Graphene-wrapped CNT@MoS2 hierarchical structure: synthesis, characterization and electrochemical application in supercapacitors
Sun TH(孙天华)1,2; Liu XH(刘晓红)1; Li ZP(李章朋)1; Ma LM(马立民)1; Wang JQ(王金清)1; Yang SR(杨生荣)1
刊名New Journal of Chemistry
2017
卷号41期号:15页码:7142-7150
ISSN号1144-0546
通讯作者刘晓红 ; 王金清
英文摘要

Layered transition metal dichalcogenides (TMDs) have attracted widespread attention for developing electrochemical energy storage due to their unique graphite-like structure and high theoretical capacity. However, the semiconductor character of TMDs affects their electrical conductivity, causing low specific capacitance, rapid capacity fading and poor cyclic stability. Herein, a hierarchical graphene-wrapped CNT@MoS2 (CMG) electrode material has been fabricated aiming at enhancing the conductivity and structural stability during continuous charge–discharge processes, thus improving its electrochemical properties. As a novel electrode material, the prepared CMG electrode delivers a high specific capacitance of 498 F g−1 and excellent long-term cycle-life stability (only 5.7% loss of its initial capacitance after 10 000 cycles at a high current density of 5 A g−1), as well as improved rate performance, indicating that such a composite material is an ideal electrode material for supercapacitors. Its outstanding electrochemical performance can be ascribed to an expanded interlayer spacing of MoS2 and its unique hierarchical architecture. More importantly, this method can be readily extended to the construction of other TMD-based electrodes which were hampered in electrochemical applications owing to their poor electrical conductivity.

学科主题材料科学与物理化学
收录类别SCI
资助信息the National Natural Science Foundation of China (No. 51502306;51575507)
语种英语
WOS记录号WOS:000406192800026
内容类型期刊论文
源URL[http://210.77.64.217/handle/362003/22214]  
专题兰州化学物理研究所_固体润滑国家重点实验室
作者单位1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lanzhou 730000, Gansu, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100080, Peoples R China
推荐引用方式
GB/T 7714
Sun TH,Liu XH,Li ZP,et al. Graphene-wrapped CNT@MoS2 hierarchical structure: synthesis, characterization and electrochemical application in supercapacitors[J]. New Journal of Chemistry,2017,41(15):7142-7150.
APA Sun TH,Liu XH,Li ZP,Ma LM,Wang JQ,&Yang SR.(2017).Graphene-wrapped CNT@MoS2 hierarchical structure: synthesis, characterization and electrochemical application in supercapacitors.New Journal of Chemistry,41(15),7142-7150.
MLA Sun TH,et al."Graphene-wrapped CNT@MoS2 hierarchical structure: synthesis, characterization and electrochemical application in supercapacitors".New Journal of Chemistry 41.15(2017):7142-7150.
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