Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction
Electrocatalysts with heterobimetallic active sites are considered to be effective geometries for electrocatalytic oxygen evolution reaction (OER). However, MOF-derived heterobimetallic phosphides are uncontrollable and the addition of traditional binders is complicated. Here, we designed an efficie...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-09-01
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| Series: | Materials Today Catalysis |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2949754X25000274 |
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| author | Adjapong Linda Akua Agyapomaa Chulong Jin Qingqing Zhang Xiaojun Zeng |
| author_facet | Adjapong Linda Akua Agyapomaa Chulong Jin Qingqing Zhang Xiaojun Zeng |
| author_sort | Adjapong Linda Akua Agyapomaa |
| collection | DOAJ |
| description | Electrocatalysts with heterobimetallic active sites are considered to be effective geometries for electrocatalytic oxygen evolution reaction (OER). However, MOF-derived heterobimetallic phosphides are uncontrollable and the addition of traditional binders is complicated. Here, we designed an efficient defect-rich (NF/Ni2P-Fe2P@NC) heterostructure derived from NF/Fe-MOF, in which nickel foam (NF) provides a supporting role and Ni source to promote the formation of heterobimetallic phosphides (Ni2P, Fe2P). NF/Ni2P-Fe2P@NC inherits remarkable OER performance with ultralow overpotential of 123 mV at a current density of 10 mA cm−2 and Tafel slope of 51. 3 mV dec−1 in alkaline electrolyte. The experimental results unravel that the multi-components (Ni2P, Fe2P, NC), rich heterogeneous interfaces (Ni2P/Fe2P), and numerous defects in the heterostructure provide abundant active sites, optimize the electronic structure, and improve the exposure of active sites, thereby promoting the electrocatalytic OER process. Density functional theory (DFT) calculations confirm that the free energy barrier for the catalyst to generate *OOH intermediates is low. Our findings present a simple and economical approach to obtaining heterobimetallic phosphides with robust OER performance. |
| format | Article |
| id | doaj-art-e6ee85f4fe1a4d07a16343816baabcc2 |
| institution | Kabale University |
| issn | 2949-754X |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials Today Catalysis |
| spelling | doaj-art-e6ee85f4fe1a4d07a16343816baabcc22025-08-20T03:41:36ZengElsevierMaterials Today Catalysis2949-754X2025-09-011010011410.1016/j.mtcata.2025.100114Construction of self-supporting heterobimetallic phosphides for oxygen evolution reactionAdjapong Linda Akua Agyapomaa0Chulong Jin1Qingqing Zhang2Xiaojun Zeng3School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, ChinaSchool of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, ChinaSchool of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, ChinaCorresponding author.; School of Materials Science and Engineering, Jingdezhen Ceramic University, Jingdezhen 333403, ChinaElectrocatalysts with heterobimetallic active sites are considered to be effective geometries for electrocatalytic oxygen evolution reaction (OER). However, MOF-derived heterobimetallic phosphides are uncontrollable and the addition of traditional binders is complicated. Here, we designed an efficient defect-rich (NF/Ni2P-Fe2P@NC) heterostructure derived from NF/Fe-MOF, in which nickel foam (NF) provides a supporting role and Ni source to promote the formation of heterobimetallic phosphides (Ni2P, Fe2P). NF/Ni2P-Fe2P@NC inherits remarkable OER performance with ultralow overpotential of 123 mV at a current density of 10 mA cm−2 and Tafel slope of 51. 3 mV dec−1 in alkaline electrolyte. The experimental results unravel that the multi-components (Ni2P, Fe2P, NC), rich heterogeneous interfaces (Ni2P/Fe2P), and numerous defects in the heterostructure provide abundant active sites, optimize the electronic structure, and improve the exposure of active sites, thereby promoting the electrocatalytic OER process. Density functional theory (DFT) calculations confirm that the free energy barrier for the catalyst to generate *OOH intermediates is low. Our findings present a simple and economical approach to obtaining heterobimetallic phosphides with robust OER performance.http://www.sciencedirect.com/science/article/pii/S2949754X25000274Self-supportingHeterobimetallic phosphidesDefectsIon exchangeOxygen evolution reaction |
| spellingShingle | Adjapong Linda Akua Agyapomaa Chulong Jin Qingqing Zhang Xiaojun Zeng Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction Materials Today Catalysis Self-supporting Heterobimetallic phosphides Defects Ion exchange Oxygen evolution reaction |
| title | Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction |
| title_full | Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction |
| title_fullStr | Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction |
| title_full_unstemmed | Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction |
| title_short | Construction of self-supporting heterobimetallic phosphides for oxygen evolution reaction |
| title_sort | construction of self supporting heterobimetallic phosphides for oxygen evolution reaction |
| topic | Self-supporting Heterobimetallic phosphides Defects Ion exchange Oxygen evolution reaction |
| url | http://www.sciencedirect.com/science/article/pii/S2949754X25000274 |
| work_keys_str_mv | AT adjaponglindaakuaagyapomaa constructionofselfsupportingheterobimetallicphosphidesforoxygenevolutionreaction AT chulongjin constructionofselfsupportingheterobimetallicphosphidesforoxygenevolutionreaction AT qingqingzhang constructionofselfsupportingheterobimetallicphosphidesforoxygenevolutionreaction AT xiaojunzeng constructionofselfsupportingheterobimetallicphosphidesforoxygenevolutionreaction |