イミダゾールに負荷されたメソポロ性ポリイミドの高無水質陽子伝導性は,零下から中等温度の広い範囲に及ぶ
Yingxiang Ye1, Liuqin Zhang, Qinfang Peng
1College of Chemistry and Chemical Engineering, Fujian Provincial Key Laboratory of Polymer Materials, Fujian Normal University , 32 Shangsan Road, Fuzhou 350007, China.
Journal of the American Chemical Society
|January 1, 2015
まとめ
新しいイミダゾールを含むポリミドは,燃料電池用の燃料電池に, -40 °Cから90 °Cまでの幅広い温度範囲で,水無性陽子伝導性が高く,現在の材料の限界を克服します.
科学分野:
- マテリアルサイエンス 材料科学
- 電気化学 電気化学について
- 化学工学は化学工学というものです.
背景:
- 燃料電池技術は,スタートアップのための零下条件を含む様々な温度で安定した導電性を有する陽子伝導体を要求します.
- 既存の陽子伝導体は,高温 (>80°C) で劣化したり,低温 (<-5°C) で凍結したりすることが多い.
研究 の 目的:
- 広範囲の温度範囲 (−40~90°C) にわたって,高無水伝導率の新型陽子伝導材料を開発する.
- 熱分解と凍結に敏感な現在の材料の限界に対処するために.
主な方法:
- メソポラス構造を持つイミダゾールを含む四面体ポリミドの合成 (Im@Td-PNDI 1とIm@Td-PPI 2).
- 零下および高温条件を含む幅広い温度スペクトルにおける無水質陽子の伝導性の評価.
主要な成果:
- Im@Td-PNDI 1とIm@Td-PPI 2は, -40 °Cから90 °Cまでの高無水質陽子の伝導性を実証しました.
- 材料2は,他の無水導体と比較して,40°C以下で優れた伝導性を示した.
- 材料2の導電性は40°C以上で,His@[Al(OH) ((1,4-ndc) ]nと[Zn3 ((H2PO4) 6 ((H2O) 3) ((Hbim)) のような最先端の材料と比べることができました.
結論:
- イミダゾールを含む四面体ポリミドは,優れた熱と凍結解凍の安定性を提供します.
- これらの材料は,さまざまな気候条件下で燃料電池アプリケーションのための無水質陽子導体として有望な可能性を秘めています.
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