阳极
材料科学
成核
超级电容器
锌
化学工程
枝晶(数学)
电偶阳极
电池(电)
导电体
电极
电化学
碳纤维
复合数
无机化学
复合材料
冶金
化学
有机化学
量子力学
功率(物理)
物理化学
数学
工程类
阴极保护
物理
几何学
作者
Chen Chen,Qianchen Liang,Yan Mao,Xinren Zhang,Xianyou Luo,Jinpeng Wu,Pengyun Hu,Yong Chen
标识
DOI:10.1002/ente.202100297
摘要
The nonuniform zinc nucleation process on the surface of zinc metal anodes is known to result in irreversible dendrite growth, which brings the risk of short circuit for the zinc‐ion hybrid supercapacitor (ZIHS). Herein, a conductive carbon−zinc composite anode with dense active sites is reported to achieve controllable dendrite growth. This unique modified anode in the ZIHS enables extremely low polarization (47 mV) in the symmetric battery test and delivers excellent application performance (capacity retention of 97.7% for 10 000 cycles). In addition, the changes in crystallographic orientation and morphological characteristics of the zinc electrode during deposition are observed by ex situ analysis. The improved zinc nucleation pattern of the modified anode verifies that the carbon additive can significantly facilitate isotropy in Zn deposition. Such a successful application of this economic and expandable modification strategy shows that carbon additives have significant potential in improving the stability of the anode.
科研通智能强力驱动
Strongly Powered by AbleSci AI