Please use this identifier to cite or link to this item: https://doi.org/10.1021/ie100524s
Title: Design of an oxygen reduction catalyst for direct methanol fuel cells
Authors: Xu, J.
Yang, J.
Lee, J.Y. 
Saeys, M. 
Issue Date: 3-Nov-2010
Source: Xu, J., Yang, J., Lee, J.Y., Saeys, M. (2010-11-03). Design of an oxygen reduction catalyst for direct methanol fuel cells. Industrial and Engineering Chemistry Research 49 (21) : 10251-10253. ScholarBank@NUS Repository. https://doi.org/10.1021/ie100524s
Abstract: First principle calculations were used to screen the activity of core-shell oxygen reduction reaction (ORR) electrocatalysts for use in direct methanol fuel cells (DMFCs). Density functional theory (DFT) calculations indicate that the subsurface addition of 3d transition metals improves the activity of a Pd3Pt electrocatalyst by reducing its oxygen binding energy. Optimal activity close to the maximum of the ORR volcano curve is predicted for Pd 3Fe@Pd3Pt and Pd3Mn@Pd3Pt core-shell catalysts. To validate the theoretical predictions, a series of Pd 3M@Pd3Pt/C electrocatalysts (M = Ni, Co, Fe, and Cr) was prepared by galvanic replacement. Optimal activity and high methanol tolerance were observed for Pd3Fe@Pd3Pt. Compared with commercial Pt catalysts, the Pd3M@Pd3Pt structured catalysts utilize less platinum and yet display favorable ORR activity and selectivity. © 2010 American Chemical Society.
Source Title: Industrial and Engineering Chemistry Research
URI: http://scholarbank.nus.edu.sg/handle/10635/90530
ISSN: 08885885
DOI: 10.1021/ie100524s
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