Effect of annealing temperature on the supercapacitor behaviour of β-V2O5 thin films

被引：87

作者：

Jeyalakshmi, K. ^{[1
]}

Vijayakumar, S. ^{[2
]}

Nagamuthu, S. ^{[2
]}

Muralidharan, G. ^{[2
]}

机构：

[1] PSNA Coll Engn & Technol, Dept Phys, Dindigul 624622, India

[2] Deemed Univ, Gandhigram Rural Inst, Dept Phys, Gandhigram 624302, India

来源：

MATERIALS RESEARCH BULLETIN | 2013年 / 48卷 / 02期

关键词：

Thin films; Sol-gel chemistry; Electrochemical measurements; Impedance spectroscopy; VANADIUM PENTOXIDE FILMS; ELECTROCHEMICAL PROPERTIES; OXIDE; INTERCALATION; COMPOSITES; NIO;

D O I：

10.1016/j.materresbull.2012.11.054

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Vanadium pentoxide thin films are prepared via sol-gel spin coating method. The films coated on FTO and glass substrates are treated at different temperatures ranging from 250 degrees C to 400 degrees C. The structural, optical and electrochemical investigations are made. X-ray diffraction analysis shows the film to be composed of V2O5 in beta-phase up to annealing temperature of 350 degrees C and at 400 degrees C the structural transformation to alpha-phase is observed. FTIR spectrum shows the formation of V-O bond. The SEM images reveal the formation of nanopores. Optical absorption studies indicate a band gap of 2.2-2.4 eV. The supercapacitor behaviour is studied using cyclic voltammetery technique and electrochemical impedance analysis. The vanadium pentoxide films annealed at 300 degrees C for an hour exhibits a maximum specific capacitance of 346 F g(-1) at a scan rate of 5 mV s(-1). (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：760 / 766

页数：7

共 35 条

[11] PREPARATION AND PROPERTIES OF CRYSTALLINE AND AMORPHOUS VANADIUM PENTOXIDE [J].

KENNEDY, TN ;

HAKIM, R ;

MACKENZIE, JD .

MATERIALS RESEARCH BULLETIN, 1967, 2 (02) :193-+

[12] Pseudocapacitive properties of electrochemically prepared vanadium oxide on carbon nanotube film substrate [J].

Kim, Il-Hwan ;

Kim, Jae-Hong ;

Cho, Byung-Won ;

Kim, Kwang-Bum .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (08) :A1451-A1458

[13] Principles and applications of electrochemical capacitors [J].

Kötz, R ;

Carlen, M .

ELECTROCHIMICA ACTA, 2000, 45 (15-16) :2483-2498

[14] Amorphous V2O5/carbon composites as electrochemical supercapacitor electrodes [J].

Kudo, T ;

Ikeda, Y ;

Watanabe, T ;

Hibino, M ;

Miyayama, M ;

Abe, H ;

Kajita, K .

SOLID STATE IONICS, 2002, 152 :833-841

[15] Synthesis of vanadium pentoxide powders with enhanced surface-area for electrochemical capacitors [J].

Lao, Z. J. ;

Konstantinov, K. ;

Tournaire, Y. ;

Ng, S. H. ;

Wang, G. X. ;

Liu, H. K. .

JOURNAL OF POWER SOURCES, 2006, 162 (02) :1451-1454

[16] Solid state synthesis of hydrous ruthenium oxide for supercapacitors [J].

Liang, Yan-Yu ;

Li, Hu Lin ;

Zhang, Xiao-Gang .

JOURNAL OF POWER SOURCES, 2007, 173 (01) :599-605

[17] Quasi-one-dimensional metal oxide materials - Synthesis, properties and applications [J].

Lu, Jia Grace ;

Chang, Paichun ;

Fan, Zhiyong .

MATERIALS SCIENCE & ENGINEERING R-REPORTS, 2006, 52 (1-3) :49-91

[18] Impact of substrate temperature on the microstructure, electrical and optical properties of sputtered nanoparticle V2O5 thin films [J].

Luo, Zhenfei ;

Wu, Zhiming ;

Xu, Xiangdong ;

Du, Mingjun ;

Wang, Tao ;

Jiang, Yadong .

VACUUM, 2010, 85 (02) :145-150

[19] Characterization of laser-ablated V2O5 thin films [J].

Madhuri, KV ;

Rao, KS ;

Naidu, BS ;

Hussain, OM ;

Pinto, R .

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, 2002, 13 (07) :425-432

[20] Nanoscale morphology dependent pseudocapacitance of NiO: Influence of intercalating anions during synthesis [J].

Meher, Sumanta Kumar ;

Justin, P. ;

Rao, G. Ranga .

NANOSCALE, 2011, 3 (02) :683-692

← 1 2 3 4 →