リバーシブル・カウンテリオン誘発固体複合によるダブル・レドックス電気化学容器における効率的な電荷貯蔵
Brian Evanko1, Seung Joon Yoo2, Sang-Eun Chun3
1Materials Department, University of California , Santa Barbara, California 93106, United States.
Journal of the American Chemical Society
|July 22, 2016
まとめ
レドックス強化電気化学コンデンサ (レドックスEC) は,電極内に電解質を保持することで性能が向上します. 新しいペンチルビオロゲン/ブロミド電解質は,高度なエネルギー貯蔵のために高いエネルギーと安定性を提供します.
科学分野:
- 電気化学
- 材料科学
- エネルギー貯蔵
背景:
- レドックス強化電気化学コンデンサ (レドックスEC) は,高エネルギー密度の可能性を提供します.
- 電解質の保持は,安定して効率的な性能のために不可欠です.
- 既存の方法はしばしば電解質の損失と 安定性の限界に直面します
研究 の 目的:
- レドックスECにおける電解質保持の改善のためのメカニズムを調査する.
- 高性能の電気化学エネルギー貯蔵のための新しい電解質システムを特定する.
- 安定で効率的なレドックスECの設計原理を実証する.
主な方法:
- 反酸化活性種 (ブロミドとビオゲン) を保持するために,反転可能な対テリオン誘発の固体複合化を使用する.
- 新しいペンチルビオロゲン/ブロミド (PV/Br) 電解質システムの開発と試験
- 特定のエネルギー,クーロンビック効率,サイクル安定性を含む電気化学性能の特徴.
主要な成果:
- PV/Br レドックスECは,0.5 A/gdryで,特定のエネルギー 48.5 W·h/kgdryを達成した.
- 卓越したクーロンビック効率 (99. 7%) と1万サイクル以上の安定性を示した.
- 装置は逆極性で効果的に動作し,堅固な設計を示しました.
結論:
- リバーシブルカウンターイオン誘発固体複合化は,酸化還元EC性能を向上させるための効果的な戦略である.
- ペンチルビオロゲン/ブロミド電解質は,高性能エネルギー貯蔵における重要な進歩を表しています.
- この研究は,安定で効率的な電気化学コンデンサの将来の開発のための重要な設計原理を提供します.
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