Preparation of honeycomb perovskite-type La1−xSmxMn0.8Co0.2O3 and its electrochemical performance

•Porous structure.•Simple method for the preparation of large specific surface area chalcogenides.•Bifunctional catalytic. A series of perovskite oxides La1-xSmxMn0.8Co0.2O3 (x = 0.2, 0.4, 0.6, 0.8) were prepared using the carbon microsphere template method, and the prepared samples have a loose por...

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Bibliographic Details
Published in:Materials science & engineering. B, Solid-state materials for advanced technology Solid-state materials for advanced technology, 2024-03, Vol.301, Article 117145
Main Authors: Hou, Yuwei, Zhang, Zhaoyang, Zhang, Yue, Liu, Chunxia, Shen, Qingfeng, Yu, XiaoHua
Format: Article
Language:English
Subjects:
Bifunctional catalysts
Electrochemical performance
Perovskite
Template method
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Summary:•Porous structure.•Simple method for the preparation of large specific surface area chalcogenides.•Bifunctional catalytic. A series of perovskite oxides La1-xSmxMn0.8Co0.2O3 (x = 0.2, 0.4, 0.6, 0.8) were prepared using the carbon microsphere template method, and the prepared samples have a loose porous structure with a large specific surface area. Among them, the sample La0.8Sm0.2Mn0.8Co0.2O3 with doping amount x = 0.2 has higher half-wave potential, onset potential and limiting current density, which has the highest electron transfer number during the oxygen reduction reaction and is more favorable for the 4 e- reaction to occur. In addition, it has the lowest overpotential and the smallest ΔE. It has excellent bifunctional catalytic activity and shows good application prospects.
ISSN:0921-5107
1873-4944
DOI:10.1016/j.mseb.2023.117145