Method for preparing molybdenum carbide / carbon nanospheres based on electrospinning technology and application thereof

The preparation of molybdenum carbide/carbon composite nanospheres by electrospinning and high-temperature heat treatment solves the problem of large-scale production of existing methods, realizes the uniformity and high efficiency of the material, and is suitable for catalysis, energy storage and sensing.

CN117623312BActive Publication Date: 2026-06-26DALIAN POLYTECHNIC UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
DALIAN POLYTECHNIC UNIVERSITY
Filing Date
2023-11-29
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing methods for preparing molybdenum carbide nanospheres are difficult to apply to large-scale production, and these methods require high temperature and high pressure or complex equipment, making it difficult to control particle size and shape, resulting in uneven material properties.

Method used

Molybdenum carbide/carbon composite nanospheres were prepared by electrospinning combined with high-temperature heat treatment. The precursor nanospheres were formed by dissolving ammonium molybdate and polyacrylonitrile in dimethylformamide and electrospinning them. Subsequently, the nanospheres were heat-treated under a nitrogen atmosphere to control the particle size and shape.

Benefits of technology

Molybdenum carbide/carbon composite nanospheres with good dispersion and uniform size were prepared, which are suitable for catalysis, energy storage and sensing, providing high specific surface area and mechanical stability, and improving catalytic activity and energy storage performance.

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Abstract

The application provides a method for preparing molybdenum carbide / carbon composite nanospheres based on electrostatic spinning technology, which comprises the following steps: adding ammonium molybdate into dimethylformamide, stirring for 2 hours, then adding polyacrylonitrile, and stirring for 6 hours to obtain a spinning solution; loading the spinning solution into a 10 mL syringe for electrostatic spinning to obtain precursor nanospheres Mo@PAN, and placing the precursor nanospheres in a tube furnace for heat treatment to obtain molybdenum carbide / carbon composite nanospheres. The application also provides applications in the fields of electrocatalytic hydrogen evolution, energy storage and coating materials. The molybdenum carbide / carbon composite nanospheres prepared by the method have uniform size distribution and good dispersibility. The spherical structure has good mechanical properties, and can ensure the structural stability of the material in the application process, preventing the microstructure of the material from being damaged. Meanwhile, the nanoscale spherical morphology provides a high specific surface area, which provides more active sites for the material in the applications of catalysis and energy storage, and is beneficial to improving the performance of the material.
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