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Membraneless Hydrogen Peroxide Fuel Cells as a Promising Clean Energy Source
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燃料電池アプリケーションのためのアロマティックポリエーターをベースにしたチューニングされたポリマー電解質膜
Kenji Miyatake1, Yohei Chikashige, Eiji Higuchi
1Clean Energy Research Center, University of Yamanashi, 4 Takeda, Kofu 400-8510, Japan. m-watanabe@yamanashi.ac.jp
Journal of the American Chemical Society
|March 14, 2007
まとめ
新しいポリエチレンエーテル硫イオノマーは,ポリマー電解質膜燃料電池 (PEMFC) のための高プロトン伝導性と安定性を提供します. これらの膜は,低湿度の厳しい条件下でも,優れた性能を示しています.
科学分野:
- ポリマーサイエンスの科学
- 電気化学 電気化学について
- マテリアルサイエンス 材料科学
背景:
- ポリアリレンエーテルスルフォンベースのイオノマーは,ポリマー電解質膜燃料電池 (PEMFC) にとって極めて重要です.
- 分子構造の最適化は,高陽子伝導性と材料の安定性を達成するための鍵です.
研究 の 目的:
- PEMFCアプリケーションのための新しいイオノマーの合成と最適化.
- 陽子の伝導性,化学的,機械的,次元的安定性を評価する.
- ナフィオンなどの既定のフルオリン膜と比較して性能を比較します.
主な方法:
- 硫黄フルオレニル基を持つポリアリレンエーテル・スルフォン基イオノマーの合成.
- メチルおよびイソプロピリデンテトラメチルビフェニレン基を含むイオンマー構造の修正.
- イオン交換能力 (IEC),陽子の伝導性,および材料の性質の特徴.
- 長期安定性テスト (1万時間) と燃料電池性能評価.
主要な成果:
- IECの1.32から3.26 meq/gの柔軟で透明な膜を開発しました.
- イソプロピリデンテトラメチルビフェニレン分子は安定性とIECを高めました.
- メチル置換膜は,次元安定性が向上した.
- 様々な条件 (80~120°C,20~93%RH) でナフィオン112に匹敵する陽子伝導性を達成した.
- 最高伝導度は0.3S/cmで,温度80°C,湿度93%で最高です.
- 膜は1万時間後に性質を保ち,よく結合したイオン群を示した.
- 90°Cと20%RHでのナフィオンよりも優れた燃料電池性能を示した.
結論:
- 最適化されたポリ ((アリレンエーテル・スルフォン) イオノマーは,ペルフッ化膜に対する有望な代替案として,PEMFCsに提供されています.
- 新しい膜は,特に厳しい動作条件下では,優れた安定性と伝導性を示しています.
- 高温と低湿度での優れた性能は,先進的な燃料電池アプリケーションの潜在能力を強調しています.
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