Nickel Cobalt Oxide-Single Wall Carbon Nanotube Composite Material for Superior Cycling Stability and High-Performance Supercapacitor Application

被引：287

作者：

Wang, Xu ^{[1
]}

Han, Xuanding ^{[1
]}

Lim, Mengfang ^{[1
]}

Singh, Nandan ^{[1
]}

Gan, Chee Lip ^{[1
]}

Jan, Ma ^{[1
]}

Lee, Pooi See ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Mat Sci & Engn, Singapore 639798, Singapore

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2012年 / 116卷 / 23期

基金：

新加坡国家研究基金会;

关键词：

ELECTROCHEMICAL ENERGY-STORAGE; NANOWIRE ARRAYS; ELECTRODES; CAPACITANCE; AEROGELS; DEVICES; DESIGN; NIO;

D O I：

10.1021/jp3028353

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：

The electron conductivity of electrode material has always been a problem that hinders the practical application of supercapacitor. In this contribution, we report a facile synthesis of highly conductive nickel cobalt oxide-single wall carbon nanotube (NiCo2O4-SWCNT) nanocomposite by controlled hydrolysis process in ethanol-water mixed solvent. Ultrafine NiCo2O4 nanocrystals with a diameter around 6-10 nm are formed on the functionalized SWCNT bundles. This novel material not only exhibits a high specific capacitance of 1642 F g(-1) within a 0.45 V potential range but also shows an excellent cycling stability of 94.1% retention after 2000 cycles at high mass loading. Our method provides a promising facile and high-performance strategy for supercapacitor electrode application.

引用

页码：12448 / 12454

页数：7

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