Abstract
Developing Pt-lean catalysts for oxygen reduction reaction (ORR) is the key for large-scale application of proton exchange membrane fuel cell (PEMFC). In this paper, we have proposed a multiple-descriptor strategy for screening efficient and durable ORR alloy catalysts of low Pt content. We argue that an ideal Pt-based bimetallic alloy catalyst for ORR should possess simultaneously negative alloy formation energy, negative surface segregation energy of Pt and a lower oxygen binding ability than pure Pt. By performing detailed DFT calculations on the thermodynamics, surface chemistry and electronic properties of various Pt-M alloys (M refers to non-precious transition metals in the periodic table), Pt-V，Pt-Fe，Pt-Co，Pt-Ni，Pt-Cu，Pt-Zn，Pt-Mo，Pt-W are predicted to have improved catalytic activity and durability for ORR, most of which have indeed been reported to have excellent ORR catalytic performance in the literature. It is suggested that the ORR performance of Pt-Zn and Pt-Mo systems deserve detailed theoretical and experimental investigations.
Graphical Abstract
Keywords
density functional theory calculations, catalyst design, Pt-based bimetallic alloys
Publication Date
2013-02-28
Online Available Date
2012-07-05
Revised Date
2012-06-30
Received Date
2012-06-04
Recommended Citation
Li-hui OU, Sheng-li CHEN.
A DFT Calculation Screening of Pt-Based Bimetallic Catalysts for Oxygen Reduction[J]. Journal of Electrochemistry,
2013
,
19(1): Article 10.
DOI: 10.61558/2993-074X.2936
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol19/iss1/10
Included in
Catalysis and Reaction Engineering Commons, Computational Chemistry Commons, Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons, Power and Energy Commons
