摘要
采用溶剂热法以Ni Cl2·6H2O为镍源,乙醇为溶剂制备Ni/CNTs前驱体,在水热反应条件下,用Na2S2O3·5H2O对Ni/CNTs前驱体进行硫化,得到NS/CNTs复合材料。对其电化学性能进行测试,NS/CNTs复合材料在1 A·g-1电流密度下的比电容可达533.33 F·g-1,经1000次循环充放电后,比电容保持率为42.50%。相较于NS纳米片(146.67 F·g-1和27.27%),NS/CNTs复合材料的电化学性能得到了显著提升,表明CNTs的加入能明显改善镍硫化物的电化学性能。
Firstly,Ni/CNTs precursor was synthesized using Ni Cl2·6H2O as nickel source and ethanol as solvent by solvothermal method.And then in hydrothermal reaction conditions,Ni/CNTs precursor was vulcanized by Na2S2O3·5H2O to successfully obtain NS/CNTs composites.The specific capacitance of NS/CNTs composites reach 533.33 F·g-1at a current density of 1 A·g-1,and 42.50%of the specific capacitance is maintained after 1000 cycles.Compared with NS nanosheets(146.67 F·g-1and 27.27%),the electrochemical properties of NS/CNTs composites have been greatly improved.The results indicate that the addition of CNTs can effectively enhance the electrochemical properties of nickel sulfides.
作者
雷馨宇
李牟
董香伶
关晓辉
LEI Xinyu;LI Mu;DONG Xiangling;GUAN Xiaohui(School of Chemical Engineering,Northeast Electric Power University,Jilin 132000,China)
出处
《人工晶体学报》
EI
CAS
北大核心
2020年第1期73-78,共6页
Journal of Synthetic Crystals
基金
国家自然科学基金(51672040)
吉林省教育厅科学技术研究项目(JJKH20180429KJ)
吉林市科技局创新项目(201750228)
关键词
镍硫化物
碳纳米管
超级电容器
电极材料
nickel sulfide
carbon nanotube
supercapacitor
electrode material