Hyun, Tae-Seon Tuller, Harry L. Youn, Doo-Young Kim, Ho-Gi Kim, Il-Doo 2024-01-20T18:32:49Z 2024-01-20T18:32:49Z 2021-09-04 2010-10 0959-9428 https://pubs.kist.re.kr/handle/201004/131085 The facile synthesis, by electrospinning of highly conductive RuO2 fiber mats as the conducting core of electrochemical capacitors, is reported. Electrospun RuO2 fiber mats, calcined at 400 degrees C, exhibited highly porous morphologies composed of crystalline RuO2 nano-particles with an average particle size of 10 nm. The highly conducting (sigma = 288 S cm(-1)) fiber mats were used as the basis of a hybrid electrochemical capacitor in which the fiber mats served as the conducting core for electrochemically deposited hydrate RuO2 center dot nH(2)O overlayers. These electrochemical capacitors exhibited superior characteristics: a high specific capacitance of similar to 886.9 F g(-1) (based on the mass of the hydrous RuO2 coating layer) at scan rate of 10 mV s(-1) and high rate capability with a capacity loss of only 30% from 10 to 2000 mV s(-1). This is attributed to the superior electron transport pathways provided by the fiber mat core to the upper ionically conducting hydrous RuO2 coating layer. English ROYAL SOC CHEMISTRY RUTHENIUM OXIDE NANOSTRUCTURED MATERIALS ELECTRODE MATERIAL SUPERCAPACITOR CAPACITANCE SUBSTRATE STORAGE Facile synthesis and electrochemical properties of RuO2 nanofibers with ionically conducting hydrous layer Article 10.1039/c0jm00494d 1 JOURNAL OF MATERIALS CHEMISTRY, v.20, no.41, pp.9172 - 9179 JOURNAL OF MATERIALS CHEMISTRY 20 41 9172 9179 scie scopus 000282871600028 2-s2.0-77957894702 Chemistry, Physical Materials Science, Multidisciplinary Chemistry Materials Science Article RUTHENIUM OXIDE NANOSTRUCTURED MATERIALS ELECTRODE MATERIAL SUPERCAPACITOR CAPACITANCE SUBSTRATE STORAGE *2010기관고유사업 평가에 반영 완료