Pulse polymerized polypyrrole electrodes for high energy density electrochemical supercapacitor

被引：205

作者：

Sharma, R. K. ^{[1
]}

Rastogi, A. C. ^{[1
]}

Desu, S. B. ^{[1
]}

机构：

[1] Univ Massachusetts, Dept Elect & Comp Engn, Amherst, MA 01003 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 02期

关键词：

pulse polymerization; electrochemical electrode; polypyrrole; supercapacitor; energy density;

D O I：

10.1016/j.elecom.2007.12.004

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel method of pulsed polymerization for pyrrole exhibiting highest capacitance and very high energy density polypyrrole supercapacitor is reported. Stable polypyrrole films with good electrochemical reversibility and high doping degree were obtained by applying ultra short on time current pulse for polymerization. Pulse on time plays an important role in controlling chain size and chain defects whereas pulse off time contributes in polymer conjugation and orientation. A regime of pulse on time is identified to yield highly capacitive and stable films for supercapacitor application. Very high specific capacitance of 400 F/g and an unexpectedly high energy density of 250 Wh/kg were obtained form pulsed polymerized ordered polypyrrole structures in acidic electrolyte. Stability tests performed on pulsed polymerized pPy electrode yield long cycling life up to 10,000 cycles at charge/discharge current density of 5 mA/cm(2). (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：268 / 272

页数：5

共 30 条

[11] 'Activated' polypyrrole electrodes for high-power supercapacitor applications [J].

Ingram, MD ;

Staesche, H ;

Ryder, KS .

SOLID STATE IONICS, 2004, 169 (1-4) :51-57

[12] Physical characterization of electrochemically and chemically synthesized polypyrroles [J].

Joo, J ;

Lee, JK ;

Lee, SY ;

Jsng, KS ;

Oh, EJ ;

Epstein, AJ .

MACROMOLECULES, 2000, 33 (14) :5131-5136

[13] HIGHLY ANISOTROPIC ELECTRICALLY CONDUCTING FILMS BASED ON POLYPYRROLE [J].

KIANI, MS ;

BHAT, NV ;

DAVIS, FJ ;

MITCHELL, GR .

POLYMER, 1992, 33 (19) :4113-4120

[14] Electrochemical machining of stainless steel microelements with ultrashort voltage pulses [J].

Kirchner, V ;

Cagnon, L ;

Schuster, R ;

Ertl, G .

APPLIED PHYSICS LETTERS, 2001, 79 (11) :1721-1723

[15] Electrochemical micromachining with ultrashort voltage pulses-a versatile method with lithographical precision [J].

Kock, M ;

Kirchner, V ;

Schuster, R .

ELECTROCHIMICA ACTA, 2003, 48 (20-22) :3213-3219

[16] Effect of electrolytes on performance of electrochemical capacitors based on poly[3-(3,4-difluorophenyl)thiophene] [J].

Li, L ;

Loveday, DC ;

Mudigonda, DSK ;

Ferraris, JP .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2002, 149 (09) :A1201-A1207

[17] Conducting polymers as electrode materials in supercapacitors [J].

Mastragostino, M ;

Arbizzani, C ;

Soavi, F .

SOLID STATE IONICS, 2002, 148 (3-4) :493-498

[18] Ellipsometric, electrogravimetric, and spectroelectrochemical studies of the redox process of sulfonated polyaniline [J].

Mello, RMQ ;

Torresi, RM ;

de Torresi, SIC ;

Ticianelli, EA .

LANGMUIR, 2000, 16 (20) :7835-7841

[19] ELECTROCHEMISTRY OF SURFACTANT-DOPED POLYPYRROLE FILM(I) - FORMATION OF COLUMNAR STRUCTURE BY ELECTROPOLYMERIZATION [J].

NAOI, K ;

OURA, Y ;

MAEDA, M ;

NAKAMURA, S .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1995, 142 (02) :417-422

[20] Comparative study of conducting polymers by the ESCR model [J].

Otero, TF ;

Boyano, I .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (28) :6730-6738

← 1 2 3 →