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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Synthesis and Characterization of Pd@Pt and PdH@Pt Core-shell Octahedra and Their Application towards the Hydrogen Evolution Reaction

2018년 2월 7일 14시 43분 54초
INOR.P-163 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
4월 19일 (목요일) 11:00~12:30
Inorganic Chemistry
저자 및
Jeonghyeon Kim, Sang-Il Choi1,*
Kyungpook National University, Korea
1Department of Chemistry, Kyungpook National University, Korea
Rational design of highly efficient electrocatalysts for the hydrogen evolution reaction (HER) is of prime importance for establishing renewable and sustainable energy systems. Alkaline HER is particularly challenging as it involves a two-step reaction of water dissociation and hydrogen recombination, for which platinum-based binary catalysts have shown promising activity. Typical strategies, including optimization of shape or facet, formation of alloys with other metals, and incorporation of a different metal into the core, have been investigated to enhance the activity of a Pt-based catalyst and thus reduce the loading of Pt. This presentation reports the synthesis and characterization of Pd@Pt and PdH0.40@Pt core-shell octahedra as the activity electrocatalysts towards the HER. Two different core-shell octahedra were obtained by direct deposition of conformal Pt shells on Pd and PdH0.40 octahedra, respectively. The core-shell structure was confirmed by a number of techniques, including scanning transmission electron microscopy, energy-dispersive X-ray spectroscopy mapping, X-ray diffraction, X-ray absorption spectroscopy and electrochemical measurements. HER activities of Pd@Pt and PdH0.40@Pt core-shell octahedra are also presented