The effect of ammonia upon the electrocatalysis of hydrogen oxidation and oxygen reduction on polycrystalline platinum

Arnau Verdaguer Casadevall; Patricia Hernandez-Fernandez; Ifan E.L. Stephens; Ib Chorkendorff; Søren Dahl

doi:10.1016/j.jpowsour.2012.07.141

The effect of ammonia upon the electrocatalysis of hydrogen oxidation and oxygen reduction on polycrystalline platinum

Arnau Verdaguer Casadevall, Patricia Hernandez-Fernandez, Ifan E.L. Stephens, Ib Chorkendorff, Søren Dahl

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

The influence of ammonium ions on the catalysis of hydrogen oxidation and oxygen reduction is studied by means of rotating ring-disk electrode experiments on polycrystalline platinum in perchloric acid. While ammonium does not affect the hydrogen oxidation reaction, the oxygen reduction reaction is severely poisoned. Poisoning at the cathode explains the majority of the losses observed in polymer electrolyte membrane fuel cells contaminated with ammonia. Voltammetry in deaerated solution suggest that the poisoning can be attributed to either ammonium oxidation or increased binding to OH species.

Original language	English
Journal	Journal of Power Sources
Volume	220
Pages (from-to)	205-210
ISSN	0378-7753
DOIs	https://doi.org/10.1016/j.jpowsour.2012.07.141
Publication status	Published - 2012

Keywords

Fuel cells
Ammonia poisoning
Oxygen reduction reaction
Voltammetry
Rotating ring-disk electrode
Electrochemistry

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10.1016/j.jpowsour.2012.07.141

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title = "The effect of ammonia upon the electrocatalysis of hydrogen oxidation and oxygen reduction on polycrystalline platinum",

abstract = "The influence of ammonium ions on the catalysis of hydrogen oxidation and oxygen reduction is studied by means of rotating ring-disk electrode experiments on polycrystalline platinum in perchloric acid. While ammonium does not affect the hydrogen oxidation reaction, the oxygen reduction reaction is severely poisoned. Poisoning at the cathode explains the majority of the losses observed in polymer electrolyte membrane fuel cells contaminated with ammonia. Voltammetry in deaerated solution suggest that the poisoning can be attributed to either ammonium oxidation or increased binding to OH species.",

keywords = "Fuel cells, Ammonia poisoning, Oxygen reduction reaction, Voltammetry, Rotating ring-disk electrode, Electrochemistry",

author = "{Verdaguer Casadevall}, Arnau and Patricia Hernandez-Fernandez and Stephens, {Ifan E.L.} and Ib Chorkendorff and S{\o}ren Dahl",

year = "2012",

doi = "10.1016/j.jpowsour.2012.07.141",

language = "English",

volume = "220",

pages = "205--210",

journal = "Journal of Power Sources",

issn = "0378-7753",

publisher = "Elsevier",

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TY - JOUR

T1 - The effect of ammonia upon the electrocatalysis of hydrogen oxidation and oxygen reduction on polycrystalline platinum

AU - Verdaguer Casadevall, Arnau

AU - Hernandez-Fernandez, Patricia

AU - Stephens, Ifan E.L.

AU - Chorkendorff, Ib

AU - Dahl, Søren

PY - 2012

Y1 - 2012

N2 - The influence of ammonium ions on the catalysis of hydrogen oxidation and oxygen reduction is studied by means of rotating ring-disk electrode experiments on polycrystalline platinum in perchloric acid. While ammonium does not affect the hydrogen oxidation reaction, the oxygen reduction reaction is severely poisoned. Poisoning at the cathode explains the majority of the losses observed in polymer electrolyte membrane fuel cells contaminated with ammonia. Voltammetry in deaerated solution suggest that the poisoning can be attributed to either ammonium oxidation or increased binding to OH species.

AB - The influence of ammonium ions on the catalysis of hydrogen oxidation and oxygen reduction is studied by means of rotating ring-disk electrode experiments on polycrystalline platinum in perchloric acid. While ammonium does not affect the hydrogen oxidation reaction, the oxygen reduction reaction is severely poisoned. Poisoning at the cathode explains the majority of the losses observed in polymer electrolyte membrane fuel cells contaminated with ammonia. Voltammetry in deaerated solution suggest that the poisoning can be attributed to either ammonium oxidation or increased binding to OH species.

KW - Fuel cells

KW - Ammonia poisoning

KW - Oxygen reduction reaction

KW - Voltammetry

KW - Rotating ring-disk electrode

KW - Electrochemistry

U2 - 10.1016/j.jpowsour.2012.07.141

DO - 10.1016/j.jpowsour.2012.07.141

M3 - Journal article

SN - 0378-7753

VL - 220

SP - 205

EP - 210

JO - Journal of Power Sources

JF - Journal of Power Sources

ER -

The effect of ammonia upon the electrocatalysis of hydrogen oxidation and oxygen reduction on polycrystalline platinum

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