単分散型テレヘリックポリエチレンにおけるフォスフォン酸層内の無水質陽子輸送
Anne Staiger1, Benjamin A Paren2, Robin Zunker1
1Department of Chemistry, University of Konstanz, Universitätsstrasse 10, 78457, Konstanz, Germany.
Journal of the American Chemical Society
|September 29, 2021
まとめ
燃料電池のプロトンの伝導性が高くなっています これらの材料はナノ構造に自己組み立てられ 降解を防ぎ 高温で効率的なエネルギー変換を可能にします
科学分野:
- 材料科学
- ポリマー化学
- 電気化学
背景:
- 高温燃料電池における無水質の陽子伝導膜について,リン酸基を持つポリマーが研究されている.
- これらのポリマーを合成し,そのナノ構造を制御することで,最適の性能を得ることが困難です.
研究 の 目的:
- コントロールされた長さ (C26PA2とC48PA2) のフォスフォン酸末端の長鎖アリファティック材料の単純な合成を報告する.
- これらの新材料の自己組織化,ナノ構造,陽子伝導性を調査する.
主な方法:
- 精密に定義されたC26PA2およびC48PA2ポリマーの合成
- 融解温度 (Tm) 以下の物質形態とナノ構造の特徴
- 高温で無水質陽子の伝導性を測定する.
主要な成果:
- C26PA2とC48PA2は,結晶型ポリエチレン骨格と,フォスフォニック酸の積分で層状の形状を示しています.
- Tm以上では,特にC26PA2では,高相関長 (940 Å) の熱熱的な液晶相が観察された.
- 無水質陽子の伝導性は,水または無水化物の形成なしに,150 °Cで10^-4 S/cmに達した.
結論:
- ポリマー化学の精密な制御により,自己組み立てのナノスケールアグレガントが形成されます.
- これらのナノ構造は高温燃料電池の 応用において極めて重要な 急速な陽子伝導性を促進します
- 開発された材料は,先進的なエネルギー貯蔵と変換技術の大きな可能性を示しています.
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