用于先进锌离子超级电容器的由氧官能团实现的高度稳定的锌金属阳极。
Highly stable zinc metal anode enabled by oxygen functional groups for advanced Zn-ion supercapacitors.
作者信息
Zou Kangyu, Cai Peng, Deng Xinglan, Wang Baowei, Liu Cheng, Luo Zheng, Lou Xiaoming, Hou Hongshuai, Zou Guoqiang, Ji Xiaobo
机构信息
College of Chemistry and Chemical Engineering, Central South University, Changsha, 410083, China.
School of Materials and Chemistry Engineering, Hunan Institute of Technology, 18 Henghua Rd, Hengyang, China.
出版信息
Chem Commun (Camb). 2021 Jan 14;57(4):528-531. doi: 10.1039/d0cc07526d. Epub 2020 Dec 17.
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 Zn 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%).
魔芋葡甘聚糖（KGM）具有丰富的氧官能团，经过精心设计以增强锌的可逆性。重要的是，作为活性位点的 -OH 和 C=O 基团可以重新分布锌浓度场并调节电镀/剥离速率，进而实现均匀的锌沉积且无枝晶生长。Zn@KGM 阳极使先进的锌离子超级电容器具有出色的倍率性能和循环稳定性（高达 5000 次循环，库仑效率为 99.8%）。
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