Facile synthesis and electrochemical properties of conducting SrRuO3-RuO2 composite nanofibre mats

Title
Facile synthesis and electrochemical properties of conducting SrRuO3-RuO2 composite nanofibre mats
Authors
현태선김호기김일두
Keywords
Ruthenium oxide; Electrospinning; Electrochemical capacitor; *2009년도 기관고유 성과에 반영되었음.; *2009 개인평가에 반영 완료; Nanofibre; Perovskite; Strontium ruthenate
Issue Date
2010-03
Publisher
Journal of power sources
Citation
VOL 195, NO 5, 1522-1528
Abstract
This study reports the facile synthesis of highly conductive SrRuO3(SRO)–RuO2 composite nanofibre mats and their potential suitability for application in electrochemical capacitors as an active electrode material. SRO–RuO2/poly(vinyl acetate) composite nanofibre mats are electrospun on to a Au-coated SiO2/Si substrate and a Ti substrate, subsequently thermocompressed at 60 ◦C, and calcined at various temperatures (from 350 to 850 ℃). The calcined SRO–RuO2 nanofibre mats exhibit porous morphologies and bundle shapes composed of multiple-fibrils with a nanoparticle diameter ranging from 20 to 50 nm. Single SRO–RuO2 nanofibre and multiple SRO–RuO2 nanofibre mats show high electrical conductivity of 476 and 40.8 S cm−1, respectively. Pseudocapacitors using SRO–RuO2 nanofibre mats calcined at 350 ℃ exhibit a high specific capacitance of 192 F g−1 at a scan rate of 10mVs−1. The superior capacitance retention (83.4%) of the SRO–RuO2 nanofibre mats is maintained even at rapid scan rate of 1000mVs−1.
URI
http://pubs.kist.re.kr/handle/201004/36239
ISSN
0378-7753
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KIST Publication > Article
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