The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes
Publication: Research - peer-review › Journal article – Annual report year: 2011
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The effect of loading and particle size on the oxygen reaction in CGO impregnated Pt electrodes. / Lund, Anders; Hansen, Karin Vels; Jacobsen, Torben; Mogensen, Mogens Bjerg.
In: Journal of Solid State Electrochemistry, Vol. 16, No. 3, 2012, p. 1161-1168.Publication: Research - peer-review › Journal article – Annual report year: 2011
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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 -