4.6 Article

Biphasic Electrolyte Engineering Enabling Reversible Zn Metal Batteries

期刊

ACS ENERGY LETTERS
卷 8, 期 10, 页码 4338-4348

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.3c01423

关键词

-

向作者/读者索取更多资源

This study proposes a biphasic electrolyte based on the salting out effect to comprehensively enhance the electrochemical performance of aqueous Zn metal batteries. On the Zn anode side, the organic-rich phase electrolyte reduces water content and manipulates the solvation structure of Zn2+, resulting in a uniform ZnOHF solid-electrolyte interphase (SEI). On the cathode side, the aqueous phase electrolyte maintains fast ionic conductivity and modifies the electrode/electrolyte interface property due to residual organic molecules, accelerating the redox kinetics.
Aqueous Zn metal batteries are promising for large-scale energy storage. However, their implementation is limited by the irreversible Zn anodes. Herein, the biphasic electrolyte based on the salting out effect is proposed to comprehensively enhance the electrochemical performance. The organic-rich phase electrolyte on the Zn anode side not only decreases the water content but also manipulates the Zn2+ solvation structure. Additionally, a uniform ZnOHF solid-electrolyte interphase (SEI) is formed in situ. This synergy contributes to suppressing water-triggered parasitic reactions and dendrite growth, resulting in a high average Coulombic efficiency (99.68% over 400 cycles) and prolonged cycling lifespans. On the cathode side, the aqueous phase electrolyte maintains fast ionic conductivity and modifies the electrode/electrolyte interface property because of residual organic molecules, which accelerates the redox kinetics. The Zn//PANI full cell with biphasic electrolyte performs much better with regard to rate, cycling, and storage performance than a cell with a conventional aqueous ZnSO4 electrolyte.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据