The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes

Publication: Research - peer-reviewJournal article – Annual report year: 2011

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@article{f636bde1cca0440d9fb5453ff8f98392,
title = "The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes",
keywords = "Impregnation, Electrode, Impedance, Oxygen, Platinum",
publisher = "Springer",
author = "Anders Lund and Hansen, {Karin Vels} and Torben Jacobsen and Mogensen, {Mogens Bjerg}",
year = "2012",
doi = "10.1007/s10008-011-1489-2",
volume = "16",
number = "3",
pages = "1161--1168",
journal = "Journal of Solid State Electrochemistry",
issn = "1432-8488",

}

RIS

TY - JOUR

T1 - The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes

A1 - Lund,Anders

A1 - Hansen,Karin Vels

A1 - Jacobsen,Torben

A1 - Mogensen,Mogens Bjerg

AU - Lund,Anders

AU - Hansen,Karin Vels

AU - Jacobsen,Torben

AU - Mogensen,Mogens Bjerg

PB - Springer

PY - 2012

Y1 - 2012

N2 - Porous platinum electrodes impregnated with Gd x Ce1−x O2−δ (CGO) are investigated to characterise how nano-sized CGO grains affect the oxygen reaction. Impedance measurements were performed at temperatures between 450 and 750 °C and at oxygen partial pressures of 0.2 and 5 × 10−5 bar for electrodes with various CGO loadings and electrodes annealed at various temperatures. The morphology was characterised by scanning electron microscopy and the CGO grain size was determined from X-ray diffraction peak broadening. The results showed that the polarisation resistance decreased with increasing CGO loading and increasing annealing temperature. CGO facilitates transport of oxygen ions thereby increasing the effective triple-phase boundary.

AB - Porous platinum electrodes impregnated with Gd x Ce1−x O2−δ (CGO) are investigated to characterise how nano-sized CGO grains affect the oxygen reaction. Impedance measurements were performed at temperatures between 450 and 750 °C and at oxygen partial pressures of 0.2 and 5 × 10−5 bar for electrodes with various CGO loadings and electrodes annealed at various temperatures. The morphology was characterised by scanning electron microscopy and the CGO grain size was determined from X-ray diffraction peak broadening. The results showed that the polarisation resistance decreased with increasing CGO loading and increasing annealing temperature. CGO facilitates transport of oxygen ions thereby increasing the effective triple-phase boundary.

KW - Impregnation

KW - Electrode

KW - Impedance

KW - Oxygen

KW - Platinum

U2 - 10.1007/s10008-011-1489-2

DO - 10.1007/s10008-011-1489-2

JO - Journal of Solid State Electrochemistry

JF - Journal of Solid State Electrochemistry

SN - 1432-8488

IS - 3

VL - 16

SP - 1161

EP - 1168

ER -