Pt-M (M = Fe, Co, Ni and Cu) electrocatalysts synthesized by an aqueous route for proton exchange membrane fuel cells

L. Xiong, Arunachala Mada Kannan, A. Manthiram

Research output: Contribution to journalArticle

262 Citations (Scopus)

Abstract

Nanostructured Pt-M (M = Fe, Co, Ni, and Cu) alloy catalysts synthesized by a low temperature (70 °C) reduction procedure with sodium formate in aqueous medium have been investigated for oxygen reduction in sulfuric acid and as cathodes in single proton exchange membrane fuel cells (PEMFC). The Pt-M alloy catalysts show improved catalytic activity towards oxygen reduction compared to pure platinum. Among the various alloy catalysts investigated, the Pt-Co catalyst shows the best performance with the maximum catalytic activity and minimum polarization occurring at a Pt:Co atomic ratio of around 1:7. While mild heat treatments at moderate temperatures (200 °C) improve the catalytic activity due to a cleaning of the surface oxides, annealing at elevated temperatures (900 °C) degrade the activity due to an increase in particle size.

Original languageEnglish (US)
Pages (from-to)898-903
Number of pages6
JournalElectrochemistry Communications
Volume4
Issue number11
DOIs
StatePublished - Nov 1 2002
Externally publishedYes

Fingerprint

Electrocatalysts
Proton exchange membrane fuel cells (PEMFC)
Catalyst activity
Catalysts
formic acid
Oxygen
Platinum
Sulfuric acid
Temperature
Oxides
Cleaning
Cathodes
Particle size
Heat treatment
Sodium
Annealing
Polarization

Keywords

  • Galvanostatic polarization
  • Oxygen reduction
  • Platinum alloy catalysts
  • Proton exchange membrane fuel cells

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Analytical Chemistry
  • Electrochemistry

Cite this

Pt-M (M = Fe, Co, Ni and Cu) electrocatalysts synthesized by an aqueous route for proton exchange membrane fuel cells. / Xiong, L.; Mada Kannan, Arunachala; Manthiram, A.

In: Electrochemistry Communications, Vol. 4, No. 11, 01.11.2002, p. 898-903.

Research output: Contribution to journalArticle

@article{3571028016374201940ee8a9e6e76602,
title = "Pt-M (M = Fe, Co, Ni and Cu) electrocatalysts synthesized by an aqueous route for proton exchange membrane fuel cells",
abstract = "Nanostructured Pt-M (M = Fe, Co, Ni, and Cu) alloy catalysts synthesized by a low temperature (70 °C) reduction procedure with sodium formate in aqueous medium have been investigated for oxygen reduction in sulfuric acid and as cathodes in single proton exchange membrane fuel cells (PEMFC). The Pt-M alloy catalysts show improved catalytic activity towards oxygen reduction compared to pure platinum. Among the various alloy catalysts investigated, the Pt-Co catalyst shows the best performance with the maximum catalytic activity and minimum polarization occurring at a Pt:Co atomic ratio of around 1:7. While mild heat treatments at moderate temperatures (200 °C) improve the catalytic activity due to a cleaning of the surface oxides, annealing at elevated temperatures (900 °C) degrade the activity due to an increase in particle size.",
keywords = "Galvanostatic polarization, Oxygen reduction, Platinum alloy catalysts, Proton exchange membrane fuel cells",
author = "L. Xiong and {Mada Kannan}, Arunachala and A. Manthiram",
year = "2002",
month = "11",
day = "1",
doi = "10.1016/S1388-2481(02)00485-X",
language = "English (US)",
volume = "4",
pages = "898--903",
journal = "Electrochemistry Communications",
issn = "1388-2481",
publisher = "Elsevier Inc.",
number = "11",

}

TY - JOUR

T1 - Pt-M (M = Fe, Co, Ni and Cu) electrocatalysts synthesized by an aqueous route for proton exchange membrane fuel cells

AU - Xiong, L.

AU - Mada Kannan, Arunachala

AU - Manthiram, A.

PY - 2002/11/1

Y1 - 2002/11/1

N2 - Nanostructured Pt-M (M = Fe, Co, Ni, and Cu) alloy catalysts synthesized by a low temperature (70 °C) reduction procedure with sodium formate in aqueous medium have been investigated for oxygen reduction in sulfuric acid and as cathodes in single proton exchange membrane fuel cells (PEMFC). The Pt-M alloy catalysts show improved catalytic activity towards oxygen reduction compared to pure platinum. Among the various alloy catalysts investigated, the Pt-Co catalyst shows the best performance with the maximum catalytic activity and minimum polarization occurring at a Pt:Co atomic ratio of around 1:7. While mild heat treatments at moderate temperatures (200 °C) improve the catalytic activity due to a cleaning of the surface oxides, annealing at elevated temperatures (900 °C) degrade the activity due to an increase in particle size.

AB - Nanostructured Pt-M (M = Fe, Co, Ni, and Cu) alloy catalysts synthesized by a low temperature (70 °C) reduction procedure with sodium formate in aqueous medium have been investigated for oxygen reduction in sulfuric acid and as cathodes in single proton exchange membrane fuel cells (PEMFC). The Pt-M alloy catalysts show improved catalytic activity towards oxygen reduction compared to pure platinum. Among the various alloy catalysts investigated, the Pt-Co catalyst shows the best performance with the maximum catalytic activity and minimum polarization occurring at a Pt:Co atomic ratio of around 1:7. While mild heat treatments at moderate temperatures (200 °C) improve the catalytic activity due to a cleaning of the surface oxides, annealing at elevated temperatures (900 °C) degrade the activity due to an increase in particle size.

KW - Galvanostatic polarization

KW - Oxygen reduction

KW - Platinum alloy catalysts

KW - Proton exchange membrane fuel cells

UR - http://www.scopus.com/inward/record.url?scp=0036849896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036849896&partnerID=8YFLogxK

U2 - 10.1016/S1388-2481(02)00485-X

DO - 10.1016/S1388-2481(02)00485-X

M3 - Article

AN - SCOPUS:0036849896

VL - 4

SP - 898

EP - 903

JO - Electrochemistry Communications

JF - Electrochemistry Communications

SN - 1388-2481

IS - 11

ER -