电解质
成核
阳极
化学工程
金属
材料科学
锌
石墨烯
化学
化学物理
纳米技术
物理化学
电极
冶金
有机化学
工程类
作者
Xianzhong Yang,Weiping Li,Ziyan Chen,Meng Tian,Jun Peng,Jinrong Luo,Yiwen Su,Yuhan Zou,Gao Weng,Yuanlong Shao,Shixue Dou,Jingyu Sun
标识
DOI:10.1002/anie.202218454
摘要
Despite conspicuous merits of Zn metal anodes, the commercialization is still handicapped by rampant dendrite formation and notorious side reaction. Manipulating the nucleation mode and deposition orientation of Zn is a key to rendering stabilized Zn anodes. Here, a dual electrolyte additive strategy is put forward via the direct cooperation of xylitol (XY) and graphene oxide (GO) species into typical zinc sulfate electrolyte. As verified by molecular dynamics simulations, the incorporated XY molecules could regulate the solvation structure of Zn2+ , thus inhibiting hydrogen evolution and side reactions. The self-assembled GO layer is in favor of facilitating the desolvation process to accelerate reaction kinetics. Progressive nucleation and orientational deposition can be realized under the synergistic modulation, enabling a dense and uniform Zn deposition. Consequently, symmetric cell based on dual additives harvests a highly reversible cycling of 5600 h at 1.0 mA cm-2 /1.0 mAh cm-2 .
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