とその製造方法及び燃料電池 Download PDFInfo
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Abstract
【解決手段】本発明によれば、スルホン化された細孔を有する多孔性高分子フィルムを含む高分子膜と、この高分子膜の製造方法、および、この高分子膜を採用した燃料電池が提供される。本発明に係る高分子膜は、簡便で経済的な方法で製造でき、イオン伝導性にすぐれ、燃料電池で発生するクロスオーバー現象を効果的に減少させることが可能である。
【選択図】図1
Description
多孔性高分子フィルムとして、平均直径約0.5μmを有し、細孔の総体積が多孔性高分子フィルム総体積の約70%であり、厚さ20μmのポリエチレンフィルム(Teklon社製)を準備した。次に、上記のポリエチレンフィルムを発煙硫酸(SO3 15%)及びジクロロエタンの体積比が1:1.5である60℃のスルホン化のための溶液中に3分間浸漬させた後、50%硫酸水溶液中に1分間常温でさらに浸漬させた。この結果物を脱イオン水で洗浄し、常温で12時間乾燥させることにより、本発明による高分子膜を製造した。
60℃のスルホン化のための溶液への浸漬時間を6分としたという点を除いては、実施例1と同じ方法により、本発明による高分子膜を製造した。
60℃のスルホン化のための溶液への浸漬時間を9分としたという点を除いては、実施例1と同じ方法により、本発明による高分子膜を製造した。
60℃のスルホン化のための溶液への浸漬時間を12分としたという点を除いては、実施例1と同じ方法により、本発明による高分子膜を製造した。
実施例2と同じ方法により、ポリエチレンフィルムを60℃のスルホン化のための溶液中に6分間浸漬させた後、これを80℃恒温槽で12時間乾燥させることにより、本発明による高分子膜を製造した。
実施例2と同じ方法で高分子膜を製造するが、60℃のスルホン化のための溶液中に6分間浸漬させた後でNafionTM溶液(質量分率17%)に1分間浸漬させ、この結果物を脱イオン水で洗浄することにより、高分子膜の両面にイオン伝導性物質層がコーティングされた本発明による高分子膜を製造した。
スルホン化のための溶液への浸漬において、浸漬温度及び時間を常温、19時間としたという点を除いては、実施例1と同じ方法により、比較例1による高分子膜を製造した。
一般に広く市販されている電解質膜であり、Nafion 117(DuPontTM)を使用した。
23 カソード拡散層
30 カソード
31 カソード触媒層
32 アノード
33 アノード触媒層
35 電解質膜
Claims (19)
- スルホン化された細孔を有する多孔性高分子フィルムを含むことを特徴とする、高分子膜。
- 前記多孔性高分子フィルムは、多孔性ポリオレフィンフィルムであることを特徴とする、請求項1に記載の高分子膜。
- 前記多孔性ポリオレフィンフィルムは、多孔性ポリエチレンフィルム、多孔性ポリプロピレンフィルムまたはこれらの混合フィルムであることを特徴とする、請求項2に記載の高分子膜。
- 前記多孔性高分子フィルムの細孔は、10nm〜10μmの平均直径を有し、
前記細孔の総面積は、前記多孔性高分子フィルムの総面積に対して10%〜90%である
ことを特徴とする、請求項1〜3のいずれかに記載の高分子膜。 - 前記高分子膜の厚さは、0.5μm〜2000μmであることを特徴とする、請求項1〜4のいずれかに記載の高分子膜。
- 前記スルホン化された細孔は、下記化学式1のアルカンスルホン酸基、化学式2のβ−スルホン基、化学式3もしくは化学式4のアルケンスルホン酸基、化学式5のγ−スルホン基、または、化学式6のδ−スルホン基を含むことを特徴とする、請求項1〜5のいずれかに記載の高分子膜。
- 前記高分子膜は、当該高分子膜の一面または両面に、イオン伝導性物質が更にコーティングされることを特徴とする、請求項1〜6のいずれかに記載の高分子膜。
- 前記イオン伝導性物質は、スルホン化高フッ化ポリマー、スルホン化ポリスルホン、スルホン化ポリスチレン、スルホン化ポリエーテルエーテルケトン、スルホン化ポリベンズイミダゾール、スルホン化ポリイミド及びスルホン化ポリホスファゼンからなる群から選択された少なくとも1つの物質であることを特徴とする、請求項7に記載の高分子膜。
