Synthesis of porous NiS nanoflake arrays by ion exchange reaction from NiO and their high performance supercapacitor properties

被引:94
作者
Yan, Xiaoyan [1 ]
Tong, Xili [2 ]
Ma, Lei [1 ]
Tian, Yuming [1 ]
Cai, Yuesheng [1 ]
Gong, Changwei [1 ]
Zhang, Mingang [1 ]
Liang, Liping [1 ]
机构
[1] Taiyuan Univ Sci & Technol, Inst Mat Sci & Engn, Taiyuan 030024, Peoples R China
[2] Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Peoples R China
基金
山西省青年科学基金;
关键词
Porous materials; Thin films; Nickel sulfide; Ion exchange reaction; Supercapacitors; COBALT SULFIDE; ELECTRODE MATERIAL; NICKEL; NANOSTRUCTURE; DEPOSITION; SPHERES; FILM;
D O I
10.1016/j.matlet.2014.03.067
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Metal sulfides have emerged as a new class of promising active material for supercapacitors. Porous NiS nanoflake arrays are successfully synthesized by a facile solution-based ion exchange reaction (IER) method based on preformed chemical bath deposition (CBD) derived NiO nanoflake arrays. NiS nanoflake arrays preserve the morphology of precursor-NiO nanoflake arrays and grow vertically to the substrates. As cathode of supercapacitors, NiS nanoflake arrays exhibit outstanding electrochemical performances with a high specific capacitance of 718 F g(-1) at 2 A g(-1) and good cycle performance and capacity retention (593 F g(-1) after 3000 cycles at 2 A g(-1)). (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:133 / 136
页数:4
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