超级电容器用Co_3O_4/镍泡沫复合电极材料的研究现状  

Development of Co_3O_4/Ni composite foam for application in supercapacitor

作　　者：郝诗韵 李迎春[1] 胡国胜[1] 杜晓军[2] 

机构地区：[1]中北大学材料科学与工程学院,太原030051 [2]中北大学机械与动力工程学院,太原030051

出　　处：《化工新型材料》2017年第1期12-14,共3页New Chemical Materials

基　　金：山西省国际科技合作计划项目(2015081018)

摘　　要：四氧化三钴(Co_3O_4)因理论比电容量高、价格低和环境友好,在超级电容器电极材料中具有良好的应用前景,但是传统合成的Co_3O_4材料多为粉末状态,需要通过添加高分子助剂涂覆在集流体上制备成电极,高分子助剂的引入不仅增加了电极的内电阻和界面电阻,且导致电化学活性表面积大幅度降低,因而Co_3O_4电活性物质的电化学存储性能与理论值相差较远。针对上述问题,最近研究工作者采用水热法或电沉积法在电极集流体镍泡沫上直接生长电活性物质Co_3O_4,相对传统电极制备过程,不仅更简单,且不需要引入高分子助剂,降低电极的内电阻和界面电阻,增加了电化学活性表面积,有利于电极的电化学存储性能提高,在高性能电化学能量存储器领域具有广泛应用前景。针对Co_3O_4/镍泡沫复合电极材料制备及其在超级电容性能的研究现状进行了综述,为进一步设计和合成高性能超级电容器电极材料提供新方法和思路。Co_3O_4 has been considered to be one of the most attractive materials in terms of its high theoretical specific capacitance,low cost,natural abundance and environmental friendliness.Unfortunately,in most cases,the Co_3O_4 powder were coated on the current collector with the assistance of binder.The high contact resistance between Co_3O_4 powder and current collector and the nonconductive binder would greatly decrease the rate capability and poor cycle stability of supercapacitors.So,the experimental specific capacitance of Co_3O_4 powder was far lower than the theoretical specific capacitance.To overcome these problems,the Co_3O_4 electrode material and current collector Ni foam should be integrated together in depth rather than that electrode material is simply coated on the current collector by binder in order to enhance the active surface area and electrical conductivity of electrode material.Here,the development of Co_3O_4/Ni composite foam for application in supercapacitor was reviewed.The synthesis and properties of Co_3O_4/Ni composite foam were discussed in detail.These results were very important for further designing and synthesis of electrode material with high performace.

关 键 词：CO3O4 阵列结构 镍泡沫 超级电容器 

分 类 号：TM53[电气工程—电器]