A method for rapidly preparing M-N-C materials

By employing a mixed microwave pyrolysis method involving transition metal phthalocyanine, porous carbon, and ZnCl2, the problems of long reaction cycles, high energy consumption, and poor versatility in the preparation of MNC materials have been solved. This method enables rapid and efficient preparation of MNC materials, suitable for various scenarios, particularly the preparation of MNC materials.

CN122105168APending Publication Date: 2026-05-29HUANENG CHONGQING LUOWEN POWER CO LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUANENG CHONGQING LUOWEN POWER CO LTD
Filing Date
2026-01-29
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing methods for preparing MNC materials suffer from problems such as long reaction cycles, high energy consumption, easy agglomeration of metal particles, and poor universality, making it difficult to achieve rapid, efficient, and universal preparation.

Method used

Transition metal phthalocyanine, porous carbon, and ZnCl2 were mixed and ground, then pyrolyzed in a microwave reactor at 800W microwave power for 3-5 minutes. After cooling, the mixture was washed and dried. By utilizing the microwave-enhanced absorption effect of ZnCl2 and the synergistic effect of metal phthalocyanine and porous carbon, MNC materials were rapidly prepared.

Benefits of technology

It significantly shortens the reaction cycle, improves pyrolysis efficiency, ensures the uniform distribution of M-Nx active sites, and is applicable to the synthesis of MNC materials with various transition metal centers, reducing energy consumption and production costs.

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Abstract

Embodiments of the present disclosure provide a method for rapidly preparing M-N-C material, the method comprising mixing a transition metal phthalocyanine, porous carbon and ZnCl2 to obtain a mixture; wherein the mass ratio of the transition metal phthalocyanine to the porous carbon is 1:5-1:20, and the added amount of the ZnCl2 is 10%-30% of the total mass of the transition metal phthalocyanine and the porous carbon; grinding the mixture and placing it in a microwave reactor for heating pyrolysis to obtain a pyrolysis product; after the pyrolysis is completed, cooling the pyrolysis product and washing the pyrolysis product with deionized water, and then drying to obtain the M-N-C material. The method for rapidly preparing M-N-C material of the embodiments of the present disclosure can significantly improve the pyrolysis efficiency through the microwave-enhanced absorption of ZnCl2, and at the same time, with the synergistic effect of the metal phthalocyanine and the porous carbon, the uniform distribution of the active sites of the M-N-C material is ensured, and the synthesis of the M-N-C material suitable for various transition metal centers is strong in universality. x active sites, and is suitable for the synthesis of M-N-C material with various transition metal centers, and is strong in universality.
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