화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2012년 봄 (04/12 ~ 04/13, 대전컨벤션센터)
권호 37권 1호
발표분야 대학원생 구두발표(영어발표)
제목 Versatile Double Hydrophilic Block Copolymers : Dual Role as Synthetic Nanoreactor and Ionic and Electronic Conduction Layer for Ruthenium Oxide Nanoparticle Supercapacitors
초록 The facile synthetic approach of ruthenium oxide nanoparticles using double hydrophilic block copolymers (DHBCs) and their application toward the supercapacitor is presented. Nanostructured hydrous ruthenium oxide (RuO) nanoparticles are synthesized using DHBCs of poly(ethylene oxide)-block-poly(acrylic acid) as a template, forming a micelle upon addition of the ruthenium precursor, which then transformed into RuO2 nanoparticles. Through annealing at 400 oC, we found that the crystallinity of RuO2 nanoparticles increases considerably with a simultaneous transformation of the surrounding double hydrophilic block copolymer into ionic and electronic conducting buffer layer atop RuO2 nanoparticles, which contribute to the significant enhancement of the overall specific capacitance from 106 to 962 F/g at 10 mV/s. The RuO2 nanoparticles annealed at 400 oC also exhibit a superior retention of capacitance over 1000 cycles at very high charge/discharge rate at 20 A/g.
저자 서은용, 이태민, 이규태, 송현곤, 김병수
소속 울산과학기술대
키워드 Double Hydrophilic Block Copolymers (DHBCs); Ruthenium Oxide; Nanoparticles; Supercapacitor
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