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제119회 대한화학회 학술발표회, 총회 및 기기전시회 안내 An Efficient Role of RuO2 Nanosheet as an Additive for Exploring High Performance Electrocatalysts

등록일
2017년 2월 16일 14시 54분 37초
접수번호
4415
발표코드
MAT.P-478 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
4월 21일 (금요일) 13:00~14:30
발표형식
포스터
발표분야
재료화학
저자 및
공동저자
권남희, 황성주*
이화여자대학교 화학·나노과학과, Korea
High performance electrocatalysts for oxygen evolution reaction (OER) can be synthesized by the hybridization between exfoliated layered double hydroxide (LDH) and highly conductive RuO2 nanosheets. Mesoporous LDH―RuO2 nanocomposites are synthesized by the electrostatically-driven self-assembling between negatively-charged RuO2 nanosheet and positively-charged LDH nanosheet. The coupling with metallic RuO2 nanosheet provides a quite effective way to improve oxygen evolution ability of LDH with a considerable drop of overpotential even similar with Ir/C. Compared with the mechanically mixing of LDH and RuO2, LDH―RuO2 composite shows much higher performance. Such a huge potential drop is originated from the increased electrochemically active surface area and active charge transfer. This efficient additive can be applied not only to a specific LDH but also to other LDH. The present results underscore that exfoliated RuO2 nanosheet can be used as an effective additive for improving the electrocatalytic activity of LDH materials.

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