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Review-Double-Perovskite Electrode Design Strategies and Research Progress for SOFCs

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ELECTROCHEMICAL SOC INC
DOI: 10.1149/1945-7111/ac725e

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  1. National Natural Science Foundation of China [5202780089, 51972146]

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This article reviews the latest progress of double perovskite electrode materials for solid oxide fuel cells, discussing their advantages, disadvantages, and electrochemical performances as oxygen, fuel, and symmetrical electrodes. Special emphasis is given to the basic principles, affecting factors, and solutions to overcome the drawbacks of these materials.
Since the double perovskite oxides Sr2Mg1-x Mn x MoO6-delta were reported as anode materials for solid oxide fuel cells (SOFCs) by Professor Goodenough in 2006, they have attracted increasing interest in the past decades. The double-perovskite type oxide materials have been widely used as oxygen, fuel and symmetrical electrodes for electrochemical catalytic reaction. This article reviews the latest progress of double perovskite electrode materials in crystal structure, ion-electron conducting model, catalytic activity, degradation mechanism and optimizing strategies. Special attentions are paid to the double perovskite oxides used as oxygen, fuel and symmetrical electrodes. Their advantages, disadvantages and electrochemical performances as SOFC electrodes have been discussed through extensive analysis of the literatures. Particular emphasis has been directed towards basic principles and various affecting factors regarding the performance and stability for the double perovskite oxides and their composites. The solutions to overcome the drawbacks of double perovskite electrodes, including element substitution, defect engineering and so on, have also been demonstrated.

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