Preparation method of nickel oxide loaded platinum hydrogen evolution catalyst

Nickel oxide-supported platinum catalysts were prepared by high-temperature calcination and hydrothermal reaction, which solved the problems of complex preparation and high cost of platinum-based catalysts in the prior art. This method achieved high-efficiency hydrogen evolution performance with low platinum content and is suitable for the field of electrolytic hydrogen production.

CN121380976APending Publication Date: 2026-01-23HEBEI NORMAL UNIV
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Patent Information

Application Number
CN202511423903.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-30
Publication Date
2026-01-23

AI Technical Summary

Technical Problem

In existing technologies, the preparation process of platinum-based hydrogen evolution catalysts is complex and costly, which limits their widespread application in the field of electrolytic hydrogen production, especially due to the limited reserves and high price of platinum.

Method used

A nickel oxide-supported platinum hydrogen evolution catalyst was prepared by calcining nickel acetate tetrahydrate and graphite at high temperature and then reacting them with chloroplatinic acid solution via hydrothermal reaction. This process simplifies the process and reduces the amount of platinum used.

Benefits of technology

The prepared catalyst exhibits excellent HER catalytic performance, low platinum content and low cost, and demonstrates faster hydrogen evolution reaction kinetics and higher current density, making it commercially viable.

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Abstract

The invention discloses a preparation method of a nickel oxide supported platinum hydrogen evolution catalyst, and belongs to the technical field of catalytic materials. The preparation method comprises the following main steps: weighing 0.2 g of nickel acetate tetrahydrate and 0.2 g of graphite, uniformly grinding, then transferring into a muffle furnace, calcining for 1-3 hours in an air atmosphere at 450-750 DEG C to obtain a precursor A, weighing 4-18 mg of the precursor A, putting into a certain amount of H2PtCl6 solution with the concentration of 0.2-1.5 mmol / L, carrying out ultrasonic treatment for 30-60 minutes, then heating for 5-10 hours in a reaction kettle at 160-200 DEG C to complete a hydrothermal reaction, cooling to room temperature, carrying out suction filtration, and drying, so as to obtain the nickel acetate / graphite composite material. The prepared catalyst is obtained. The prepared catalyst has the catalytic effect equivalent to that of commercial Pt / C, the usage amount of platinum is remarkably reduced compared with that of commercial Pt / C, and the catalyst has commercial application prospects.
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