Role of surface iron in enhanced activity for the oxygen reduction reaction on a Pd3Fe(111) single-crystal alloy

Xiaofang Yang; Jun Hu; Jie Fu; Ruqian Wu; Bruce E. Koel

doi:10.1002/anie.201101251

Role of surface iron in enhanced activity for the oxygen reduction reaction on a Pd₃Fe(111) single-crystal alloy

Xiaofang Yang, Jun Hu, Jie Fu, Ruqian Wu, Bruce E. Koel

Research output: Contribution to journal › Article › peer-review

34 Scopus citations

Abstract

Working together: Pd_0.9Fe_0.1-Pd₃Fe(111) (see picture, Pd adatoms yellow, Fe purple, Pd blue-green, O red, H white) displays enhanced performance for the oxygen reduction reaction with five to eight times higher activity than Pd(111). The high catalytic activity may originate from a cooperative effect of a segregated Pd layer with its large tendency to remove surface O species by protonation and active Fe with its ability to dissociate O₂.

Original language	English (US)
Pages (from-to)	10182-10185
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	50
Issue number	43
DOIs	https://doi.org/10.1002/anie.201101251
State	Published - Oct 17 2011

All Science Journal Classification (ASJC) codes

General Chemistry
Catalysis

Keywords

alloys
density functional calculations
electrocatalysis
oxygen reduction reaction
surface chemistry

Access to Document

10.1002/anie.201101251

Cite this

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title = "Role of surface iron in enhanced activity for the oxygen reduction reaction on a Pd3Fe(111) single-crystal alloy",

abstract = "Working together: Pd0.9Fe0.1-Pd3Fe(111) (see picture, Pd adatoms yellow, Fe purple, Pd blue-green, O red, H white) displays enhanced performance for the oxygen reduction reaction with five to eight times higher activity than Pd(111). The high catalytic activity may originate from a cooperative effect of a segregated Pd layer with its large tendency to remove surface O species by protonation and active Fe with its ability to dissociate O2.",

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AU - Yang, Xiaofang

AU - Hu, Jun

AU - Fu, Jie

AU - Wu, Ruqian

AU - Koel, Bruce E.

PY - 2011/10/17

Y1 - 2011/10/17

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AB - Working together: Pd0.9Fe0.1-Pd3Fe(111) (see picture, Pd adatoms yellow, Fe purple, Pd blue-green, O red, H white) displays enhanced performance for the oxygen reduction reaction with five to eight times higher activity than Pd(111). The high catalytic activity may originate from a cooperative effect of a segregated Pd layer with its large tendency to remove surface O species by protonation and active Fe with its ability to dissociate O2.

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KW - density functional calculations

KW - electrocatalysis

KW - oxygen reduction reaction

KW - surface chemistry

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