Preparation of NiCo2S4 flaky arrays on Ni foam as binder-free supercapacitor electrode

被引：98
作者：
Yang, Zeheng [1 ,2 ]
Zhu, Xiao [1 ,2 ]
Wang, Kun [1 ,2 ]
Ma, Guo [1 ,2 ]
Cheng, He [1 ,2 ]
Xu, Feifei [1 ,2 ]
机构：
[1] Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China
[2] Anhui Key Lab Controllable Chem React & Mat Chem, Hefei 230009, Anhui, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 347卷
基金：
中国国家自然科学基金;
关键词：
NiCo2O4; NiCo2S4; Flaky array; Hydrothermal; Supercapacitor; HIGH-PERFORMANCE SUPERCAPACITORS; NANOWIRE ARRAYS; NANOTUBE ARRAYS; NICKEL FOAM; ASYMMETRIC SUPERCAPACITORS; HYBRID ELECTRODES; PSEUDOCAPACITORS; NANOSTRUCTURES; NANOPARTICLES; CONSTRUCTION;
D O I：
10.1016/j.apsusc.2015.04.160
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：
NiCo2S4 flaky structured arrays on nickel foam were prepared hydrothermally by means of an anionexchange method, with NiCo2O4 nanorod arrays as precursors, and were directly applied as a binder-free supercapacitor electrode. Such a 3D structured electrode combines the advantages of both one dimensional and two dimensional materials, and can effectively improve the electrochemical performance. As a result, the as-prepared NiCo2S4 flaky structure electrode shows much enhanced electrochemical performance, with a high specific capacitance (2044 Fg(-1) at 1 Ag-1) and good cycling stability (capacity retention of 77% after 2000 cycles), suggesting its promising application for electrochemical capacitors. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：690 / 695
页数：6
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