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Enhancing the Catalysis for Electrochemical Water Splitting using Tri-metallic Phosphide Surface

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Názov: Enhancing the Catalysis for Electrochemical Water Splitting using Tri-metallic Phosphide Surface
Autori: Wenjie Liang, Lisi Yin, Yilin Zhou, Pan Yuan, Dan Wu, Xuehan Yang, Tao Yang
Zdroj: Journal of Material Science and Technology Research. 10:39-49
Informácie o vydavateľovi: Zeal Press, 2025.
Rok vydania: 2025
Predmety: 01 natural sciences, 7. Clean energy, 0104 chemical sciences
Popis: Hydrogen has been considered as one of the sustainable energy carriers and displays great potential for the ever-increasing energy and environmental demands. Electrochemical water splitting has been recognized as a clean and effective method to product hydrogen in future. Transitionally, the catalysts for water splitting are noble metal base materials but suffer from high cost and low reserves. Thus, developing cost-effective electrocatalysts is significantly important for the hydrogen generation. Here, we report a tri-metallic phosphide of NiCoFe-P as an effective electrocatalyst for both HER and OER, which can be prepared by a facile gas-phase reaction. Compared with monometallic or bimetallic phosphides, the tri-metallic NiCoFe-P exhibits outstanding activity. Specially, it obtains an OER current density of 10 mA cm-2 at an overpotential of 248 mV. Additionally, the NiCoFe-P catalyst shows remarkable stabilities even at a large current density of 50 mA cm-2. Moreover, a practical electrode of carbon paper supported NiCoFe-P only requires an overpotential of 267 mV to obtain an HER current density of 10 mA cm-2, and overpotentials of 235 mV and 296 mV for the OER current densities of 50 mA cm-2 and 100 mA cm-2, respectively. After a severe durability test of 5000 cycles of linear scan voltammetry, the carbon paper supported catalyst show no degradation. The remarkable catalytic performance should be due to the unique nanostructure and the synergism effect among the hetero-atoms.
Druh dokumentu: Article
ISSN: 2410-4701
DOI: 10.31875/2410-4701.2023.10.05
Prístupové číslo: edsair.doi...........b560c9d765d9e2a498f00a3bd9a7fd56
Databáza: OpenAIRE
Popis
Abstrakt:Hydrogen has been considered as one of the sustainable energy carriers and displays great potential for the ever-increasing energy and environmental demands. Electrochemical water splitting has been recognized as a clean and effective method to product hydrogen in future. Transitionally, the catalysts for water splitting are noble metal base materials but suffer from high cost and low reserves. Thus, developing cost-effective electrocatalysts is significantly important for the hydrogen generation. Here, we report a tri-metallic phosphide of NiCoFe-P as an effective electrocatalyst for both HER and OER, which can be prepared by a facile gas-phase reaction. Compared with monometallic or bimetallic phosphides, the tri-metallic NiCoFe-P exhibits outstanding activity. Specially, it obtains an OER current density of 10 mA cm-2 at an overpotential of 248 mV. Additionally, the NiCoFe-P catalyst shows remarkable stabilities even at a large current density of 50 mA cm-2. Moreover, a practical electrode of carbon paper supported NiCoFe-P only requires an overpotential of 267 mV to obtain an HER current density of 10 mA cm-2, and overpotentials of 235 mV and 296 mV for the OER current densities of 50 mA cm-2 and 100 mA cm-2, respectively. After a severe durability test of 5000 cycles of linear scan voltammetry, the carbon paper supported catalyst show no degradation. The remarkable catalytic performance should be due to the unique nanostructure and the synergism effect among the hetero-atoms.
ISSN:24104701
DOI:10.31875/2410-4701.2023.10.05