Preparation of CeO2-modified V-NiFeP Bifunctional Catalyst and Its Electrolytic Performance of Seawater

doi:10.7503/cjcu20250201

Abstract

Abstract:

CeO₂-modified vanadium-doped porous nickel-iron phosphide nanosheet catalyst electrodes（V-NiFeP@ CeO₂） were in⁃situ grown on nickel foam substrates through hydrothermal method， phosphating treatment， element doping and electrodeposition. Vanadium doping increased the number of active sites， and phosphorization could adjust the electronic structure. The interface interaction between CeO₂ and V-NiFeP was conducive to electron transfer and reactant adsorption， thereby enhancing the catalytic activity. The hydrogen evolution and oxygen evolution performance of the prepared bifunctional catalyst in alkaline solution and alkaline seawater solution were studied. The results of full water electrolysis tests showed that the required cell voltage of the catalyst at a current density of 100 mA/cm² in alkaline solution and alkaline seawater solution was only 1.83 and 1.85 V， respectively， along with stable operation for 27 h at a current density of 10 mA/cm² without voltage decay. The results indicate that V-NiFeP@CeO₂ has excellent electrocatalytic performance and long-term durability.

Key words: Transition metal phosphides, CeO₂, Electrolysis of seawater, Hydrogen evolution reaction, Oxygen evolution reaction

CLC Number:

O643

TrendMD:

CAI Qi, ZHANG Lingjie, ZHAO Fang, YANG Yang, YU Jing. Preparation of CeO₂-modified V-NiFeP Bifunctional Catalyst and Its Electrolytic Performance of Seawater[J]. Chem. J. Chinese Universities, 2025, 46(11): 20250201.

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References 31

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Preparation of CeO₂-modified V-NiFeP Bifunctional Catalyst and Its Electrolytic Performance of Seawater

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