Ni(OH)2 nanosheets grown on graphene-coated nickel foam for high-performance pseudocapacitors

被引：64

作者：

Xiao, T. ^{[1
]}

Hu, X. ^{[1
]}

Heng, B. ^{[1
]}

Chen, X. ^{[1
]}

Huang, W. ^{[1
]}

Tao, W. ^{[1
]}

Wang, H. ^{[1
]}

Tang, Y. ^{[1
]}

Tan, X. ^{[2
]}

Huang, X. ^{[2
]}

机构：

[1] Cent China Normal Univ, Coll Phys Sci & Technol, Inst Nanosci & Technol, Wuhan 430079, Peoples R China

[2] China Three Gorges Univ, Res Inst New Energy, Yichang 443002, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 549卷

关键词：

Graphene; Ni(OH)(2); Nanosheets; Pseudocapacitors; CHEMICAL-VAPOR-DEPOSITION; ELECTROCHEMICAL CAPACITORS; ENERGY-STORAGE; SUPERCAPACITORS; COMPOSITES;

D O I：

10.1016/j.jallcom.2012.09.028

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：

This paper reports a new two-step approach for growing hybrid Ni(OH)(2)/graphene structure on nickel foam for the first time. Firstly, graphene was synthesized on nickel foam, which was used both as catalyst and template, by a CVD method. Then the three-dimensional network structured Ni(OH)(2) nanosheets were deposited on the graphene-coated nickel foam by a hydrothermal method. Electrochemical tests of this kind of electrode show a high specific capacitance (1440 F/g) and excellent cycling performance of similar to 100% capacitance retention over 2000 cycles in a 1 M NaOH electrolyte. The presence of the graphene is critical to the high-performance of the electrode, and the experiment using the Ni(OH)(2) on bare nickel foam exhibited a much worse cycling performance. (C)2012 Elsevier B.V. All rights reserved.

引用

页码：147 / 151

页数：5

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