Hierarchical mushroom-like CoNi2S4 arrays as a novel electrode material for supercapacitors

被引：277

作者：

Mei, Lin ^{[1
]}

Yang, Ting ^{[1
]}

Xu, Cheng ^{[1
]}

Zhang, Ming ^{[1
]}

Chen, Libao ^{[1
]}

Li, Qiuhong ^{[1
]}

Wang, Taihong ^{[1
]}

机构：

[1] Hunan Univ, Key Lab Micronano Optoelect Devices, State Key Lab Chemobiosensing & Chemometr, Minist Educ, Changsha, Hunan, Peoples R China

来源：

NANO ENERGY | 2014年 / 3卷

基金：

高等学校博士学科点专项科研基金; 中国国家自然科学基金;

关键词：

Hierarchical structure; CoNi2S4; Supercapacitor; Electrode material; HIGH-PERFORMANCE; ELECTROCHEMICAL PERFORMANCE; CONTROLLABLE SYNTHESIS; FACILE SYNTHESIS; NANOWIRES; OXIDE; NANOSTRUCTURES; NANOSHEETS; GROWTH; METAL;

D O I：

10.1016/j.nanoen.2013.10.004

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：

A novel hierarchical CoNi2S4 arrays consisting of uniformly coverage of thin sheets and numerous nanobranches on Ni foam has been successfully prepared via a simple one-step hydrothermal route without any surfactant and template. The CoNi2S4 arrays were investigated as electrode material for supercapacitors. The ordered CoNi2S4 arrays self-grown on Ni foam provided an excellent conducting connection with electrode substrates. Meanwhile, the thin sheets on top of the arrays is interconnected, forming a highly specific surface area. The unique architecture has constructed many independent nanospaces to participate in electrochemical reaction. Detailed electrochemical characterization showed the novel structure has an excellent electrochemical capacitance, high rate performance and high areal capacitance. The cost-effective synthesis of CoNi2S4 arrays and remarkable electrochemical performance provided great potential for this type of hybrid hierarchical nanostructures in supercapacitors. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：36 / 45

页数：10

共 35 条

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Synthesis of Surface-Functionalized WS2 Nanosheets and Performance as Li-Ion Battery Anodes [J].