Electrosynthesised Metal (Ni, Fe, Co) Oxide Films on Single-Walled Carbon Nanotube Platforms and Their Supercapacitance in Acidic and Neutral pH Media

被引：26

作者：

Adekunle, Abolanle S. ^{[1
]}

Ozoemena, Kenneth I. ^{[1
,2
]}

机构：

[1] Univ Pretoria, Dept Chem, ZA-0002 Pretoria, South Africa

[2] CSIR, Energy & Proc Unit, ZA-0001 Pretoria, South Africa

来源：

ELECTROANALYSIS | 2011年 / 23卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

SWCNT-metal oxide nanocomposites; Electrodeposition; Supercapacitance; Cyclic voltammetry; Impedance spectroscopy; ELECTROCHEMICAL PROPERTIES; ELECTRODE MATERIAL; NICKEL; POLYPYRROLE; COMPOSITE; MICROSTRUCTURE; PERFORMANCE; BEHAVIOR; CHARGE;

D O I：

10.1002/elan.201000597

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Supercapacitive properties of Single-walled carbon nanotubes/metal oxides nanocomposites (SWCNT-MO where M=Ni, Fe, Co) have been described. The SWCNT-MO nanocomposites was confirmed with SEM, EDX and XPS techniques. Supercapacitive properties of the modified electrodes in H2SO4 and Na2SO4 electrolytes was investigated using cyclic voltammetry (CV), galvanostatic constant current charge-discharge (CD) and the electrochemical impedance spectroscopy (EIS) techniques. SWCNT-NiO nanocomposite modified electrodes gave better supercapacitive performance with a specific capacitance of 186 mF cm(-2) (or 928 F g(-1)). This value compared quite favourably and even higher than values hitherto reported in several literature.

引用

页码：971 / 979

页数：9

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