Cover Image, Volume 3, Number 2, June 2021

Front cover image: Despite the remarkable progress made on high-performing cathode materials, showstoppers of aqueous Zn-metal batteries are dendrite problem and poor reversibility zinc-metal anode (ZMA). In article number 10.1002/cey2.70, research teams by Xiulei Ji, Jia-Xing Jiang, Chong Fang P. Alex Greaney collaborated to develop a ZnCl2/LiCl mixture water-in-salt electrolyte, in which high concentration makes water molecules robust additive Li+ leads an electrostatic shield eff ect restrict growth Zn dendrites. As result, ZMA shows Coulombic effi ciency dendrite-free morphology.