CuO/KCu_(7)S_(4)复合纳米材料的制备及其超级电容器性能  

Synthesis of CuO/KCu_(7)S_(4) Nanocomposite and Its Supercapacitor Performance

作　　者：吴丽婷 徐燕 薛永刚 张开友 叶少波 于佳鑫 李慧豪 WU Liting;XU Yan;XUE Yonggang;ZHANG Kaiyou;YE Shaobo;YU Jiaxin;Li Huihao(Key Laboratory of New Processing Technology for Nonferrous Metals and Materials of Ministry of Education,Guangxi Key Laboratory of Optical and Electronic Materials and Devices,College of Materials Science and Engineering,Guilin University of Technology,Guilin 541004,China)

机构地区：[1]桂林理工大学材料科学与工程学院,有色金属及材料加工新技术教育部重点实验室,广西光电材料与器件重点实验室,广西桂林541004

出　　处：《材料科学与工程学报》2021年第2期282-287,共6页Journal of Materials Science and Engineering

基　　金：广西自然科学基金资助项目(2016GXNSFBA380190,2018GXNSFAA138041);有色金属及材料加工新技术教育部重点实验室开放基金资助项目(14KF-10);桂林理工大学博士科研启动金和桂林理工大学大学生创新创业资助项目(201810596155)。

摘　　要：采用接替离子层吸附反应(SILAR)沉积法成功地在KCu_(7)S_(4)微米线上沉积CuO纳米片得到CuO/KCu_(7)S_(4)复合纳米材料,并应用于超级电容器的电极。通过对该纳米复合材料表征表明,随沉积次数增加,CuO的含量增加,该CuO为片状结构,均匀地分布于KCu_(7)S_(4)微米线上。在1A/g的电流密度下,沉积次数分别为0、20、40和60的样品比电容分别为10.04、25.52、30.84和40.92F/g。CuO/KCu_(7)S_(4)-60在0.7A/g的电流密度下比电容为47.6F/g,并且在5A/g的电流密度下进行1000次的循环充/放电测试后比电容增加到初始电容的117.29%。CuO/KCu_(7)S_(4) nanocomposite was successfully obtained by depositing CuO nanosheets on KCu_(7)S_(4) microwires by successive ionic layer adsorption and reaction(SILAR)method,and the nanocomposites were applied to supercapacitor electrode materials.The.nanocom posite was characterized and the characterization results showed that the CuO content of the nanocomposites increased with the increase of the deposition times,and the nanosheets like CuO were distributed on the KCu_(7)S_(4) microwires uniformly.According to the electrochemical performance comparison,the specific capacitance of the samples with the.deposition times of 0,20,40,and 60 was 10.04,25.52,30.84,and 40.92 F/g,respectively,at a current density of 1 A/g.Further electrochemical performance analysis showed that the specific capacitance of CuO/KCu_(7)S_(4)-60 was 47.6 F/g at a current density of 0.7 A/g.And the specific capacitance of CuO/KCu_(7)S_(4)-60 increased to 117.29% of the initial capacitance after 1000 cycles at a current density of 5 A/g.These results indicated that the CuO/KCu_(7)S_(4) nanocomposite have good application potential in the field of supercapacitors.

关 键 词：氧化铜 KCu_(7)S_(4) 超级电容器 化学沉积 

分 类 号：TB332[一般工业技术—材料科学与工程] TM538[电气工程—电器]