Electrospun Porous NiCo2O4 Nanotubes as Advanced Electrodes for Electrochemical Capacitors

被引：250

作者：

Li, Linlin ^{[1
,2
]}

Peng, Shengjie ^{[1
]}

Cheah, Yanling ^{[1
]}

Teh, Peifen ^{[1
]}

Wang, Jin ^{[1
]}

Wee, Grace ^{[1
]}

Ko, Yahwen ^{[1
]}

Wong, Chuiling ^{[1
]}

Srinivasan, Madhavi ^{[1
,2
]}

机构：

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

[2] Nanyang Technol Univ, TUM CREATE Ctr Electromobil, Singapore 637459, Singapore

来源：

CHEMISTRY-A EUROPEAN JOURNAL | 2013年 / 19卷 / 19期

基金：

新加坡国家研究基金会;

关键词：

electrochemical capacitors; electrochemical performance; electrochemistry; electrospinning; nanostructures; porous NiCo2O4 nanotubes; SOL-GEL PROCESS; HIGH-PERFORMANCE; NANOFIBERS; SUPERCAPACITOR; FABRICATION; COMPOSITE; NANOSTRUCTURES; NANOWIRES; STORAGE; ARRAYS;

D O I：

10.1002/chem.201204153

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Novel, porous NiCo2O4 nanotubes (NCO-NTs) are prepared by a single-spinneret electrospinning technique followed by calcination in air. The obtained NCO-NTs display a one-dimensional architecture with a porous structure and hollow interiors. The effect of precursor concentration on the morphologies of the products is investigated. Due to their unique structure, the prepared NCO-NT electrode exhibits a high specific capacitance (1647 Fg(-1) at 1 Ag-1), excellent rate capability (77.3% capacity retention at 25 Ag-1), and outstanding cycling stability (6.4% loss after 3000 cycles), which indicates it has great potential for high-performance electrochemical capacitors. The desirable enhanced capacitive performance of NCO-NTs can be attributed to the relatively large specific surface area of these porous and hollow one-dimensional nanostructures.

引用

页码：5892 / 5898

页数：7

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