碳气凝胶/四氧化三钴复合材料的制备及电化学性能  

Preparation and electrochemical performance of carbon aerogel /cobaltosic oxide composites

作　　者：傅晓燕[1] 梅军[1,2] 刘昊[2] 刘西川[2] 

机构地区：[1]西南科技大学材料科学与工程学院,四川绵阳621010 [2]中国工程物理研究院成都绿色能源与绿色制造中心,成都610200

出　　处：《功能材料》2015年第6期6115-6119,共5页Journal of Functional Materials

基　　金：国家高技术研究发展计划(863计划)资助项目(2013AA050905)

摘　　要：采用电化学沉积法,以碳气凝胶(CA)为基底沉积氢氧化钴(Co(OH)2),并热处理制备碳气凝胶/四氧化三钴(CA/Co3O4)复合电极材料。采用XRD,SEM对样品的结构和微观形貌进行表征。采用循环伏安,恒电流充放电测试,交流阻抗测试对样品的电化学性能进行了表征和测试。研究结果表明,采用电化学沉积法制备的CA/Co3O4复合电极材料,在电流密度0.5和5 A/g时,其质量比容量分别为1 020和646 F/g。可见Co3O4的复合,能够很大程度的提升电化学性能。CA / Co3O4 composite electrode material was obtained by electrochemical deposition method. carbon aerogel( CA) as the substrate,deposition Co( OH)2in carbon aerogel( CA) and by heat treatment process. The samples phase structure and morphology were characterized by means of XRD,SEM. electrochemical performance were characterized by means of cyclic voltammetry,galvanostatic charge-discharge,AC impedance measurements. The results show that: Preparation the composite electrode materials of CA / Co3O4 by electrochemical deposition method,specific capacitance was up to 1 020 and 646 F / g at the current density of 0. 5 and 5 A / g,respectively. Can be see Co3O4 Composite,can greatly improve the electrochemical performance.

关 键 词：电沉积 碳气凝胶 四氧化三钴 超级电容器 

分 类 号：O664[理学—分析化学]