NiCo2S4/Ni(OH)2 core-shell heterostructured nanotube arrays on carbon-fabric as high-performance pseudocapacitor electrodes

被引：45
作者：
Zhang, J. [1 ]
Gao, H. [1 ]
Zhang, M. Y. [1 ]
Yang, Q. [1 ]
Chuo, H. X. [1 ]
机构：
[1] Harbin Normal Univ, Sch Phys & Elect Engn, Key Lab Photon & Elect Bandgap Mat, Minist Educ, Harbin 150025, Peoples R China
来源：
APPLIED SURFACE SCIENCE | 2015年 / 349卷
基金：
中国国家自然科学基金;
关键词：
Pseudocapacitance; Ni(OH)(2); NiCo2S4; Nanotube; High electrical conductivity; NI FOAM; NICKEL FOAM; GRAPHENE; CONSTRUCTION; NETWORK; GROWTH; OXIDE;
D O I：
10.1016/j.apsusc.2015.05.084
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：
High-performance supercapacitor electrodes with a core-shell heterostructure of carbon-fabric/NiCo2S4/Ni(OH)(2) are rationally designed. The NiCO2S4 nanotube core synthesized by two step hydrothermal methods has a diameter of about 120 nm and a thickness of about 25 nm. The Ni(OH)(2) shell prepared by electrochemical deposition method is made up by the small Ni(OH)(2) ultrathin sheets. With this design and method, high specific capacitance of 2700 F/g at a current density of 1 mA/cm(2) is found from NiCO2S4/Ni(OH)(2) heterostructured arrays. These samples show energy density of 120 Wh/kg and power density of 0.4 kW/kg at a current density of 1 mA/cm(2), and good cycle stability with 78% capacitance retention after 2000 circles. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：870 / 875
页数：6
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