流電池アプリケーションの持続性,循環性,低ポテンシャル電解質に対する物理的有機的アプローチ
Christo S Sevov1,2, David P Hickey1,3, Monique E Cook1,2
1Joint Center for Energy Storage Research , 9700 S. Cass Avenue, Argonne, Illinois 60439, United States.
Journal of the American Chemical Society
|February 22, 2017
まとめ
研究者は,非水性酸化還元電池の電解質を設計するための新しい方法を開発しました. このアプローチにより,グリッド規模のエネルギー貯蔵のための安定した低ポテンシャルサイクリングを示す新しいピリジニウムベースのアノライトが開発されました.
科学分野:
- 電気化学
- 材料科学
- エネルギー貯蔵
背景:
- ネットワーク規模のエネルギー貯蔵は,再生可能エネルギーの統合に不可欠です.
- 非水性リドックスフロー電池は,大規模アプリケーションの可能性を秘めています.
- 現在の制限には,電解質の安定性と動作ポテンシャル範囲が含まれています.
研究 の 目的:
- 先進的なバッテリー電解質の設計のための予測的アプローチを開発する.
- 低解解質と高解質の電解質を特定する.
- 非水性酸化還元流電池の安定性とサイクル寿命を向上させる.
主な方法:
- 物理有機化学の原理を用いて電解質を設計した.
- 特定の電気化学的性質をターゲットに予測モデルを使用しています.
- 合成され,電気化学的にテストされた新しいピリジニウムベースの化合物.
主要な成果:
- 低酸化還元電位 (−1.21 V 対 Fc/Fc+) を有する新しいピリジニウムベースのアノライトを特定した.
- 200サイクルで検出可能な容量損失なしで95%の充電状態を達成しました.
- 予測デザインのアプローチの有効性を実証した.
結論:
- 物理有機化学による設計戦略は,高性能バッテリー電解質の開発に有効です.
- 新しいピリジニウムアノライトは,非水性酸化還元流電池の安定した低ポテンシャル動作に希望を示しています.
- この研究は,グリッドスケールのエネルギー貯蔵アプリケーションのための電解質の開発を進めています.
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