期刊
APPLIED SURFACE SCIENCE
卷 428, 期 -, 页码 616-622出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.09.189
关键词
MoS2 nanowires/NiCo2O4 nanosheets; Asymmetric supercapacitor; Specific capacitance; Energy density
类别
资金
- National Natural Science Foundation of China [51602131]
- Natural Science Foundation of Jiangsu Province [BK20160526]
- Jiangsu Province Postdoctoral Science Foundation [1601059C]
- China Postdoctoral Science Foundation [2016M600368]
The hierarchical MoS2 nanowires/NiCo2O4 nanosheets (MS/NCO) supercapacitor electrode materials supported on Ni foam were synthesized by a two-step hydrothermal method. The capacitance was investigated by using various electrochemical methods including cyclic voltammetry, constant-current galvanostatic charge/discharge curves and electrochemical impedance spectroscopy. The MS/NCO networks show 7 times more capacitance (7.1 F cm(-2)) than pure NiCo2O4 nanosheets by CV at a scan rate of 2 mV s(-1). The specific capacitance of the assembled MS/NCO//active carbon (AC) asymmetric supercapacitor could reach up to 51.7 F g(-1) at a current density of 1.5 A g(-1). Also, the maximum energy density of 18.4 W h kg(-1) at a power density of 1200.2 W kg(-1) was achieved, with 98.2% specific capacitance retention after 8000 cycles. These exciting results exhibit potential application in developing energy storage devices with high energy density and high power density. (C) 2017 Published by Elsevier B.V.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据