水热法制备蜂窝状ZnCo_2O_4/rGO  

Preparing honeycomb-like ZnCo_2O_4/rGO by hydrothermal method

作　　者：王朕[1,2] 汝强[1,2] 侯贤华[1,2] 胡社军[1,2] WANG Zhen RU Qiang HOU Xian-hua HU She-jun(Guangdong Engineering Technology Research Center of Efficient Green Energy and Environmental Protection Materials, Guangzhou, Guangdong 510006, China Gnangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, School of Physics and Telecommunication Engineering,South China Normal University, Guangzhou, Guangdong 510006, China)

机构地区：[1]广东省高效绿色能源与环保材料工程技术研究中心,广东广州510006 [2]广东省量子调控工程与材料重点实验室华南师范大学物理与电信工程学院,广东广州510006

出　　处：《电池》2016年第5期259-262,共4页Battery Bimonthly

基　　金：国家自然科学基金(51101062;51171065);广东省自然科学基金(S2012020010937;2014A030313436);广东高校优秀青年创新人才培育项目(LYM09052);广州市科技计划项目(2011J4100075)

摘　　要：以石墨烯为基底,用水热法制备蜂窝状钴酸锌（ZnCo2O4）/还原氧化石墨烯（rGO）微球复合材料。用XRD、SEM分析复合材料的结构和形貌,用恒流充放电及循环伏安法测试复合材料的电化学性能。石墨烯的加入,可改变ZnCo2O4颗粒的形貌,并改善复合材料作为锂离子电池负极活性物质的电化学性能。以500 m A/g的电流在0.013.00 V循环,复合材料的首次放电比容量为1 326.7 m Ah/g,第70次循环的放电比容量为1 212.4 m Ah/g。The honeycomb-like zinc cobaltate（ ZnCo2O4 ）/reduced graphene oxide（rGO） microspheres composite was prepared by hydrothennal method using graphene as the substrate. XRD and SEM were used to analyze the structure and morphology of the composite, the electrochemical performance of the composite was tested by galvanostactic charge-discharge and cyclic voltammetry. Adding graphene could modify the morphology of ZnCo2O4 particle and improve the electrochemical performance of the composite as anode active material of L-ion battery. When cycled with the current of 500 mA/g in 0. 01 - 3.00 V,the initial specific discharge capacity of the composite was 1 326. 7 mAh/g,the specific discharge capacity was 1 212.4 mAh/g at the 70th cycle.

关 键 词：钴酸锌(ZnCo2O4) 石墨烯 锂离子电池 负极材料 

分 类 号：TB332[一般工业技术—材料科学与工程] TM912[电气工程—电力电子与电力传动]