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Electrochemical performance of PrBaCo2O5+δ layered perovskite as an intermediate-temperature solid oxide fuel cell cathode

✍ Scribed by Chengjun Zhu; Xiaomei Liu; Cuishan Yi; Duanting Yan; Wenhui Su

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
629 KB
Volume
185
Category
Article
ISSN
0378-7753

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✦ Synopsis

PrBaCo 2 O 5+ı (PBCO) powder was prepared by a combined EDTA and citrate complexing method. The electrochemical performance of PBCO as a cathode for intermediate-temperature solid oxide fuel cells (IT-SOFCs) was evaluated. A porous layer of PBCO was deposited on a 42 m thick electrolyte consisting of Ce 0.8 Sm 0.2 O 1.9 (SDC), prepared by a dry-pressing process. A fuel cell with a structure PBCO/SDC/Ni-SDC provides a maximum power density of 866, 583, 313 and 115 mW cm -2 at 650, 600, 550 and 500 • C, respectively, using hydrogen as the fuel and stationary air as the oxidant. The total resistance of the cell was about 0.41, 0.51, 0.57 and 0.77 cm 2 , respectively. This encouraging data identifies PBCO as a potential cathode material for IT-SOFCs.

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