期刊
JOURNAL OF POWER SOURCES
卷 251, 期 -, 页码 338-343出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2013.11.070
关键词
Microwave-assisted; Hybrid hydroxides; Nanosheet; Electrochemical; Supercapacitors
资金
- office of Vice President for Research at NMSU
- NASA [GR0003400]
- U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering
- U.S. Department of Energy's National Nuclear Security Administration [DE-AC04-94AL85000]
- NSF/CMMI NanoManufacturing Program [1131290]
Hybrid CoxNi1-x(OH)(2) nanosheets have been successfully synthesized via a facile microwave-assisted synthetic route. The size of CoxNi1-x(OH)(2) nanosheets decreases with the increase of nickel amount; however, the layered crystal structure can be maintained at any ratios of Co:Ni due to the chemical and physical similarities between these two elements. The lattice spacing of the hexagonal nanosheets can be slightly varied by adjusting the ratios of Co:Ni. The hybrid Co0.2Ni0.8(OH)(2) hexagonal nanosheets deliver a high capacity of above 1170 F g(-1) at a current density of 4 A g(-1). The higher specific capacitance of Co0.2Ni0.8(OH)(2) nanosheets than their monometallic counterpart could be attributed to the enhancement of the electro-active sites participated in the redox reaction due to the possible valence interchange or charge hopping between Co and Ni cations. These results indicate the importance of layered hydroxide nanosheets with tuned transition-metal composition for high-performance energy storage devices. (C) 2013 Elsevier B.V. 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