期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 9, 期 6, 页码 1282-1287出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2006.11.022
关键词
supercapacitors; cobalt sulfide; high capacitance; current density; mechanism
High capacitance at a high charge-discharge current density of 50 mA/cm(2) for a new type of electrochemical supercapacitor cobalt sulfide (CoSx) have been studied for the first time. The CoSx, was prepared by a very simply chemical precipitation method. The electrochemical capacitance performance of this compound was investigated by cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic charge-discharge tests with a three-electrode system. The results show that CoSx has excellent electrochemical capacitive characteristic with potential range -0.3 similar to 0.35 V (versus SCE) in 6 M KOH solution. Charge-discharge behaviors have been observed with the highest specific capacitance values of 475 F/g at the current density of 5 mA/cm(2), even at the high current density of 50 mA/cm(2), CoSx also shows the high specific capacitance values of 369 F/g. (c) 2006 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据