材料科学
过电位
阴极
水溶液
电解质
阳极
锌
化学工程
电极
纳米技术
冶金
电化学
物理化学
电气工程
工程类
化学
作者
Y. Liu,Pengfei Hu,H. Liu,Xiang Wu,Chunyi Zhi
标识
DOI:10.1016/j.mtener.2020.100431
摘要
The emerging aqueous zinc ion batteries (ZIBs) are one of the alternatives to lithium ion batteries (LIBs) because zinc electrode possesses low equilibrium potential, high exchange current density and high hydrogen evolution overpotential. Nevertheless, they are still challenging on improving the cycle stability and compatibility with electrolytes. Herein, we report VO2[email protected] PPy hollow nanospheres consisting of many nanosheets as cathode materials for ZIBs. The spaces between nanospheres facilitate transmission of Zn ions and make electrode tolerate high volume change. The as-obtained material delivers a specific capacity of 440 mAh g−1 at 0.1 A g−1. Also, they remain a reversible capacity of 143 mAh g−1 after 860 cycles at 1 A g−1.
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