Pd-YSZ composite cathodes for oxygen reduction reaction of intermediate-temperature solid oxide fuel cells

Liang, Fengli, Zhou, Wei, Chi, Bo, Pu, Jian, Jiang, San Ping and Jian, Li (2011) Pd-YSZ composite cathodes for oxygen reduction reaction of intermediate-temperature solid oxide fuel cells. International Journal of Hydrogen Energy, 36 13: 7670-7676. doi:10.1016/j.ijhydene.2011.03.132


Author Liang, Fengli
Zhou, Wei
Chi, Bo
Pu, Jian
Jiang, San Ping
Jian, Li
Title Pd-YSZ composite cathodes for oxygen reduction reaction of intermediate-temperature solid oxide fuel cells
Journal name International Journal of Hydrogen Energy   Check publisher's open access policy
ISSN 0360-3199
1879-3487
Publication date 2011-07
Sub-type Article (original research)
DOI 10.1016/j.ijhydene.2011.03.132
Volume 36
Issue 13
Start page 7670
End page 7676
Total pages 7
Place of publication London, United Kingdom
Publisher Elsevier
Language eng
Formatted abstract
Pd-Y2O3 stabilized ZrO2 (YSZ) composite cathodes are prepared by conventional mechanical mixing and infiltration methods. In the case of infiltration, thermal decomposition and chemical reduction processes are used to form Pd particles on the YSZ scaffold. The phase structure, morphology and electrochemical performance of the Pd-YSZ composite cathodes are characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM) and electrochemical impedance spectroscopy (EIS). The performance of mechanically mixed Pd-YSZ composite cathodes is inadequate due to significant growth and sporadical distribution of Pd particles. The 5 wt.% Pd-loaded cathode prepared by infiltration-thermal decomposition process shows the lowest polarization resistance, i.e. between 0.042 Ω cm2 and 1.5 Ω cm2 in the temperature range of 850e600 °C, benefited from the formation of nano-sized Pd particles and the presence of well connected Pd network. The effect of Pd loading on the performance of the infiltratedthermal decomposed Pd-YSZ composite cathodes is also evaluated, 5 wt.% Pd loading results in the lowest polarization resistances.
Keyword Solid oxide fuel cell
Cathode
Infiltration
Palladium
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
 
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Created: Thu, 14 Nov 2013, 10:01:55 EST by Dr Wei Zhou on behalf of School of Chemical Engineering