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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Noble Metal-Based Bimodal Nanocatalysts for Hydrogen Evolution Reaction in an Alkaline Electrolyte

등록일
2017년 8월 21일 18시 01분 54초
접수번호
0724
발표코드
ELEC2-2 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 09시 : 40분
발표형식
심포지엄
발표분야
Electrochemistry - Recent Advances in Electrochemistry
저자 및
공동저자
Sang-Il Choi
Department of Chemistry, Kyungpook National University, Korea
Hydrogen evolution reaction (HER) in an alkaline media consumes massive electrical energy during water electrolysis owing to the sluggish kinetics. Therefore, development of an active electrocatalyst is remained as the great challenge. Because the Pt catalyst showing the best activity among the HER catalysts, is expensive, development of the cost-effective electrocatalyst has been intensively studied by many researchers. Recent reports designed the bimodal surface modified catalysts, such as noble metal-transition metal hydroxides composites, as the promising candidate for enhancing the alkaline HER kinetics. In this bimodal system, the oxophilic metal hydroxides catalyze the dissociation of water and the formation of hydrogen intermediates, while the nearby noble metal surface converts the hydrogen intermediate to H2 gas. In this talk, we introduce the effective electrocatalysts based on Ru nanocrystals, where Ni(OH)2 was formed on their surfaces during a synthesis. The as-prepared bimodal electrocatalysts show comparable HER activity with that of a commercial Pt/C catalyst.

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