A ZnCl2 water-in-salt electrolyte for a reversible Zn metal anode

Chong Zhang; John Holoubek; Xianyong Wu; Aigerim Daniyar; Liangdong Zhu; Cheng Chen; Daniel P. Leonard; Ismael A. Rodríguez-Pérez; Jia-Xing Jiang; Chong Fang; Xiulei Ji

doi:10.1039/C8CC07730D

A ZnCl₂ water-in-salt electrolyte for a reversible Zn metal anode†

Chong Zhang,^ab John Holoubek,^b Xianyong Wu,^b Aigerim Daniyar,^b Liangdong Zhu,

^b Cheng Chen,

^b Daniel P. Leonard,^b Ismael A. Rodríguez-Pérez,^b Jia-Xing Jiang,

*^a Chong Fang

*^b and Xiulei Ji

*^b

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* Corresponding authors

^a Key Laboratory of Applied Surface and Colloid Chemistry (Shaanxi Normal University), Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, Shaanxi, P. R. China
E-mail: jiaxing@snnu.edu.cn

^b Department of Chemistry, Oregon State University, Corvallis, OR, USA
E-mail: david.ji@oregonstate.edu, chong.fang@oregonstate.edu

Abstract

We report a low-cost water-in-salt electrolyte, of 30 m ZnCl₂, which enables a dendrite-free Zn metal anode to possess a high coulombic efficiency (CE). In asymmetric Zn‖Zn cells with a limited mass of plated Zn as the working electrode, the ZnCl₂ WiSE improves the average CE of the Zn anode to 95.4% from 73.2% in 5 m ZnCl₂.

This article is part of the themed collection: ChemComm 60th Anniversary Historic Papers from North America

Chemical Communications

A ZnCl₂ water-in-salt electrolyte for a reversible Zn metal anode†

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A ZnCl₂ water-in-salt electrolyte for a reversible Zn metal anode

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