A carbon framework supported and embedded Ni3ZnC 0.7 Preparation method and application of NiPt1 single-atom alloy catalyst

By preparing the Ni3ZnC0.7@NiPt1 catalyst, the problem of OH blockage in Ni-based single-atom alloy catalysts was solved, and efficient alkaline HER catalysis was achieved, exhibiting low voltage and good stability.

CN122128743APending Publication Date: 2026-06-02TAIYUAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
TAIYUAN UNIVERSITY OF TECHNOLOGY
Filing Date
2025-12-26
Publication Date
2026-06-02

AI Technical Summary

Technical Problem

Existing Ni-based single-atom alloy catalysts suffer from excessive OH coverage in alkaline HER, leading to blockage of active sites, slow water dissociation kinetics, and affecting catalyst stability and efficiency.

Method used

Using a core-shell structure ZIF-8@Ni-MOF as a precursor, porous carbon-supported Ni particles embedded in Ni3ZnC0.7 were prepared by controlling the pyrolysis temperature, time, and Zn/Ni molar ratio. Pt single atoms were then anchored on the surface of Ni particles using an electric current displacement reaction to form a Ni3ZnC0.7@NiPt1 catalyst. The electronic structure of Ni was controlled and etched into small nanoclusters.

Benefits of technology

It effectively alleviates OH blockage, lowers the water dissociation energy barrier, and achieves highly efficient alkaline HER catalysis, demonstrating superior electrocatalytic performance and stability. The battery voltage is lower than that of existing technologies, and it has strong durability.

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Abstract

The purpose of this invention is to provide a carbon framework supported and embedded Ni3ZnC 0.7 This paper describes the preparation method and application of NiPt1 single-atom alloy catalysts, belonging to the field of functional materials technology. Using a core-shell structure ZIF-8@Ni-MOF as a precursor, porous carbon-supported Ni3ZnC catalysts are prepared by controlling the pyrolysis temperature, time, and Zn / Ni molar ratio. 0.7 Ni particles; Pt single atoms are anchored in situ using current displacement to form a supported single-atom alloy catalyst. Because Pt 4+ with Ni 0 A current displacement reaction occurs, causing Ni nanoparticles to be etched into small nanoclusters, while simultaneously anchoring Pt single atoms to their surface, thus producing a Ni3ZnC coating. 0.7 The outer layer is a NiPt1 single-atom alloy. Ni3ZnC 0.7 The tunable electronic structure of Ni can alleviate OH blockage and lower the water dissociation energy barrier, providing a new pathway for the development of highly efficient alkaline HER catalysts.
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