阳极
法拉第效率
欧姆接触
材料科学
枝晶(数学)
成核
图层(电子)
化学工程
电极
电池(电)
纳米技术
金属
阴极
化学
冶金
有机化学
量子力学
物理
工程类
数学
物理化学
功率(物理)
几何学
作者
Zhaofei Ge,Hao Zhang,Jiazhuang Tian,Jiae Wu,Yan Xu,Wentao Deng,Guoqiang Zou,Dan He,Hongshuai Hou,Chunru Wang,Xiaobo Ji
标识
DOI:10.1016/j.cej.2023.143054
摘要
Although the aqueous zinc batteries are deemed as the most competitive alternatives in the next-generation batteries, there are still annoying issues, including obdurate dendrites formation and side reactions, limiting practical applications. Hence, a uniform artificial C60 layer via an ex-situ approach is successfully assembled to construct robust Zn anode (denoted as [email protected]60). The functional C60 layer allows the formation of the ohmic contact interface between the C60 layer and Zn anode, inducing a low nucleation barrier and restraining 2D diffusion of Zn ions. More importantly, density functional theory calculations and simulation of the electric field contribution demonstrate that the C60 layer can facilitate the deposition of Zn on the Zn(0 0 2) plane and homogenize the electric field distribution. Consequently, the [email protected]60 electrode is obtained with a cycling stability over 3800 h at 0.25 mA cm−2 in symmetric cells, excellent coulombic efficiency for 1400 h in half cells, and together with better cycling stability and enhanced rate performance in full cells. Significantly, the C60 layer protection strategy provides a new view for an excellent dendrite-free Zn metal anode.
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