CoO@ Ni-Co-S无粘结剂电极材料非对称型超级电容器性能研究  

Study on the properties of CoO@ Ni-Co-S binder free electrode materials for asymmetric supercapacitors

作　　者：杨景海[1,2] 王三龙 YANG Jing-hai;WANG San-long(Key Laboratory of Functional Materials Physics and Chemistry of the Ministryof Education,Jilin Normal University,Changchun 130103,China;College of Physics,Jilin Normal University,Siping 136000,China)

机构地区：[1]吉林师范大学功能材料物理与化学教育部重点实验室,吉林长春130103 [2]吉林师范大学物理学院,吉林四平136000

出　　处：《吉林师范大学学报（自然科学版）》2019年第2期1-7,共7页Journal of Jilin Normal University:Natural Science Edition

基　　金：国家自然科学基金项目(61775081;61605059);吉林省科技发展计划项目(20180414008GH);吉林省教育厅"十三五"科学技术项目(JJKH20180784KJ)

摘　　要：采用水热法和电化学沉积法在泡沫镍上制备了CoO@ Ni-Co-S电极材料,并对其进行了SEM、XRD、XPS表征和电化学性能测试.结果表明:本材料具有较高的电化学性能,在电流密度为1 A/g时,比电容为1 352 F/g;电流密度为10 A/g时,比电容仍能达到1 055 F/g;进一步通过稳定性测试研究发现,在电流密度为2 A/g下充放电2 000次,电容保留率为87%.以CoO@ Ni-Co-S复合材料作为正极,活性炭作为负极构筑非对称型超级电容器,该装置在电流密度为1 A/g时,比电容为209 F/g,操作电压窗口为1. 7 V,功率密度为2. 99 k W/kg时,能量密度可达39. 7 Wh/kg.In this paper,the CoO@ Ni=Co=S electrode materials were prepared by hydrothermal method and electrochemical deposition method. And the material showed the high electrochemical properties. The specific capacitance was 1 352 F/ g and 1 055 F/ g when the current density was 1 A/ g and 10 A/ g,respectively. The stability tests showed that the capacitor retention rate was 87% after 2 000 cycles at 2 A/ g. The asymmetric supercapacitor (ASC) was assemble with the NF@ CoO @ Ni=Co=S as the positive electrode material and commercial activated carbon ( AC) as the negative. When the current density was 1 A/ g, the specific capacitance and the operating voltage was 209 F/ g and 1. 7 V,respectively. At the same time?the power density and energy density was 2. 99 kW/ kg and 39. 7 Wh/ kg,respectively.

关 键 词：水热法 电化学沉积法 非对称型超级电容器 能量密度 功率密度 

分 类 号：O646[理学—物理化学]