Layer-by-Layer Engineered Co-Al Hydroxide Nanosheets/Graphene Multilayer Films as Flexible Electrode for Supercapacitor

被引：195

作者：

Dong, Xinyi ^{[1
]}

Wang, Lei ^{[1
]}

Wang, Dong ^{[1
]}

Li, Cheng ^{[1
]}

Jin, Jian ^{[1
]}

机构：

[1] Chinese Acad Sci, I LAB, Suzhou Inst Nanotech & Nanobion, Suzhou 215123, Peoples R China

来源：

LANGMUIR | 2012年 / 28卷 / 01期

基金：

中国国家自然科学基金;

关键词：

WALLED CARBON NANOTUBES; COMPOSITE FILMS; PERFORMANCE; ARCHITECTURE; ARRAYS; OXIDE;

D O I：

10.1021/la2038685

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Multilayer films of Co-Al layered double hydroxide nanosheets (Co-Al LDH-NS) and graphene oxide (GO) were fabricated through layer-by-layer (LBL) assembly. By using a three-electrode system, the electrochemical performances of the films were investigated to evaluate their potential as electrode materials to be used in flexible supercapacitor devices. The Co-Al LDH-NS/GO multilayer films exhibited a high specific capacitance of 880 F/g and area capacitance of 70 F/m(2) under the scan rate of 5 mV/s. And the film exhibited good cycle stability over 2000 cycles. After treating the films at 200 C in H(2) atmosphere, the specific capacitance and area capacitance were largely increased up to 1204 F/g and 90 F/m(2) due to partial reduction of GO. A flexible electrode by depositing Co-Al LDH-NS/GO multilayer film onto PET substrate was prepared to show the potential of Co Al LDH-NS/GO films for flexible energy storage.

引用

页码：293 / 298

页数：6

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