Hollow cubic double layer structured Cu7S4/NiS nanocomposites for high-performance supercapacitors

被引：45

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

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 39期

基金：

中国国家自然科学基金;

关键词：

SOLID-STATE SUPERCAPACITORS; COBALT SULFIDE; NI FOAM; ASYMMETRIC SUPERCAPACITORS; ELECTROCHEMICAL CAPACITOR; NANOWIRE ARRAYS; HIERARCHICAL STRUCTURES; HYDROTHERMAL SYNTHESIS; CONTROLLABLE SYNTHESIS; CATHODIC DEPOSITION;

D O I：

10.1039/c7ta05784a

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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.

引用

页码：20729 / 20736

页数：8

共 60 条

[1] Enhanced supercapacitance of multiwalled carbon nanotubes functionalized with ruthenium oxide [J].