PLASMA TREATED VANADIUM DOPED NICKEL-IRON BASED ELECTROCATALYST FOR EFFICIENT HYDROGEN EVOLUTION

Jin Baojie; Wang Jing; Zhu Xiaoning; Huang Linquan

doi:10.19912/j.0254-0096.tynxb.2022-1810

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Acta Energiae Solaris Sinica ›› 2024, Vol. 45 ›› Issue (3) : 305-309. DOI: 10.19912/j.0254-0096.tynxb.2022-1810

PLASMA TREATED VANADIUM DOPED NICKEL-IRON BASED ELECTROCATALYST FOR EFFICIENT HYDROGEN EVOLUTION

Jin Baojie, Wang Jing, Zhu Xiaoning, Huang Linquan

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Abstract

In this study, V-doped nickel-iron layered double hydroxide （NiFe LDH） grows in situ on the surface of nickel foam by one-step hydrothermal method, combines with H₂ plasma reduction, to construct a heterostructure of Ni nanoparticles anchored to a large number of oxygen vacancies and nickel vacancies, increase the number of active sites, and enhance the HER activity of NiFe LDH. The results show that the overpotential of the catalyst at a current density of 10 mA/cm² in a 1 mol/L KOH electrolyte is only 37.5 mV, and the Tafel slope is 49 mV/dec, and its hydrogen evolution activity is not significantly attenuated after 100 h constant current test. In addition, it also has good hydrogen evolution activity and stability in the total hydrolysis test, and the total hydrolysis voltage at a current density of 10 mA/cm² is only 1.57 V, and its hydrogen evolution activity does not decrease significantly after 1000 h constant current test.

Key words

plasma / nickel-iron hydroxide / electrocatalyst / hydrogen evolution reaction / heterojunction

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Jin Baojie, Wang Jing, Zhu Xiaoning, Huang Linquan. PLASMA TREATED VANADIUM DOPED NICKEL-IRON BASED ELECTROCATALYST FOR EFFICIENT HYDROGEN EVOLUTION[J]. Acta Energiae Solaris Sinica. 2024, 45(3): 305-309 https://doi.org/10.19912/j.0254-0096.tynxb.2022-1810

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