CuCo-mof-74 / nife-ldh composite electrocatalyst, preparation method and application thereof

By constructing a CuCo-MOF-74/NiFe-LDH composite electrocatalyst, combining the advantages of MOFs and LDH, the single-material defects and precious metal dependence of existing electrocatalysts are solved, achieving efficient and low-cost electrocatalytic water splitting.

CN122406299APending Publication Date: 2026-07-17JINLING INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JINLING INST OF TECH
Filing Date
2026-04-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

In existing electrocatalysts, the intrinsic defects of single materials are difficult to complement, traditional composite methods are prone to physical mixing, and they are dependent on precious metals and costly, resulting in slow kinetics and high energy consumption in the oxygen evolution reaction (OER) at the anode, which limits the large-scale application of water electrolysis to produce hydrogen.

Method used

A CuCo-MOF-74/NiFe-LDH composite electrocatalyst was constructed by combining co-precipitation with electrodeposition. By combining the high specific surface area and tunable structural characteristics of MOFs with the good conductivity and stability of LDH, the electronic structure and active site distribution of the materials were optimized, forming strong interfacial coupling and improving catalytic performance.

Benefits of technology

A composite electrocatalyst with high current density, low Tafel slope, and long cycle stability was achieved, which significantly improved the efficiency of electrocatalytic water splitting, reduced production costs, and is suitable for large-scale industrial production.

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Abstract

The application discloses a CuCo-MOF-74 / NiFe-LDH composite electrocatalyst, a preparation method and application thereof, and belongs to the technical field of electrocatalytic materials. The CuCo-MOF-74 is synthesized by a coprecipitation method, and then is compounded with NiFe-LDH through an electrodeposition process to prepare the CuCo-MOF-74 / NiFe-LDH composite electrocatalyst. The main crystal structure of LDH is maintained by adding a proper amount of CuCo-MOF-74 doping, and the interface synergistic effect formed by the two can improve the catalytic activity, and meanwhile, the absorption performance of the material in the ultraviolet-visible light region is optimized, and the material is endowed with a high specific surface area and rich active sites. The preparation method is simple in process and strong in controllability, and the prepared catalyst performs excellently in the electrocatalytic water decomposition oxygen evolution reaction.
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