Synthesis of vanadium pentoxide powders with enhanced surface-area for electrochemical capacitors

被引：155

作者：

Lao, Z. J. ^{[1
]}

Konstantinov, K. ^{[1
]}

Tournaire, Y. ^{[1
]}

Ng, S. H. ^{[1
]}

Wang, G. X. ^{[1
]}

Liu, H. K. ^{[1
]}

机构：

[1] Univ Wollongong, Inst Supercond & Elect Mat, Wollongong, NSW 2522, Australia

来源：

JOURNAL OF POWER SOURCES | 2006年 / 162卷 / 02期

基金：

澳大利亚研究理事会;

关键词：

electrochemical capacitor; specific surface-area; vanadium pentoxide; co-precipitation;

D O I：

10.1016/j.jpowsour.2006.07.060

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：

Single-phase, chemically pure vanadium pentoxide (V2O5) powders are prepared by co-precipitation and further calcination at 300 degrees C. The materials obtained are agglomerated in sub-micron particles, and BET analysis shows that the as-prepared V2O5 powders have a high specific surface-area of 41 m(2) g(-1). V2O5 shows the highest capacitance in 2 M KCl electrolyte when compared with other electrolytes such as 2 M NaCl and 2 M LiCl. It yields a maximum specific capacitance of 262 F g(-1). The higher specific surface-area may be the reason for the high capacitance compared with previously published results. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1451 / 1454

页数：4

共 15 条

[1] ON THE ELECTROCHROMISM OF EVAPORATED V2O5 FILMS [J].

FUJITA, Y ;

MIYAZAKI, K ;

TATSUYAMA, C .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS, 1985, 24 (08) :1082-1086

[2] 2 COMPONENTS OF CRYSTALLOGRAPHIC TRANSITION IN VO2 [J].

GOODENOUGH, JB .

JOURNAL OF SOLID STATE CHEMISTRY, 1971, 3 (04) :490-+

[3] SPECTRALLY SELECTIVE COATINGS FOR ENERGY EFFICIENCY AND SOLAR APPLICATIONS [J].

GRANQVIST, CG .

PHYSICA SCRIPTA, 1985, 32 (04) :401-407

[4] ELECTROCHROMIC OXIDES - A UNIFIED VIEW [J].

GRANQVIST, CG .

SOLID STATE IONICS, 1994, 70 :678-685

[5] Solid-State Lithium Microbatteries [J].

Julien, C. ;

Yebka, B. ;

Guesdon, J. P. .

IONICS, 1995, 1 (04) :316-327

[6] 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

[7] Ideal supercapacitor behavior of amorphous V2O5•nH2O in potassium chloride (KCl) aqueous solution [J].

Lee, HY ;

Goodenough, JB .

JOURNAL OF SOLID STATE CHEMISTRY, 1999, 148 (01) :81-84

[8] Porous structured vanadium oxide electrode material for electrochemical capacitors [J].

Reddy, RN ;

Reddy, RG .

JOURNAL OF POWER SOURCES, 2006, 156 (02) :700-704

[9] Sol-gel MnO2 as an electrode material for electrochemical capacitors [J].

Reddy, RN ;

Reddy, RG .

JOURNAL OF POWER SOURCES, 2003, 124 (01) :330-337

[10]

REDDY RN, 2004, P INT S PV 2003 24 E, P213

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