Method for synthesizing nickel-modified platinum-based nitrogen-doped graphdiyne catalyst based on atomic layer deposition technology and application thereof

By modifying nickel on a nitrogen-doped graphylene support, the electronic structure of platinum nanoparticles was optimized, solving the resource scarcity and stability problems of platinum-based catalysts in zinc-air batteries and achieving high-efficiency oxygen reduction reaction performance.

CN122393324APending Publication Date: 2026-07-14HENAN NORMAL UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN NORMAL UNIV
Filing Date
2026-04-14
Publication Date
2026-07-14

AI Technical Summary

Technical Problem

The oxygen reduction reaction kinetics of existing zinc-air batteries are slow, and platinum-based catalysts are scarce and prone to migration and aggregation, leading to the loss of active sites. How can we improve the atom utilization and stability while reducing the platinum loading?

Method used

Nickel-modified platinum-based nitrogen-doped graphyne catalysts were prepared by modifying a nitrogen-doped graphyne support with nickel using atomic layer deposition (ALD). By controlling the size and dispersion of platinum nanoparticles and utilizing the charge transfer and lattice strain effects between nickel and platinum, the electronic structure of the catalyst was optimized.

Benefits of technology

It significantly improves the catalytic efficiency and cycle stability of platinum nanoparticles, reduces the amount of platinum required, and enhances the electrocatalytic activity and kinetic performance of the oxygen reduction reaction, providing a highly efficient catalyst with low platinum loading for zinc-air batteries.

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Abstract

The application discloses a method for synthesizing a nickel-modified platinum-based nitrogen-doped graphdiyne catalyst based on an atomic layer deposition technology and application thereof, and the method comprises the following steps: vacuum ball milling and calcining and purifying hexabromobenzene and calcium carbide to obtain a graphdiyne carrier; mixing and calcining the carrier and melamine to realize nitrogen doping of the carrier; using atomic layer deposition technology to load platinum nanoparticles on the nitrogen-doped graphdiyne by taking trimethylcyclopentadienyl platinum (MeCpPtMe3) as a platinum source; and using atomic layer deposition technology to deposit an ultrathin nickel layer on the surface of the platinum nanoparticles by taking nickelocene (NiCp2) as a nickel source to obtain the catalyst. The method utilizes the atomic-level surface regulation characteristics of the atomic layer deposition technology, and realizes effective optimization of the electronic structure of the surface of the platinum nanoparticles by accurately controlling the deposition cycle number of nickel. The nickel-modified platinum-based nitrogen-doped graphdiyne catalyst prepared by the method exhibits excellent electrocatalytic activity and kinetic performance, and provides a high-efficiency low-platinum catalyst solution for a zinc-air battery.
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