One step hydrothermal synthesis of 3D CoS2@MoS2-NG for high performance supercapacitors

被引：26
|
作者：
Meng, Qi [1 ]
Chen, Yizhi [1 ]
Zhu, Wenkun [1 ]
Zhang, Ling [1 ]
Yang, Xiaoyong [1 ]
Duan, Tao [1 ]
机构：
[1] Southwest Univ Sci & Technol, Sichuan Civil Mil Integrat Inst, Sichuan Coinnovat Ctr New Energet Mat, Mianyang 621010, Sichuan, Peoples R China
来源：
NANOTECHNOLOGY | 2018年 / 29卷 / 29期
基金：
中国国家自然科学基金;
关键词：
nanocomposites; energy storage and conversion; hydrothermal; MoS2; CoS2; graphene; METALLIC MOS2; CARBON;
D O I：
10.1088/1361-6528/aac25f
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A three-dimensional (3D) MoS2 coated CoS2-nitrogen doped graphene (NG) (CoS2@MoS2-NG) hybrid has been synthesized by a one step hydrothermal method as supercapacitor (SC) electrode material for the first time. Such a composite consists of NG embedded with stacked CoS2@MoS2-NG sheets. With a 3D skeleton, it prevents the agglomeration of CoS2@MoS2 nanoparticles, resulting in sound conductivity, rich porous structures and a large surface area. The results indicate that CoS2@MoS2-NG has higher specific capacitance (198 F g(-1) at 1 A g(-1)), better rate performance (with about 56.57% from 1 to 16 A g(-1)) and an improved cycle stability (with about 96.97% after 1000 cycles). It is an ideal candidate for SC electrode materials.
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页数：6
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