Ideal asymmetric supercapacitors consisting of polyaniline nanofibers and graphene nanosheets with proper complementary potential windows

被引：83

作者：

Hung, Pei-Jan ^{[1
]}

Chang, Kuo-Hsin ^{[1
,2
]}

Lee, Ying-Feng ^{[1
]}

Hu, Chi-Chang ^{[1
]}

Lin, Kuo-Min ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 30013, Taiwan

[2] Natl Chung Cheng Univ, Dept Chem Engn, Chiayi 621, Taiwan

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 20期

关键词：

Polyaniline nanofibers; Diameter; Graphene; Supercapacitor; Asymmetric; POROUS CARBON ELECTRODE; ELECTROCHEMICAL CAPACITORS; STAINLESS-STEEL; PERFORMANCE; POLYMERS; FILMS;

D O I：

10.1016/j.electacta.2010.05.058

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Polyaniline (PANI) nanofibers are synthesized via a chemical method of rapid mixing for the application of asymmetric supercapacitors. The diameter and aspect ratio of PANI nanofibers is found to be controllable by varying the aniline/oxidant concentration ratio. The ideal capacitive responses of PANI nanofibers between 0.2 and 0.7V (vs. Ag/AgCl) in concentrated acidic media are demonstrated by cyclic voltammetric (CV) and electrochemical impedance spectroscopic (EIS) analyses coupled with a schematic equivalent-circuit model. The morphologies and textures of nanofibers are examined by scanning electron microscopic (SEM), transmission electron microscopic (TEM) and Fourier transform infrared-attenuated total reflectance (FTIR-ATR) spectroscopic analyses. An aqueous asymmetric supercapacitor, consisting of a PANI nanofiber cathode and a graphene anode, with proper complementary potential windows is demonstrated in this work, which shows the device energy and power densities of 4.86 Wh kg(-1) and 8.75 kW kg(-1), respectively. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：6015 / 6021

页数：7

共 37 条

[11] Electrochemical characterization of polyaniline in nonaqueous electrolyte and its evaluation as electrode material for electrochemical supercapacitors [J].

Fusalba, F ;

Gouérec, P ;

Villers, D ;

Bélanger, D .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (01) :A1-A6

[12] POLYANILINE - A HISTORICAL SURVEY [J].

GENIES, EM ;

BOYLE, A ;

LAPKOWSKI, M ;

TSINTAVIS, C .

SYNTHETIC METALS, 1990, 36 (02) :139-182

[13] The capacitive characteristics of supercapacitors consisting of activated carbon fabric-polyaniline composites in NaNO3 [J].

Hu, CC ;

Li, WY ;

Lin, JY .

JOURNAL OF POWER SOURCES, 2004, 137 (01) :152-157

[14] Electrochemical impedance characterization of polyaniline-coated graphite electrodes for electrochemical capacitors - effects of film coverage/thickness and anions [J].

Hu, CC ;

Chu, CH .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 2001, 503 (1-2) :105-116

[15] Nanofiber formation in the chemical polymerization of aniline: A mechanistic study [J].

Huang, JX ;

Kaner, RB .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2004, 43 (43) :5817-5821

[16] Polyaniline nanofibers: Facile synthesis and chemical sensors [J].

Huang, JX ;

Virji, S ;

Weiller, BH ;

Kaner, RB .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (02) :314-315

[17] Electron and proton conducting polymers: recent developments and prospects [J].

Inzelt, G ;

Pineri, M ;

Schultze, JW ;

Vorotyntsev, MA .

ELECTROCHIMICA ACTA, 2000, 45 (15-16) :2403-2421

[18] Optimisation of an asymmetric manganese oxide/activated carbon capacitor working at 2 V in aqueous medium [J].

Khomenko, V ;

Raymundo-Piñero, E ;

Béguin, F .

JOURNAL OF POWER SOURCES, 2006, 153 (01) :183-190

[19] Metallic transport in polyaniline [J].

Lee, K ;

Cho, S ;

Park, SH ;

Heeger, AJ ;

Lee, CW ;

Lee, SH .

NATURE, 2006, 441 (7089) :65-68

[20]

MacDiarmid AG, 2001, ANGEW CHEM INT EDIT, V40, P2581, DOI 10.1002/1521-3773(20010716)40:14<2581::AID-ANIE2581>3.0.CO

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