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
收藏
页码：12201 / 12212
页数：12
相关论文
共 49 条
[41]   Electrochromism of rutile nanowires, vertically aligned along the [001] direction, due to alkali metal ion intercalation [J].
Yang, Min-Han ;
Chen, Ting-Ting ;
Wang, Yu-Shiuan ;
Chiu, Hsin-Tien ;
Lee, Chi-Young .
JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (46) :18738-18743
[42]   Hydrogenated ZnO Core-Shell Nanocables for Flexible Supercapacitors and Self-Powered Systems [J].
Yang, Peihua ;
Xiao, Xu ;
Li, Yuzhi ;
Ding, Yong ;
Qiang, Pengfei ;
Tan, Xinghua ;
Mai, Wenjie ;
Lin, Ziyin ;
Wu, Wenzhuo ;
Li, Tianqi ;
Jin, Huanyu ;
Liu, Pengyi ;
Zhou, Jun ;
Wong, Ching Ping ;
Wang, Zhong Lin .
ACS NANO, 2013, 7 (03) :2617-2626
[43]   Hierarchical Co3O4 nanosheet@nanowire arrays with enhanced pseudocapacitive performance [J].
Yang, Qiu ;
Lu, Zhiyi ;
Chang, Zheng ;
Zhu, Wei ;
Sun, Jiaqiang ;
Liu, Junfeng ;
Sun, Xiaoming ;
Duan, Xue .
RSC ADVANCES, 2012, 2 (04) :1663-1668
[44]   Vertically aligned mixed V2O5-TiO2 nanotube arrays for supercapacitor applications [J].
Yang, Yang ;
Kim, Doohun ;
Yang, Min ;
Schmuki, Patrik .
CHEMICAL COMMUNICATIONS, 2011, 47 (27) :7746-7748
[45]   Preparation and characterization of aligned carbon nanotube-ruthenium oxide nanocomposites for supercapacitors [J].
Ye, JS ;
Cui, HF ;
Liu, X ;
Lim, TM ;
Zhang, WD ;
Sheu, FS .
SMALL, 2005, 1 (05) :560-565
[46]   Hierarchical NiCo2O4@MnO2 core-shell heterostructured nanowire arrays on Ni foam as high-performance supercapacitor electrodes [J].
Yu, Le ;
Zhang, Genqiang ;
Yuan, Changzhou ;
Lou, Xiong Wen .
CHEMICAL COMMUNICATIONS, 2013, 49 (02) :137-139
[47]  
Yu MP, 2013, INT J ELECTROCHEM SC, V8, P2313
[48]   TiO2@C core-shell nanowires for high-performance and flexible solid-state supercapacitors [J].
Zheng, Huimin ;
Zhai, Teng ;
Yu, Minghao ;
Xie, Shilei ;
Liang, Chaolun ;
Zhao, Wenxia ;
Wang, Shing Chi Ian ;
Zhang, Zishou ;
Lu, Xihong .
JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (02) :225-229
[49]   Electrochemically Self-Doped TiO2 Nanotube Arrays for Supercapacitors [J].
Zhou, He ;
Zhang, Yanrong .
JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (11) :5626-5636
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