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Performance of solid oxide fuel cells based on proton-conducting BaCe0.7In0.3-xYxO3-δ electrolyte

✍ Scribed by Fei Zhao; Fanglin Chen

Publisher
Elsevier Science
Year
2010
Tongue
English
Weight
800 KB
Volume
35
Category
Article
ISSN
0360-3199

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✦ Synopsis

The performances of solid oxide fuel cells with proton conductors BaCe 0.7 In 0.3Àx Y x O 3Àd (BCIY, x ¼ 0, 0.1, 0.2, 0.3) as electrolytes were investigated in this work. The cell based on BaCe 0.7 In 0.2 Y 0.1 O 3Àd electrolyte showed maximum power outputs of 0.114, 0.204 and 0.269 Wcm À2 at 600, 650 and 700 C, respectively. After operating at a constant cell voltage output of 0.5V for 40h, no obvious degradation in performance was observed for the cells based on BaCe 0.7 In 0.3 O 3Àd and BaCe 0.7 In 0.2 Y 0.1 O 3Àd electrolytes. However, although relatively lower resistances and higher initial power outputs were found for cells based on BaCe 0.7

In 0.1 Y 0.2 O 3Àd and BaCe 0.7 Y 0.3 O 3Àd electrolytes, rapid cell performance degradations were observed for these two cells. The stability under cell operating conditions remained a challenge for cells using BaCe 0.7 In 0.1 Y 0.2 O 3Àd and BaCe 0.7 Y 0.3 O 3Àd electrolytes.

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