Magnetic-field-regulated electrocatalytic performance in cubic perovskite oxide

Regulation of electrocatalysis by an external magnetic field has been recently reported, but the physical understanding of what triggers this effect remains elusive. Most cases occur in transition-metal oxychalcogenides with ferromagnetism/ferrimagnetism, but the research on perovskite oxide catalys...

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Bibliographic Details
Published in:Applied physics letters 2023-11, Vol.123 (22)
Main Authors: Huang, Yuhu, Xu, Han-Shu
Format: Article
Language:English
Subjects:
Applied physics
Electrocatalysis
Electrochemical analysis
Ferrimagnetism
Ferromagnetism
Magnetic fields
Perovskites
Playgrounds
Transition metals
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Summary:Regulation of electrocatalysis by an external magnetic field has been recently reported, but the physical understanding of what triggers this effect remains elusive. Most cases occur in transition-metal oxychalcogenides with ferromagnetism/ferrimagnetism, but the research on perovskite oxide catalysts is still lacking. In this work, we synthesized a series of Eu element-substituted Ba0.5Sr0.5Co0.8Fe0.2O3 cubic perovskites, and importantly, the regulation of the electrochemical performance by the magnetic field was achieved in Eu0.3(Ba0.5Sr0.5)0.7Co0.8Fe0.2O3 at 273 K, regardless of the direction of the applied magnetic field. Our results promote the use of the magnetic field as an interesting playground to ameliorate electrocatalysis of perovskite oxides close to the paramagnetic state.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0175438