Crystalline NiCo2S4 nanotube array coated with amorphous NiCoxSy for supercapacitor electrodes

被引：94

作者：

Ding, Rui ^{[1
]}

Zhang, Mingyi ^{[1
]}

Yao, Yunhe ^{[1
]}

Gao, Hong ^{[1
]}

机构：

[1] Harbin Normal Univ, Sch Phys & Elect Engn, Minist Educ, Key Lab Photon & Elect Bandgap Mat, Harbin 150025, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2016年 / 467卷

基金：

中国国家自然科学基金;

关键词：

NiCo2S4; Nanoarrays; Nanotube; Supercapacitor; Hydrothermal; Core/shell; HIGH-PERFORMANCE SUPERCAPACITORS; SENSITIZED SOLAR-CELLS; NICKEL FOAM; ASYMMETRIC SUPERCAPACITORS; NANOSHEET ARRAYS; COBALT; PSEUDOCAPACITORS; NANOSTRUCTURES; GRAPHENE; DESIGN;

D O I：

10.1016/j.jcis.2015.12.057

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

Hierarchical NiCo2S4@NiCoxSy core/shell nanoarrays grown on carbon cloth were successfully synthesized via a two-step hydrothermal route and following an electrodeposition process. Compared with bare NiCo2S4, the electrochemical performance of NiCo2S4@NiCoxSy nanoarrays have been apparently improved, which shows areal capacitance as high as 3.9 F/cm(2) at a constant current density of 1 mA/cm(2). And the composite material exhibits excellent rate capability that a high areal capacitance of 2.9 F/cm(2) is still retaining as the current density increase to 50 mA/cm(2). The superior electrochemical performance can be attributed to the reasonably designed core/shell hierarchical structure of NiCo2S4@NiCoxSy nanoarrays, which would be promising for high-performance supercapacitor materials. (C) 2015 Elsevier Inc. All rights reserved.

引用

页码：140 / 147

页数：8

共 28 条

[1]

Highly conductive NiCo2S4 urchin-like nanostructures for high-rate pseudocapacitors [J].