Synthesis and characterization of porous cobalt oxide/copper oxide nanoplate as novel electrode material for supercapacitors

作     者：张水蓉 胡志彪 刘开宇 刘艳珍 何方 谢清亮 Shui-rong ZHANG;Zhi-biao HU;Kai-yu LIU;Yan-zhen LIU;Fang HE;Qing-liang XIE

作者机构：中南大学化学化工学院长沙410083 龙岩学院化学与材料学院龙岩364012 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2015年第25卷第12期

页      面：4054-4062页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：Project(21471162)supported by the National Natural Science Foundation of China Project(2014LY36)supported by the Science and Technology Project of Longyan City China 

主　　题：cobalt oxide/copper oxide composite hexadecyltrimethylammonium bromide(CTAB) polyvinylpyrrolidone(PVP) hydrothermal method supercapacitors 

摘      要：A promising Co3O4/Cu O composite electrode material was successfully synthesized through a facile hydrothermal and calcination process. Effects of the surfactants hexadecyltrimethyl ammonium bromide（CTAB） and polyvinylpyrrolidone（PVP） on the morphology and electrochemical performance of the composite were investigated. Powder X-ray diffraction（XRD）, scanning electron microscopy（SEM）, transmission electron microscopy（TEM） and nitrogen adsorption-desorption experiment were employed to characterize the microstructures and morphologies of the composite. Meanwhile, the electrochemical performances of the samples were studied using cyclic voltammetry（CV）, galvanostatic charge-discharge test and electrochemical impedance spectroscopy（EIS）. The results show that the porous Co3O4/Cu O-CTAB nanoplates own the best performance and exhibits a high specific capacitance of 398 F/g at 1 A/g with almost 100% capacitance retention over 2000 cycles, and it retains 90% of capacitance at 10 A/g.