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Titolo:
Conducting polymer with metal oxide for electrochemical capacitor - Poly(3,4-ethylenedioxythiophene) RuOx electrode
Autore:
Hong, JI; Yeo, IH; Paik, WK;
Indirizzi:
Sogang Univ, Dept Chem, Seoul 121742, South Korea Sogang Univ Seoul South Korea 121742 ept Chem, Seoul 121742, South Korea Dongguk Univ, Dept Chem, Seoul 100715, South Korea Dongguk Univ Seoul South Korea 100715 pt Chem, Seoul 100715, South Korea
Titolo Testata:
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
fascicolo: 2, volume: 148, anno: 2001,
pagine: A156 - A163
SICI:
0013-4651(200102)148:2<A156:CPWMOF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROUS RUTHENIUM OXIDE; FILM ELECTRODES; ENERGY DENSITY; POLYPYRROLE; BEHAVIOR; SUPERCAPACITOR; STORAGE; CHARGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
35
Recensione:
Indirizzi per estratti:
Indirizzo: Hong, JI Sogang Univ, Dept Chem, Seoul 121742, South Korea Sogang Univ Seoul South Korea 121742 Seoul 121742, South Korea
Citazione:
J.I. Hong et al., "Conducting polymer with metal oxide for electrochemical capacitor - Poly(3,4-ethylenedioxythiophene) RuOx electrode", J ELCHEM SO, 148(2), 2001, pp. A156-A163

Abstract

Electrodes made by depositing ruthenium oxide on conducting poly(3,4-ethylenedioxythiophene) (PEDT) were studied for their electrochemical and impedance properties. In acidic electrolytes the PEDT-RuOx composite electrodes exhibited large capacitance due to contributions from the double-layer capacitance and the faradaic capacitance. Optimization of the thickness of the conducting polymer film and the amount of ruthenium deposition was found necessary to realize large specific capacitance. The specific capacitance based on the combined mass of PEDT-RuOx was 420 F/g, and the specific capacitance based on the mass of RuO2 was 930 F/g. The energy storage density of a capacitance cell constructed with a pair of PEDT-RuOx electrodes reached 27.5 Wh/kg when the cell was charged to 1.0 V. The impedance analysis of the composite electrode revealed that both the double-layer capacitance and the pseudocapacitance originating from both PEDT and RuOx contribute to large specific capacitance. (C) 2001 The Electrochemical Society. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 23/11/20 alle ore 21:46:33