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

Chem Commun (Camb). 2018 Dec 13;54(100):14097-14099. doi: 10.1039/c8cc07730d.

Authors

Chong Zhang¹, John Holoubek, Xianyong Wu, Aigerim Daniyar, Liangdong Zhu, Cheng Chen, Daniel P Leonard, Ismael A Rodríguez-Pérez, Jia-Xing Jiang, Chong Fang, Xiulei Ji

Affiliation

¹ 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 710062, P. R. China. jiaxing@snnu.edu.cn.

PMID: 30488907
DOI: 10.1039/c8cc07730d

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.