Sulfur-doped ferronickel oxide electrocatalyst with nano flower-shaped structure as well as preparation method and application of sulfur-doped ferronickel oxide electrocatalyst

By forming a sulfur-doped nickel-iron oxide electrocatalyst with a nanoflower-like structure on the surface of the foam nickel foam, the problems of slow anode reaction speed and high cost of precious metal catalysts in hydrogen production by electrolyzing water are solved, and efficient and stable electrocatalytic methanol oxidation is achieved , reduces electricity consumption and is suitable for large-scale applications.

CN119243239APending Publication Date: 2025-01-03ZHEJIANG SCI-TECH UNIV
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Patent Information

Application Number
CN202411379984.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-09-30
Publication Date
2025-01-03

AI Technical Summary

Technical Problem

In the prior art, the oxygen evolution reaction speed of the anode produced by electrolyzing water is slow, which limits the large-scale development of hydrogen. The precious metal platinum catalyst is costly and difficult to widely use. The electrocatalytic performance of Ni substrate materials is not high, and optimization is needed to improve. Catalytic efficiency of electrode materials.

Method used

Using foam nickel as a support, a sulfur-doped nickel-iron oxide electrocatalyst with a nanoflower-like structure is formed on its surface by hydrothermal reaction, adjust the electronic structure of the iron-nickel electrocatalyst, reduce the chemical valence states of iron and nickel, and improve catalytic activity. Contact efficiency of sites reduces adsorption of methanol oxidation intermediates.

Benefits of technology

It significantly improves the efficiency and stability of electrocatalytic methanol oxidation, reduces electricity consumption, demonstrates good anti-CO poisoning performance, and is cheap in material costs, which is suitable for large-scale applications.

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Abstract

The invention relates to the field of electrochemistry, and discloses a sulfur-doped ferronickel oxide electrocatalyst with a nano flower-shaped structure as well as a preparation method and application of the sulfur-doped ferronickel oxide electrocatalyst. According to the sulfur-doped nickel-iron oxide electrocatalyst with the nano flower-shaped structure, foamed nickel serves as a substrate, nickel-iron oxide is synthesized through two-step hydrothermal reaction, and then sulfur doping is conducted. The electrocatalyst has a nanoflower-like structure, can effectively promote charge transfer and reduce adsorption to a methanol oxidation intermediate (CO), shows good CO poisoning resistance, can significantly reduce methanol oxidation overpotential and improve the efficiency of electrocatalytic oxidation of methanol, and has good stability.
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Citation Information

Patent Citations

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  • Preparation method of foamed nickel loaded Ni(OH)2 / FeOOH nanoflower material

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  • Transition metal sulfide composite hydroxide electrode preparation method and application thereof

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  • Preparation method of sulfur-doped nickel-iron hydroxide ultrathin nanosheet

    CN116282230A

  • Methanol oxidation electrocatalyst as well as preparation method and application thereof

    CN116288398A