Tuning electrocatalytic activity of Pt monolayer shell by bimetallic Ir-M (M=Fe, Co, Ni or Cu) cores for the oxygen reduction reaction

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• 作者：Kurian A. Kuttiyiel^aAuthor Vitae ; YongMan Choi^bAuthor Vitae ; Kotaro Sasaki^aAuthor Vitae ; Dong Su^dAuthor Vitae ; Sun-Mi Hwang^cAuthor Vitae ; Sung-Dae Yim^cAuthor Vitae ; Tae-Hyun Yang^cAuthor Vitae ; Gu-Gon Park^c ; ^{adzic@bnl.gov}Author Vitae ; Radoslav R. Adzic^a ; ^{gugon@kier.re.kr}Author Vitae
• 关键词：Fuel Cells ; Electrocatalysis ; Density function theory ; Core-shell catalyst ; Pt monolayer ; Oxygen reduction reaction
• 刊名：Nano Energy
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：29
• 期：Complete
• 页码：261-267
• 全文大小：1861 K
• 卷排序：29

文摘

Core-shell structured IrM nanoparticles are better substrates than alloyed counterparts for Pt monolayer electrocatalyst. Geometric, electronic, and segregation effects together are crucial to understand the increase in ORR activity. DFT calculations demonstrate a volcano type behavior with PtMLIrNi/C at the top of the curve.