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Updated: Nov 25, 2025

Zinc-Sponge Battery Electrodes that Suppress Dendrites
Published on: September 29, 2020
Highly stable zinc metal anode enabled by oxygen functional groups for advanced Zn-ion supercapacitors
Kangyu Zou1, Peng Cai1, Xinglan Deng1
1College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China. gq-zou@csu.edu.cn.
Abstract:
Konjac glucomannan (KGM) featuring abundant oxygen functional groups has been elaborately designed to enhance Zn reversibility. Importantly, -OH and C[double bond, length as m-dash]O groups as active sites could redistribute the Zn2+ concentration field and modulate the plating/stripping rate, further enabling uniform Zn deposition without dendrite growth. The Zn@KGM anode enables an advanced Zn-ion supercapacitor to deliver an impressive rate performance and cycling stability (up to 5000 cycles accompanied by a coulombic efficiency of 99.8%).
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