High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction
Amorphous transition metal compounds (a-TMC) become one of the most promising pre-catalysts toward oxygen evolution reaction (OER) due to their high-entropy nature and flexible self-reconstruction to highly active derivatives. However, the loosen bonds inside the amorphous structure make it an elect...
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KeAi Communications Co. Ltd.
2025-10-01
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| Series: | Advanced Powder Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2772834X2500065X |
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| author | Shiliu Yang Xinhe Liu Xunlu Wang Yan Lin Sina Cheng Hongyang Gao Fan Zhang Li Li Jiabiao Lian Ulla Lassi Ruguang Ma |
| author_facet | Shiliu Yang Xinhe Liu Xunlu Wang Yan Lin Sina Cheng Hongyang Gao Fan Zhang Li Li Jiabiao Lian Ulla Lassi Ruguang Ma |
| author_sort | Shiliu Yang |
| collection | DOAJ |
| description | Amorphous transition metal compounds (a-TMC) become one of the most promising pre-catalysts toward oxygen evolution reaction (OER) due to their high-entropy nature and flexible self-reconstruction to highly active derivatives. However, the loosen bonds inside the amorphous structure make it an electronic insulator with unstable structure. Here, monodispersed Ni2+-phytate nanospheres implanted by Fe3+ ions (NSFeNiPA) were firstly prepared and subsequently transferred into homogeneous high-entropy type Fe-Ni-P-O-C amorphous nanospheres (CNSFeNiPO). It is shown that the CNSFeNiPO presents robust structure and remarkable Fe ions migration during potential-driven activation process, which benefits efficient surface reconstruction and spherical morphology preservation. The CNSFeNiPO with low mass loading of 0.1 mg/cm2 could deliver small overpotential of 270 mV at 10 mA cm−2 and almost 100% retention of the initial current density after 10 h test. The improved electrocatalytic activity is attributed to the boosted electron transfer from Ni sites to O-containing intermediates by introduction of Fe and P atoms. Moreover, rechargeable Zn-air battery with CNSFeNiPO + Pt/C could achieve lower charge potential platform and better cycling performance than that with commercial RuO2+Pt/C. This work provides new insights into the design and understanding of high-entropy amorphous pre-catalysts toward OER. |
| format | Article |
| id | doaj-art-9eb880e89b034bb896cfea9a9d7c3bff |
| institution | DOAJ |
| issn | 2772-834X |
| language | English |
| publishDate | 2025-10-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Advanced Powder Materials |
| spelling | doaj-art-9eb880e89b034bb896cfea9a9d7c3bff2025-08-20T02:56:24ZengKeAi Communications Co. Ltd.Advanced Powder Materials2772-834X2025-10-014510032910.1016/j.apmate.2025.100329High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reactionShiliu Yang0Xinhe Liu1Xunlu Wang2Yan Lin3Sina Cheng4Hongyang Gao5Fan Zhang6Li Li7Jiabiao Lian8Ulla Lassi9Ruguang Ma10School of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, China; Corresponding author.Institute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaSchool of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, ChinaResearch Unit of Sustainable Chemistry, University of Oulu, Oulu, 90570, FinlandSchool of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, ChinaSchool of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, ChinaSchool of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, ChinaSchool of Chemistry and Materials Engineering, Huainan Normal University, Huainan 232038, ChinaInstitute for Energy Research, Jiangsu University, Zhenjiang 212013, ChinaResearch Unit of Sustainable Chemistry, University of Oulu, Oulu, 90570, Finland; Corresponding author.School of Materials Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China; Corresponding author.Amorphous transition metal compounds (a-TMC) become one of the most promising pre-catalysts toward oxygen evolution reaction (OER) due to their high-entropy nature and flexible self-reconstruction to highly active derivatives. However, the loosen bonds inside the amorphous structure make it an electronic insulator with unstable structure. Here, monodispersed Ni2+-phytate nanospheres implanted by Fe3+ ions (NSFeNiPA) were firstly prepared and subsequently transferred into homogeneous high-entropy type Fe-Ni-P-O-C amorphous nanospheres (CNSFeNiPO). It is shown that the CNSFeNiPO presents robust structure and remarkable Fe ions migration during potential-driven activation process, which benefits efficient surface reconstruction and spherical morphology preservation. The CNSFeNiPO with low mass loading of 0.1 mg/cm2 could deliver small overpotential of 270 mV at 10 mA cm−2 and almost 100% retention of the initial current density after 10 h test. The improved electrocatalytic activity is attributed to the boosted electron transfer from Ni sites to O-containing intermediates by introduction of Fe and P atoms. Moreover, rechargeable Zn-air battery with CNSFeNiPO + Pt/C could achieve lower charge potential platform and better cycling performance than that with commercial RuO2+Pt/C. This work provides new insights into the design and understanding of high-entropy amorphous pre-catalysts toward OER.http://www.sciencedirect.com/science/article/pii/S2772834X2500065XHigh-entropy pre-catalystsAmorphous nanospheresSurface reconstructionOxygen evolution reactionZn-air batteries |
| spellingShingle | Shiliu Yang Xinhe Liu Xunlu Wang Yan Lin Sina Cheng Hongyang Gao Fan Zhang Li Li Jiabiao Lian Ulla Lassi Ruguang Ma High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction Advanced Powder Materials High-entropy pre-catalysts Amorphous nanospheres Surface reconstruction Oxygen evolution reaction Zn-air batteries |
| title | High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| title_full | High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| title_fullStr | High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| title_full_unstemmed | High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| title_short | High-entropy type Fe-Ni-P-O-C amorphous Nanospheres: Remarkable Fe-ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| title_sort | high entropy type fe ni p o c amorphous nanospheres remarkable fe ion migration induced efficient surface reconstruction for oxygen evolution reaction |
| topic | High-entropy pre-catalysts Amorphous nanospheres Surface reconstruction Oxygen evolution reaction Zn-air batteries |
| url | http://www.sciencedirect.com/science/article/pii/S2772834X2500065X |
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