Cobalt sulfide @ CNT-CNF for high-performance asymmetric supercapacitor

被引：6
|
作者：
Zhou, Yongsheng [1 ,2 ]
Jin, Jiang [3 ]
Zhou, Xuanren [4 ]
Liu, Fang [1 ]
Zhou, Ping [1 ]
Zhu, Yingchun [2 ,5 ]
Xu, Bingshe [6 ]
机构：
[1] Anhui Sci & Technol Univ, Coll Chem & Mat Engn, Bengbu 233030, Peoples R China
[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Inorgan Coating Mat, Shanghai 200050, Peoples R China
[3] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China
[4] Huizhou BYD Elect Co Ltd, Huizhou 516083, Peoples R China
[5] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
[6] Taiyuan Univ Technol, Minist Educ, Key Lab Interface Sci & Engn Adv Mat, Taiyuan 030024, Shanxi, Peoples R China
来源：
IONICS | 2019年 / 25卷 / 08期
关键词：
Carbon nanotube; Carbon nanofiber; Cobalt sulfide; Nanocomposite; Supercapacitor; NANOTUBES;
D O I：
10.1007/s11581-019-03085-3
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 cobalt sulfide encapsulated within carbon nanotube-carbon nanofiber (Co9S8@CNT-CNF) nanohybrid electrode is designed and prepared. The physicochemical characterization such as X-ray diffraction (XRD) and electron microscopy revealed the formation of Co9S8@CNT-CNF. The specific capacitance of Co9S8@CNT-CNF is 1656Fg(-1) at 1Ag(-1) with good electrochemical cycle stability (92.6% up to 10,000cycles). The Co9S8@CNT-CNF electrode exhibits a maximum power density of 8.83kWkg(-1) with an energy density of 65Whkg(-1), while a maximum energy density of 175Whkg(-1) is attained at a power density of 463Wkg(-1). This impressive electrochemical performance of the Co9S8@CNT-CNF composite indicated significant potential for application in high-power and energy-storage devices.
引用
收藏
页码：4031 / 4035
页数：5
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