Co_(3)O_(4)/石墨烯气凝胶的催化性能及在铝空气电池中的应用  

Catalytic performance of Co_(3)O_(4)/3DGA and application in rechargeable Al-air batteries

作　　者：张忠清 诸葛祥群 罗志虹 李义兵[2] 罗鲲 ZHANG Zhong-qing;ZHUGE Xiang-qun;LUO Zhi-hong;LI Yi-bing;LUO Kun(Jiangsu Provincial Engineering Research Center for New Energy Vehicle Power Battery Intelligent Manufacturing Technology,Changzhou University,Changzhou 213164,China;College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]江苏省新能源汽车动力电池智能制造技术工程研究中心,常州大学,江苏常州213164 [2]桂林理工大学材料科学与工程学院,广西桂林541004

出　　处：《现代化工》2023年第12期88-93,共6页Modern Chemical Industry

基　　金：国家自然科学基金(51874051,52111530139)。

摘　　要：采用二次水热法合成了Co_(3)O_(4)/三维石墨烯气凝胶(3DGA)复合材料正极,并对其进行电化学分析。结果表明,Co_(3)O_(4)/3DGA具有比3DGA更高的OER催化活性。Co_(3)O_(4)/3DGA正极应用于铝空气电池时,在0.2 mA/cm^(2)的电流密度下电池可至少循环80次,使用3DGA正极的电池只能循环64次,而且Co_(3)O_(4)/3DGA正极可以显著降低电池的充电电压。Co_(3)O_(4)/3DGA的ORR/OER双功能催化活性是提高铝空气电池性能的主要因素。Rechargeable aluminum-air battery has recently attracted attention due to its high bulk energy density,low cost and safety in use.Co_(3)O_(4)/three-dimensional graphene aerogel(3DGA)composite cathode is synthesized by using a secondary hydrothermal method.Electrochemical analysis show that Co_(3)O_(4)/3DGA has higher OER catalytic activity than 3DGA.The aluminum air battery assembled with Co_(3)O_(4)/3DGA cathode can be cycled at least 80 times at a current density of 0.2 mA·cm^(-2),while the battery assembled with 3DGA cathode can only be cycled 64 times.Moreover,Co_(3)O_(4)/3DGA cathode can significantly reduce the charging voltage of the battery.The ORR/OER bifunctional catalytic activity of Co_(3)O_(4)/3DGA is the main factor improving the performance of aluminum air battery.

关 键 词：可充电铝空气电池 石墨烯气凝胶 Co_(3)O_(4) 复合正极 OER催化 

分 类 号：O6[理学—化学]