Hierarchically structured TiO2@MnO2 nanowall arrays as potential electrode material for high-performance supercapacitors

被引：59

作者：

Ramadoss, Ananthakumar ^{[1
]}

Kim, Sang Jae ^{[1
,2
,3
]}

机构：

[1] Jeju Natl Univ, Sci & Engn Coll, Fac Appl Energy Syst, Nanomat & Syst Lab, Cheju 690756, South Korea

[2] Jeju Natl Univ, Engn Coll, Dept Mechatron Engn, Nanomat & Syst Lab, Cheju 690756, South Korea

[3] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2014年 / 39卷 / 23期

基金：

新加坡国家研究基金会;

关键词：

Core-shell; Energy storage; Manganese dioxide; Supercapacitor; Titanium dioxide; Nanorods; CORE-SHELL NANOWIRES; TIO2 NANOTUBE ARRAYS; NANOSHEET CORE/SHELL ARRAYS; HETEROSTRUCTURE; MECHANISM; NANORODS; FOAM;

D O I：

10.1016/j.ijhydene.2014.05.118

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：

We have reported a facile route for the fabrication of TiO2@MnO2 core-shell nano-structures for use as an electrode material, using a simple hydrothermal process for supercapacitor applications. Field-emission scanning electron microscopy and transmission electron microscopy studies confirmed the formation of a MnO2 nanowall shell structure on the core of TiO2 nanorod surfaces. The nanostructured TiO2@MnO2 core-shell was used as an electrode material, which exhibited excellent electrochemical properties with an improved areal capacitance of 22.19 mF cm(-2) (TM-3) at a scan rate of 5 mV s(-1) in a 1-M Na2SO4 electrolyte solution. Moreover, the electrode material demonstrated excellent performance with long term cycling stability, by retaining 85% of its initial capacitance after 4000 cycles. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：12201 / 12212

页数：12

共 49 条

[31] Microwave-Assisted Synthesis of a Core-Shell MWCNT/GONR Heterostructure for the Electrochemical Detection of Ascorbic Acid, Dopamine, and Uric Acid [J].