文献类型：期刊文献

英文题名：Hollow cubic double layer structured Cu7S4/NiS nanocomposites for high-performance supercapacitors

作者：Cao, Hongliang[1,2];Wang, Xiang[1];Chen, Xin[1];Liu, Haiyang[1];Zheng, Junsheng[3];Zhou, Wangfan[1]

机构：[1]East China Univ Sci & Technol, Shanghai Key Lab Adv Polymer Mat, Sch Mat Sci & Engn, Key Lab Ultrafine Mat,Minist Educ, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Biomed Nanotechnol Ctr, State Key Lab Bioreactor Engn, Shanghai 200237, Peoples R China;[3]Tongji Univ, Sch Automot Studies, Clean Energy Automot Engn Ctr, Jiading Campus,4800 Caoan Rd, Shanghai 201804, Peoples R China

年份：2017

卷号：5

期号：39

起止页码：20729

外文期刊名：JOURNAL OF MATERIALS CHEMISTRY A

收录：;EI(收录号：20174204275530);WOS:【SCI-EXPANDED(收录号:WOS:000412800300023)】；

基金：The support from the Shanghai Leading Academic Discipline Project (B502), Shanghai Key Laboratory Project (08DZ2230500) and Shanghai Pujiang Program (13PJ1401700) is acknowledged. We also acknowledge the support form National Natural Science Foundation of China, Grant No. 51777140.

语种：英文

外文关键词：Supercapacitor - Copper compounds - Nanocomposites - Nickel sulfates - Capacitance

摘要：A double layer hollow structured Cu7S4/NiS material is synthesized using a self-generated sacrificial template method, as an electrode material for supercapacitors. Cu7S4/NiS composites with three different particle sizes are synthesized and tested, which exhibited high specific capacitances of 1204 F g(-1), 1028 F g(-1) and 857 F g(-1), respectively, at a current density of 1 A g(-1). The specific capacitance of the nanocomposites remained at 945.5 F g(-1) (85.8%), 719.2 F g(-1) (84.32%) and 558.5 F g(-1) (80.13%) levels after 1000 cycles, respectively, at a current density of 4 A g(-1), showing good cycle stability. Compared with the pure NiS and Cu7S4, the development of the hollow Cu7S4/NiS composites is demonstrated to be effective in enhancing the supercapacitive performance.