钴掺杂氧化镍纳米花球的制备及其超级电容器性能研究  

Study on the Preparation of Cobalt-doped Nickel Oxide Nanospheres and the Properties for Supercapacitors

作　　者：安静 周洁 刘毓芳[1] 董静 AN Jing;ZHOU Jie;LIU Yu-fang;DONG Jing(Department of Chemistry,Jinzhong University,Jinzhong Shanxi,030619,China;Institute of Molecular Science,shanxi University,Taiyuan Shanxi,030006,China)

机构地区：[1]晋中学院化学化工系,山西晋中030619 [2]山西大学分子科学研究所,山西太原030006

出　　处：《晋中学院学报》2021年第3期8-12,共5页Journal of Jinzhong University

基　　金：国家级大学生创新创业项目“针状氧化镍的制备及超级电容器性能测试”(2018565)。

摘　　要：采用水热法和高温煅烧法合成了钴掺杂氧化镍纳米花球作为超级电容器电极材料.采用扫描电子显微镜(SEM)和X-射线衍射仪(XRD)对该材料的晶体结构、表面、化学组成进行表征,用电化学工作站测试其电化学性能.结果表明,钴的掺杂使氧化镍产生更多的活性位点,导电性和可逆性均有明显提升,在电流密度为3A·g^(-1)时,比容量由111.36 F·g^(-1)提高到153.18F·g^(-1)(3A·g^(-1)).Cobalt-doped nickel oxide nanospheres were synthesized by hydrothermal method and high temperature calcination method as electrode material for supercapacitors.The crystal structure,surface and chemical composition of the material were characterized by scanning electron microscopy(SEM)and X-ray diffractometry(XRD).The electrochemical properties of the material were tested by electrochemistry workstation.The results show that the doping of cobalt produces more active sites,and the conductivity and reversibility of nickel oxide are significantly improved.When the current density is 3A·g^(-1),the specific capacity is increased from 111.36 F·g^(-1) to 153.18 F·g^(-1)(3A·g^(-1)).

关 键 词：钴掺杂氧化镍纳米花球 超级电容器 电极材料 电化学性能 

分 类 号：O157[理学—数学]