Nickel-based catalyst as well as preparation method and application thereof

By electrodepositing nickel-cobalt sulfides on a nickel foam support and introducing phosphorus, a nickel-based catalyst was prepared, which solved the problem of insufficient catalytic activity and stability of nickel-based catalysts in the urea oxidation reaction, and achieved a low-energy-consumption and high-efficiency urea oxidation effect.

CN121874841APending Publication Date: 2026-04-17EAST CHINA UNIV OF SCI & TECH
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Patent Information

Application Number
CN202610017538.6
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-07
Publication Date
2026-04-17

AI Technical Summary

Technical Problem

Existing nickel-based catalysts struggle to achieve both good catalytic activity and stability in urea oxidation, especially given the slow kinetics of the six-electron transfer reaction under alkaline conditions.

Method used

A nickel-based catalyst containing Ni3S2, Co9S8 and phosphorus-containing substances was prepared by electrodeposition on a nickel foam support, followed by annealing, to prepare a nickel-based catalyst for urea oxidation reaction.

Benefits of technology

It improves the catalytic kinetics and stability of the catalyst, exhibiting low onset potential, high current density and long-term stability, avoiding the problem of active component detachment, and the preparation method is simple and inexpensive.

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Abstract

The invention discloses a nickel-based catalyst as well as a preparation method and application thereof. The preparation method of the nickel-based catalyst comprises the following steps: S1, carrying out electro-deposition on a deposition solution in a three-electrode system taking foamed nickel as a working electrode; a precursor material is obtained; the deposition liquid comprises nickel salt, cobalt salt, thiourea and a phosphorus source; the phosphorus source comprises hypophosphite and / or phosphite; and S2, carrying out annealing treatment on the precursor material. The nickel-based catalyst prepared by the preparation method disclosed by the invention is applied to a urea oxidation reaction and has relatively good catalytic activity and stability.
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