Mohammed Arkham Belgami, Afsal S Shajahan, Erdenebayar Baasanjav, Vishwanath Ankalgi, Brahmananda Chakraborty, Sang Mun Jeong, Chandra Sekhar Rout
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The enhancement is attributed to magnetic-field-induced spin polarization, surface reconstruction, and increased ECSA from 70 to 110 mF cm<sup>−2</sup>, highlighting the potential of magnetic modulation for boosting catalytic performance. Through spin-polarized Density Functional Theory (DFT) simulations, the structural and electronic features of CoFeP, providing theoretical insights into its role in the Oxygen Evolution Reaction (OER) is elucidated. This investigation demonstrates that the application of an external magnetic field significantly reduces the overpotential required for OER as the adsorption of intermediate species becomes stronger due to more charge transfer, aligning with experimental observations. These findings highlight the interplay between magnetic fields and electrocatalytic performance, offering a pathway to enhance energy conversion efficiency.</p>","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"12 17","pages":""},"PeriodicalIF":4.4000,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202500321","citationCount":"0","resultStr":"{\"title\":\"Experimental and Theoretical Investigations on Magneto-Electrochemical Oxygen Evolution Reaction of CoFeP Nanorods\",\"authors\":\"Mohammed Arkham Belgami, Afsal S Shajahan, Erdenebayar Baasanjav, Vishwanath Ankalgi, Brahmananda Chakraborty, Sang Mun Jeong, Chandra Sekhar Rout\",\"doi\":\"10.1002/admi.202500321\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The pursuit of low-cost, efficient, and durable electrocatalysts for oxygen evolution in alkaline media is vital for water-splitting applications. Herein, the hydrothermal-based synthesis of a multiphase ferromagnetic catalyst CoFeP, comprising FeP, CoP, and Fe<sub>2</sub>P is reported. Structural analyses confirm the coexistence of phases, and electrochemical studies reveal excellent OER activity. CoFeP exhibits an overpotential of 335 mV at 50 mA cm<sup>−2</sup> and a Tafel slope of 116 mV dec<sup>−1</sup> without a magnetic field, whereas under the magnetic field of 2000 G, these values lowered to 235 mV and 93 mV dec<sup>−1</sup>, respectively. The enhancement is attributed to magnetic-field-induced spin polarization, surface reconstruction, and increased ECSA from 70 to 110 mF cm<sup>−2</sup>, highlighting the potential of magnetic modulation for boosting catalytic performance. Through spin-polarized Density Functional Theory (DFT) simulations, the structural and electronic features of CoFeP, providing theoretical insights into its role in the Oxygen Evolution Reaction (OER) is elucidated. This investigation demonstrates that the application of an external magnetic field significantly reduces the overpotential required for OER as the adsorption of intermediate species becomes stronger due to more charge transfer, aligning with experimental observations. These findings highlight the interplay between magnetic fields and electrocatalytic performance, offering a pathway to enhance energy conversion efficiency.</p>\",\"PeriodicalId\":115,\"journal\":{\"name\":\"Advanced Materials Interfaces\",\"volume\":\"12 17\",\"pages\":\"\"},\"PeriodicalIF\":4.4000,\"publicationDate\":\"2025-07-31\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/admi.202500321\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials Interfaces\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202500321\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials Interfaces","FirstCategoryId":"88","ListUrlMain":"https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202500321","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Experimental and Theoretical Investigations on Magneto-Electrochemical Oxygen Evolution Reaction of CoFeP Nanorods
The pursuit of low-cost, efficient, and durable electrocatalysts for oxygen evolution in alkaline media is vital for water-splitting applications. Herein, the hydrothermal-based synthesis of a multiphase ferromagnetic catalyst CoFeP, comprising FeP, CoP, and Fe2P is reported. Structural analyses confirm the coexistence of phases, and electrochemical studies reveal excellent OER activity. CoFeP exhibits an overpotential of 335 mV at 50 mA cm−2 and a Tafel slope of 116 mV dec−1 without a magnetic field, whereas under the magnetic field of 2000 G, these values lowered to 235 mV and 93 mV dec−1, respectively. The enhancement is attributed to magnetic-field-induced spin polarization, surface reconstruction, and increased ECSA from 70 to 110 mF cm−2, highlighting the potential of magnetic modulation for boosting catalytic performance. Through spin-polarized Density Functional Theory (DFT) simulations, the structural and electronic features of CoFeP, providing theoretical insights into its role in the Oxygen Evolution Reaction (OER) is elucidated. This investigation demonstrates that the application of an external magnetic field significantly reduces the overpotential required for OER as the adsorption of intermediate species becomes stronger due to more charge transfer, aligning with experimental observations. These findings highlight the interplay between magnetic fields and electrocatalytic performance, offering a pathway to enhance energy conversion efficiency.
期刊介绍:
Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018.
The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface.
Advanced Materials Interfaces covers all topics in interface-related research:
Oil / water separation,
Applications of nanostructured materials,
2D materials and heterostructures,
Surfaces and interfaces in organic electronic devices,
Catalysis and membranes,
Self-assembly and nanopatterned surfaces,
Composite and coating materials,
Biointerfaces for technical and medical applications.
Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.