123rd General Meeting of the KCS

Type Poster Presentation
Area Inorganic Chemistry
Room No. Exhibition Hall 2
Time 4월 18일 (목요일) 11:00~12:30
Code INOR.P-32
Subject The doping effect of transition metal in Cu2-xS@IrRu nanoparticles for oxygen evolution reaction in acidic media
Authors Ye Ji Park, Jinwhan Joo, Haneul Jin, Kwangyeol Lee*
Department of Chemistry, Korea University, Korea
Abstract We have recently reported that the cactus-like Cu2-xS@IrRu exhibit excellent catalytic activity and stability toward the hydrogen evolution reaction and oxygen evolution reaction serving as bifunctional catalyst. It has been demonstrated in many cases that the transition metal doping to noble metal nanoparticles can greatly enhance the electrocatalytic performance of noble metal nanocatalysts. In order to develop bifunctional catalysts toward HER and OER with further enhanced catalytic activity and stability, we have attempted the transition metal doping of IrRu phase on the Cu2-xS substrate. Among the tested metal dopants, Ni and Co dramatically improve electrocatalytic activity of IrRu catalyst compared to Mn and Cr. Moreover, we found that the concentration of metal dopant on the Cu2-xS@IrRu nanoparticles also affects the catalytic performance. Herein, we report the doping-dependent OER catalytic activity of IrRu phase as well as the reason for the observed catalytic performance.
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