还原氧化石墨烯/氢氧化钴复合材料的制备与电化学性能研究  

Preparation and electrochemical performance of reduced graphene oxide/Co(OH)_2 composite material

作　　者：张梓澜 杨实润 周静红[1] 

机构地区：[1]华东理工大学,化学工程联合国家重点实验室,上海200237

出　　处：《化工新型材料》2017年第6期80-82,共3页New Chemical Materials

基　　金：国家重点基础研究发展规划项目(973)(2014CB239702)

摘　　要：采用溶剂热法制备了还原氧化石墨烯/氢氧化钴[rGO/Co(OH)_2]复合材料,通过X射线衍射、扫描电镜、拉曼光谱、热失重分析和氮气吸脱附表征了材料的形貌、结构和组成,并采用循环伏安法和恒电流充放电测试了复合材料的电化学性能。结果表明:球状的Co(OH)_2颗粒均匀分散在rGO表面形成了介孔占优的复合材料rGO/Co(OH)_2;由于Co(OH)_2和rGO的协同作用,复合材料表现出良好的电化学性能,在电流密度为1A/g时,比电容为631F/g,循环1000次后电容的保持率仍为83%。A composite combining reduced graphite oxide and nickel hydroxide（rGO/Co（OH）_2）was synthesized through a solvothermal process for supercapacitors.The structure and morphology of this composite were characterized by X-ray diffraction,field emission scanning electron microscopy,Raman spectrometer and thermogravimetric analysis.The electrochemical characteristics of the electrodes made of rGO/Co（OH）_2 composite were tested by the cyclic voltammetry and galvanostatic measurement.The results shown that Co（OH）_2 nanoparticles were uniformly grown on rGO surface.This composite exhibited a significantly enhanced specific capacitance of 631F/g at 1A/g in a three-electrode system,owing to its unique mesoporous structure and the synergy between the rGO and Co（OH）_2.

关 键 词：CO(OH)2 rGO 溶剂热 电化学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TM53[电气工程—电器]