锌-空气电池阴极纳米Co3O4@rGO催化剂研究  

Research on nano Co3O4@rGO as cathode electro-catalyst for zinc-air battery

作　　者：赵良凤 刘淑芝[1] 崔宝臣[1] ZHAO Liang-feng;LIU Shu-zhi;CUI Bao-chen(College of Chemistry and Chemical Engineering,Northeast Petroleum University,Daqing Heilongjiang 163318,China)

机构地区：[1]东北石油大学化学化工学院

出　　处：《电源技术》2020年第1期52-54,98,共4页Chinese Journal of Power Sources

基　　金：黑龙江省自然科学基金资助项目(B2016001)

摘　　要：采用水热法在阴极集流体泡沫镍上负载Co3O4@rGO电催化剂,利用扫描电子显微镜(SEM)、X射线衍射(XRD)和能量散射光谱(EDS)进行表征。结果表明,在负载还原石墨烯(rGO)的泡沫镍集流体上主要生长了较均匀的Co3O4纳米线阵列和少量Co3O4纳米花和Co3O4纳米片,该Co3O4@rGO纳米复合材料表现出优异的氧还原和氧析出反应(ORR/OER)双功能催化活性。在室温空气环境下,电池连续稳定循环运行232 h,总计600次循环,大多数循环的库仑效率在82%~85%之间,放电电压平台在1.65 V左右,具有良好的放电倍率性能。Co3O4@rGO electro-catalyst was loaded on nickel foam by hydrothermal method.The samples were characterized by SEM,XRD and EDS.The results show that a lot of Co3O4 nanowire arrays and a few of Co3O4 nanoflowers and nanosheets grow directly on nickel foam current collector.The Co3O4@rGO electro-catalyst exhibits excellent catalytic activity for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).The zinc-air battery cycles steadily up to 600 cycles(over 232 h),the columbic efficiency for most cycles is 82%-85%,and the discharge voltage plateau is at around 1.65 V.The zinc-air battery has good discharge rate performance.

关 键 词：锌-空气电池 空气阴极 CO3O4 电催化剂 OER/ORR 

分 类 号：TM911.4[电气工程—电力电子与电力传动]