モバイル・プロトン・キャリアをコーディネーション・ポリマー・クリスタルの構造的欠陥に封じ込む:高無水質プロトン伝導と燃料電池の応用

Munehiro Inukai^1,2, Satoshi Horike³, Tomoya Itakura⁴

¹Institute for Integrated Cell-Material Sciences (WPI-iCeMS), Kyoto University , Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.

Journal of the American Chemical Society

|June 22, 2016

まとめ

プロトンの伝導性が高い協調ポリマー (CP) に移動性プロトンの伝導体を封じ込みました燃料電池の無水性電解質が実現し清潔なエネルギー技術が進歩しました

科学分野:

材料科学
電気化学
固体化学

背景:

非毛細な調整ポリマー (CPs) はエネルギー用途で研究されている.
燃料電池技術において材料の陽子伝導性は極めて重要です
無水質の陽子伝導は大きな課題です

研究の目的:

毛穴のない協調性ポリマーの欠陥部位内に移動性陽子キャリアを封じ込めます.
無水状態での結果の陽子伝導性を調査する.
燃料電池の電解質としてのこれらの材料の可能性を評価する.

主な方法:

固体核磁気共振 (NMR) スペクトロスコーピー
X線吸収微細構造 (XAFS) 分析
X線微分法 (XRD) と誘導結合プラズマ原子放射スペクトロメトリー/元素分析 (ICP-AES/EA)

主要な成果:

CP欠陥部位内の移動性陽子キャリア (H3PO4,H2PO4(-),H2O) の封じ込みを成功させた.
無水状態で150°Cで高い陽子伝導性を達成した.
燃料電池の電解質として材料の有効性を証明した

結論:

CPの欠陥部位は,移動性陽子キャリアを宿し,陽子の移動性を高めることができます.
陽子伝導性が高いと組み合わせた無孔性の性質は,無水燃料電池の電解質に適しています.
このアプローチは先進的な燃料電池材料の開発に有望な経路を提供する.

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