Effects of Pr-deficiency on thermal expansion and electrochemical properties in Pr1−xBaCo2O5+δ cathodes for IT-SOFCs
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- 作者：Leilei Zhanga ; leizhang1983@163.com" class="auth_mail" title="E-mail the corresponding author ; Guibin Yaoa ; Zhaoyuan Songa ; Bingbing Niua ; b ; Wen Longa ; Lei Zhanga ; Yu shenc ; Tianmin Heb
- 关键词：Solid oxide fuel cell ; Layered perovskite cathode ; Thermal expansion ; Oxygen reduction ; Electrochemical performance
- 刊名：Electrochimica Acta
- 出版年：2016
- 出版时间：10 September 2016
- 年：2016
- 卷：212
- 期：Complete
- 页码：522-534
- 全文大小：3725 K
文摘
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Single phase oxides P1−xBCO with x = 0.00–0.10 were successfully prepared.
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TECs and electrical conductivities of P1−xBCO cathodes decrease with Pr-deficiency.
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Among P1−xBCO cathodes, P0.92BCO exhibits the lowest polarization resistance.
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Electron charge transfer plays a dominant role in cathode oxygen reduction.
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Pmax of 987 mW cm−2 at 800 °C for P0.92BCO cathode is obtained on SDC electrolyte.