β-FeOOH: a new anode for potassium-ion batteries

Xiaodong Shi; Liping Qin; Guofu Xu; Shan Guo; Shuci Ma; Yunxiang Zhao; Jiang Zhou; Shuquan Liang

doi:10.1039/d0cc01009j

β-FeOOH: a new anode for potassium-ion batteries

Chem Commun (Camb). 2020 Mar 31;56(26):3713-3716. doi: 10.1039/d0cc01009j.

Authors

Xiaodong Shi¹, Liping Qin², Guofu Xu³, Shan Guo¹, Shuci Ma¹, Yunxiang Zhao¹, Jiang Zhou³, Shuquan Liang³

Affiliations

¹ School of Materials Science and Engineering, Central South University, 932 South Lushan Road, Changsha 410083, Hunan, P. R. China. zhou_jiang@csu.edu.cn lsq@csu.edu.cn.
² College of Biological and Chemical Engineering, Guangxi University of Science and Technology, Liuzhou 545006, Guangxi, P. R. China.
³ School of Materials Science and Engineering, Central South University, 932 South Lushan Road, Changsha 410083, Hunan, P. R. China. zhou_jiang@csu.edu.cn lsq@csu.edu.cn and Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province, Central South University, 932 South Lushan Road, Changsha 410083, Hunan, P. R. China.

PMID: 32191784
DOI: 10.1039/d0cc01009j

Abstract

Potassium-ion batteries (PIBs) hold great potential in large-scale energy storage systems. Here, β-FeOOH is employed as an anode for PIBs, exhibiting high capacity and good cycling stability. The study of potassium storage mechanism discloses that β-FeOOH turns into an amorphous structure in the first discharge process, and remains stable in the amorphous state in the subsequent cycles.