安定性と柔軟性の高いゼオライト電解質固体リチウム空気電池

Xiwen Chi^1,2, Malin Li^1,2, Jiancheng Di¹

¹State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun, P. R. China.

Nature

|April 22, 2021

まとめ

安定した固体リチウム空気電池をゼオライト電解質を使って開発しましたこのイノベーションは液体電池の安全性の問題を克服し,先進的なエネルギー貯蔵ソリューションのための有望な経路を提供します.

科学分野:

材料科学
電気化学
エネルギー貯蔵

背景:

固体リチウム空気電池は,液体システムよりも安全性と安定性を高めます.
従来の固体電解質は,リチウム金属/空気不安定性とインターフェース抵抗との課題に直面しています.
ゼオライトX (LiX) は,固体電解質のための新しい材料を提示します.

研究の目的:

安定した高性能リチウム空気電池を開発する.
Li-airシステムにおける従来の固体電解質の限界を解決する.
固体電解質としてのゼオライトXの可能性を調査する

主な方法:

統合された固体Li-air電池は,超薄のLiX膜を唯一の電解質として使用して構築されました.
LiX電解質は,鋳型リチウムアノドと炭素ナノチューブカトドを in situ アセンブリで統合した.
電気化学的性能と安定性は,様々な条件下で評価されました.

主要な成果:

ゼオライトベースの電解質は固有の化学的安定性を示しリチウムと空気からの分解を抑制しました
バッテリーは,120mAh/gの炭素ナノチューブの高容量を達成しました.
500 mA/gと1,000 mAh/gで149サイクルが記録され,Li-P-Oと有機電解質を上回った.

結論:

ゼオライトXは,安定した高性能の固体Li-air電池の開発を可能にします.
電池の電気化学性能,柔軟性,安定性は,実用性を示唆しています.
このアプローチは,リチウムイオン電池やNa-air電池のような他のエネルギー貯蔵システムにも適用できます.

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