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Shanshan Jiang, Dr. Wei Zhou, Yingjie Niu, Prof. Zhonghua Zhu and Prof. Zongping Shao Phase Transition of a Cobalt-Free Perovskite as a High-Performance Cathode for Intermediate-Temperature Solid Oxide Fuel Cells ChemSusChem 5

Article first published online: 27 AUG 2012 | DOI: 10.1002/cssc.201200264

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Cobalt's denied success: A cobalt-free perovskite (SrNb0.1Fe0.9O3−δ, SNF) shows a phase transition, which is accompanied by a moderate change in the volume, allowing a good cathode/electrolyte interface on thermal cycling. According to the electrochemical impedance spectroscopy evaluation, the I4/m phase of the SNF exhibits positive effects on the cathode's performance, showing the highest oxygen-reduction-reaction activity in cobalt-free cathodes so far.

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