- 多孔性高分子フィルムを準備する段階と、
前記多孔性高分子フィルムをスルホン化のための溶液に浸漬する段階と、
前記浸漬結果物を洗浄及び乾燥させることにより、高分子膜を製造する段階と、
を含むことを特徴とする、高分子膜の製造方法。 - 前記多孔性高分子フィルムは、多孔性ポリオレフィンフィルムであることを特徴とする、請求項9に記載の高分子膜の製造方法。
- 前記多孔性ポリオレフィンフィルムは、多孔性ポリエチレンフィルム、多孔性ポリプロピレンフィルムまたはその混合フィルムであることを特徴とする請求項10に記載の高分子膜の製造方法。
- 前記多孔性高分子フィルムの細孔は、10nm〜10μmの平均直径を有し、
前記細孔の総体積は、前記多孔性高分子フィルムの総体積に対して10%〜90%である
ことを特徴とする、請求項9〜11のいずれかに記載の高分子膜の製造方法。 - 前記スルホン化のための溶液は、90%以上の硫酸、発煙硫酸または塩化硫酸であることを特徴とする、請求項9〜12のいずれかに記載の高分子膜の製造方法。
- 前記スルホン化のための溶液は、ジクロロメタン、ジクロロエタン、クロロホルム及びこれらの混合物からなる群から選択された補助溶媒を更に含むことを特徴とする、請求項13に記載の高分子膜の製造方法。
- 前記補助溶媒と前記スルホン化のための溶液との混合比は、前記補助溶媒100質量部に対し、前記スルホン化のための溶液が10〜500質量部であることを特徴とする、請求項14に記載の高分子膜の製造方法。
- 前記スルホン化のための溶液への浸漬段階後に、硫酸水溶液に浸漬する段階を更に含むことを特徴とする、請求項9〜15のいずれかに記載の高分子膜の製造方法。
- 前記スルホン化のための溶液への浸漬段階または前記硫酸水溶液への浸漬段階後に、浸漬結果物の表面にイオン伝導性物質をコーティングする段階を更に含むことを特徴とする、請求項9〜16のいずれかに記載の高分子膜の製造方法。
- 前記硫酸水溶液は、30%〜50%濃度の硫酸水溶液であることを特徴とする、請求項16に記載の高分子膜の製造方法。
- カソードと、
アノードと、
前記カソードと前記アノードとの間に配設された請求項1〜8のいずれか1項に記載の高分子膜と、
を備えることを特徴とする、燃料電池。
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JP (1) | JP2007224300A (ja) |
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KR101394624B1 (ko) * | 2010-08-13 | 2014-05-14 | 에스케이이노베이션 주식회사 | 폴리올레핀계 미세다공막 기재의 공극이 보호된 다층 복합 다공막 및 그 제조방법 |
KR101582024B1 (ko) * | 2014-01-15 | 2015-12-31 | 주식회사 효성 | 곁가지에 술폰화기를 지닌 폴리올레핀케톤, 이를 이용한 수처리 분리막 및 연료전지용 고분자 전해질막 |
CN104530451B (zh) * | 2014-10-11 | 2017-05-03 | 江苏大学 | 一种织构化聚醚醚酮/聚酰亚胺复合薄膜的仿生制备方法 |
KR101639536B1 (ko) | 2015-12-21 | 2016-07-13 | 한국에너지기술연구원 | 강화복합막 및 이의 제조방법 |
CN111868986B (zh) * | 2018-02-28 | 2024-02-23 | 可隆工业株式会社 | 离子交换膜和包括它的储能装置 |
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CN101029140B (zh) | 2013-04-24 |
KR20070087454A (ko) | 2007-08-28 |
KR101312262B1 (ko) | 2013-09-25 |
CN101029140A (zh) | 2007-09-05 |
US20070196714A1 (en) | 2007-08-23 |
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