Surface intermediates on metal electrodes at high temperatures

Birgit Zachau-Christiansen; Torben Jacobsen; Lasse Bay; Steen Skaarup

doi:10.1016/S0167-2738(98)00292-6

Surface intermediates on metal electrodes at high temperatures

Birgit Zachau-Christiansen, Torben Jacobsen, Lasse Bay, Steen Skaarup

Department of Chemistry

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

Abstract

The mechanisms widely conceived for the O(2)-reduction or H(2)-oxidation reactions in SOFC's involve intermediate O/H species adsorbed on the electrode surface. The presence of these intermediates is investigated by linear sweep voltammetry. In air at moderate temperatures (500 degrees C) Pt in contact with YSZ is covered with adsorbed oxygen which vanishes at high temperature (1000 degrees C). On Ni (YSZ) a specific layer of NiO is observed above the equilibrium potential while no surface species involving hydrogen can be identified at SOFC anode conditions. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

Original language	English
Journal	Solid State Ionics
Volume	113-115
Issue number	SI
Pages (from-to)	271-277
ISSN	0167-2738
DOIs	https://doi.org/10.1016/S0167-2738(98)00292-6
Publication status	Published - 1998

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title = "Surface intermediates on metal electrodes at high temperatures",

abstract = "The mechanisms widely conceived for the O(2)-reduction or H(2)-oxidation reactions in SOFC's involve intermediate O/H species adsorbed on the electrode surface. The presence of these intermediates is investigated by linear sweep voltammetry. In air at moderate temperatures (500 degrees C) Pt in contact with YSZ is covered with adsorbed oxygen which vanishes at high temperature (1000 degrees C). On Ni (YSZ) a specific layer of NiO is observed above the equilibrium potential while no surface species involving hydrogen can be identified at SOFC anode conditions. (C) 1998 Published by Elsevier Science B.V. All rights reserved. ",

author = "Birgit Zachau-Christiansen and Torben Jacobsen and Lasse Bay and Steen Skaarup",

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doi = "10.1016/S0167-2738(98)00292-6",

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T1 - Surface intermediates on metal electrodes at high temperatures

AU - Zachau-Christiansen, Birgit

AU - Jacobsen, Torben

AU - Bay, Lasse

AU - Skaarup, Steen

PY - 1998

Y1 - 1998

N2 - The mechanisms widely conceived for the O(2)-reduction or H(2)-oxidation reactions in SOFC's involve intermediate O/H species adsorbed on the electrode surface. The presence of these intermediates is investigated by linear sweep voltammetry. In air at moderate temperatures (500 degrees C) Pt in contact with YSZ is covered with adsorbed oxygen which vanishes at high temperature (1000 degrees C). On Ni (YSZ) a specific layer of NiO is observed above the equilibrium potential while no surface species involving hydrogen can be identified at SOFC anode conditions. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

AB - The mechanisms widely conceived for the O(2)-reduction or H(2)-oxidation reactions in SOFC's involve intermediate O/H species adsorbed on the electrode surface. The presence of these intermediates is investigated by linear sweep voltammetry. In air at moderate temperatures (500 degrees C) Pt in contact with YSZ is covered with adsorbed oxygen which vanishes at high temperature (1000 degrees C). On Ni (YSZ) a specific layer of NiO is observed above the equilibrium potential while no surface species involving hydrogen can be identified at SOFC anode conditions. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

U2 - 10.1016/S0167-2738(98)00292-6

DO - 10.1016/S0167-2738(98)00292-6

M3 - Journal article

SN - 0167-2738

VL - 113-115

SP - 271

EP - 277

JO - Solid State Ionics

JF - Solid State Ionics

IS - SI

ER -

Surface intermediates on metal electrodes at high temperatures

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