Effect of poly(3,4-ethylenedioxythiophene) (PEDOT) on the pseudocapacitive properties of manganese oxide (MnO2) in the PEDOT/MnO2/multiwall carbon nanotube (MWNT) composite

被引：49

作者：

Yoon, Seung-Beom ^{[1
]}

Kim, Kwang-Bum ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

来源：

ELECTROCHIMICA ACTA | 2013年 / 106卷

关键词：

Electrochemical capacitors; Poly(3,4-ethylenedioxythiophene); Manganese oxide; Multiwall carbon nanotubes; Pseudocapacitance; ELECTROCHEMICAL PROPERTIES; PERFORMANCE; ELECTRODE; SURFACE; CAPACITANCE; BEHAVIOR; INNER;

D O I：

10.1016/j.electacta.2013.05.058

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The effect of the presence of poly(3,4-ethylenedioxythiophene) (PEDOT) on the pseudocapacitive properties of manganese oxide (MnO2) is investigated using PEDOT/MnO2/multiwall carbon nanotube-based (MWNT) coaxial composites containing different PEDOT contents. To prepare these PEDOT/MnO2/MWNT coaxial composites, a nanometer-thick outer layer of PEDOT was electrochemically polymerized onto the MnO2/MWNT composite, without affecting the morphology of MnO2. The pseudocapacitive properties of the MnO2/MWNT and PEDOT/MnO2/MWNT composites were evaluated by cyclic voltammetry. By analysis of the voltammetric charge, the outermost PEDOT layer on the MnO2/MWNT composite was found to improve the rate capability mainly through acting as an electrically conductive layer, rather the specific capacitance of the MnO2/MWNT composite. (c) 2013 Elsevier Ltd. All rights reserved.

引用

页码：135 / 142

页数：8

共 43 条

[1]

[Anonymous], 1999, ELECTROCHEMICAL SUPE

[2] INNER AND OUTER ACTIVE SURFACE OF RUO2 ELECTRODES [J].

ARDIZZONE, S ;

FREGONARA, G ;

TRASATTI, S .

ELECTROCHIMICA ACTA, 1990, 35 (01) :263-267

[3] Variation of the MnO2 birnessite structure upon charge/discharge in an electrochemical supercapacitor electrode in aqueous Na2SO4 electrolyte [J].

Athouel, Laurence ;

Moser, Francois ;

Dugas, Romain ;

Crosnier, Olivier ;

Belanger, Daniel ;

Brousse, Thierry .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (18) :7270-7277

[4] Improved capacitive behavior of electrochemically synthesized Mn oxide/PEDOT electrodes utilized as electrochemical capacitors [J].

Babakhani, Banafsheh ;

Ivey, Douglas G. .

ELECTROCHIMICA ACTA, 2010, 55 (12) :4014-4024

[5] NOTE ON A METHOD TO INTERRELATE INNER AND OUTER ELECTRODE AREAS - REPLY [J].

BARONETTO, D ;

KRSTAJIC, N ;

TRASATTI, S .

ELECTROCHIMICA ACTA, 1994, 39 (16) :2359-2362

[6] Direct Redox Deposition of Manganese Oxide on Multiscaled Carbon Nanotube/Microfiber Carbon Electrode for Electrochemical Capacitor [J].

Bordjiba, Tarik ;

Belanger, Daniel .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2009, 156 (05) :A378-A384

[7] Crystalline MnO2 as possible alternatives to amorphous compounds in electrochemical supercapacitors [J].

Brousse, Thierry ;

Toupin, Mathieu ;

Dugas, Romain ;

Athouel, Laurence ;

Crosnier, Olivier ;

Belanger, Daniel .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2006, 153 (12) :A2171-A2180

[8] Spectroscopic and conductivity studies of doping in chemically synthesized poly(3,4-ethylenedioxythiophene) [J].

Chiu, WW ;

Travas-Sejdic, J ;

Cooney, RP ;

Bowmaker, GA .

SYNTHETIC METALS, 2005, 155 (01) :80-88

[9] ELECTROCHEMICAL SURFACE CHARACTERIZATION OF IRO2+SNO2 MIXED-OXIDE ELECTROCATALYSTS [J].

DEPAULI, CP ;

TRASATTI, S .

JOURNAL OF ELECTROANALYTICAL CHEMISTRY, 1995, 396 (1-2) :161-168

[10] Effect of crystallographic structure of MnO2 on its electrochemical capacitance properties [J].

Devaraj, S. ;

Munichandraiah, N. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2008, 112 (11) :4406-4417

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