期刊
JOURNAL OF COLLOID AND INTERFACE SCIENCE
卷 542, 期 -, 页码 15-22出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jcis.2019.01.114
关键词
Expanded graphite; In-situ electrodeposition; Nickel-cobalt double hydroxides; Porous nanorods; Supercapacitors
资金
- Open Project of Fuel Cells AMP
- Hybrid Electric Power Key Lab, Chinese Academy of Sciences [KLFC201702]
- International Technology Collaboration of Chengdu Science and Technology Division
- State Key Lab of Catalysis [N-14-1]
- Innovative Research Team of Southwest Petroleum University [2015CXTD04]
Nickel-cobalt double hydroxides (Ni-Co DHs) combined with cost-effectively commercial expanded graphite (EG) was prepared via a facile in situ electrodeposition in mixed solvents of N,N-dimethylformamide and water. By simply adjust molar ratios of Ni2+/Co2+ a Ni-Co DHs/EG electrode in which Ni-Co DHs showing a porous-nanorod microstructure was fabricated. Thanks to synergistic effects between Ni(OH)(2) and Co(OH)(2) as well as the unique morphology of porous nanorods, an optimal Ni-Co DHs/EG electrode with a total mass loading of 4.0 mg cm(-2) can deliver a specific capacitance of 1246 F g(-1) at 1 A g(-1), a rate capability of 91.8% as the discharging current density increasing from 1 to 10 A g(-1), and a capacitance retention of 80.1% after 1000 cycles charged/discharged at 10 A g(-1). Thus we can draw a conclusion that the Ni-Co DHs/EG electrode possesses a satisfactory specific capacitance, extremely superior rate performance, and good cycle stability, therefore it can be very competitive for practical applications in supercapacitors. (C) 2019 Elsevier Inc. All rights reserved.
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