Preparation and electrochemical investigation of the cobalt hydroxide carbonate/activated carbon nanocomposite for supercapacitor applications

被引：44

作者：

Masikhwa, Tshifhiwa M. ^{[1
]}

Dangbegnon, Julien K. ^{[1
]}

Bello, Abdulhakeem ^{[1
]}

Madito, Moshawe J. ^{[1
]}

Momodu, Damilola ^{[1
]}

Manyala, Ncholu ^{[1
]}

机构：

[1] Univ Pretoria, SARCHI Chair Carbon Technol & Mat, Inst Appl Mat, Dept Phys, ZA-0028 Pretoria, South Africa

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2016年 / 88卷

基金：

新加坡国家研究基金会;

关键词：

Cobalt hydroxide carbonates; Activated carbon; Supercapacitor application; Electrode stability; Energy storage; DOUBLE-LAYER CAPACITORS; ACTIVATED CARBON; ASYMMETRIC SUPERCAPACITOR; COMPOSITE ELECTRODES; THERMAL-CONVERSION; ENERGY-STORAGE; PERFORMANCE; OXIDE; NANOPARTICLES; NANOMATERIALS;

D O I：

10.1016/j.jpcs.2015.09.015

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cobalt hydroxide carbonate/activated carbon (AC) composite was successfully synthesized by hydrothermal method. Morphological characterizations of cobalt hydroxide carbonate/AC composite were carried out by scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the results show that the cobalt hydroxide carbonate nanorods are well dispersed on the AC. Due to the synergistic effects arising from cobalt hydroxide carbonate nanorods and AC, the electrochemical performances of pure cobalt hydroxide carbonate material is significantly improved by the addition of AC. The composite shows a specific capacitance of 301.44 F g(-1) at a current density of 1 A g(-1) in 6 M KOH electrolyte and exhibits good cycling stability. Based on the above results, the cobalt hydroxide carbonate/AC composite shows a considerable promise as electrode for electrochemical applications. Crown Copyright (C) 2015 Published by Elsevier Ltd. All rights reserved.

引用

页码：60 / 67

页数：8

共 48 条

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