Highly stable zinc metal anode enabled by oxygen functional groups for advanced Zn-ion supercapacitors,Chemical Communications

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Highly stable zinc metal anode enabled by oxygen functional groups for advanced Zn-ion supercapacitors
Chemical Communications ( IF 4.3 ) Pub Date : 2020-12-10 , DOI: 10.1039/d0cc07526d
Kangyu Zou _{1,

2,

3,

4} , Peng Cai _{1,

2,

3,

4} , Xinglan Deng _{1,

2,

3,

4} , Baowei Wang _{1,

2,

3,

4} , Cheng Liu _{1,

2,

3,

4} , Zheng Luo _{1,

2,

3,

4} , Xiaoming Lou _{4,

5,

6,

7} , Hongshuai Hou _{1,

2,

3,

4} , Guoqiang Zou _{1,

2,

3,

4} , Xiaobo Ji _{1,

2,

3,

4,

8}

Affiliation

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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