Chemical precipitation synthesis of KCoF3 for supercapacitor applications

被引：14
|
作者：
Mi, Wei [1 ]
Dai, Chuanjun [1 ]
Zhou, Shuang [1 ]
Yang, Juan [1 ]
Li, Qi [1 ]
Xu, Qingyu [1 ,2 ]
机构：
[1] Southeast Univ, Sch Phys, Nanjing 211189, Jiangsu, Peoples R China
[2] Nanjing Univ, Natl Lab Solid State Microstruct, Nanjing 210093, Jiangsu, Peoples R China
来源：
MATERIALS LETTERS | 2018年 / 227卷
基金：
国家重点研发计划; 中国国家自然科学基金;
关键词：
Fluoride; Supercapacitor; CAPACITANCE; FILM; CO;
D O I：
10.1016/j.matlet.2018.04.131
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A simple chemical precipitation method is applied to synthesize pure-phase KCoF3 with size in the range of 1-5 mu m, which is further used as electrode material in supercapacitors. The cyclic voltammetry, electrochemical impedance spectroscopy measurements, and galvanostatic charge-discharge cycling test measurements are carried out for the KCoF3 electrode, and the results show a specific capacitance of 286 F.g(-1) at 0.5 A.g(-1) in 6.0 M KOH electrolyte. Particularly, KCoF3 electrode exhibits long cycling lifetime with 96% retention of initial capacitance after 1000 cycles at a current density of 5.0 A.g(-1). (C) 2018 Elsevier B.V. All rights reserved.
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页码：66 / 69
页数：4
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