Positive electrode material and preparation method thereof, positive plate, electrochemical device and electronic equipment

By preparing the positive electrode material in a metal plasma environment, using rod-shaped substances containing metal elements to improve the conductivity and rate performance of lithium iron phosphate batteries, the problems of poor conductivity and rate performance in the prior art are solved, and more efficient battery performance.

CN119481223AActive Publication Date: 2025-02-18ENVISION DYNAMICS TECH (JIANGSU) CO LTD +1
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Patent Information

Application Number
CN202411757841.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-02
Publication Date
2025-02-18
Estimated Expiration
2044-12-02

AI Technical Summary

Technical Problem

The poor conductivity, poor kinetic performance and poor rate performance of existing lithium iron phosphate batteries have limited their further promotion in the battery field.

Method used

By preparing the positive electrode material in the environment of metal plasma, the substance containing metal elements is introduced into the positive electrode active substance, and the part attached to the surface of the positive electrode active substance is controlled to be rod-shaped, thereby forming a conductive network and a support structure, improving the conductive properties of the material and rate performance.

Benefits of technology

The conductivity and rate performance of the positive electrode material is significantly improved, making the battery perform better under high rate conditions, and the preparation method is simple, the device requirements are low, and the environmentally friendly and feasible.

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Abstract

The invention discloses a positive electrode material and a preparation method thereof, a positive plate, an electrochemical device and electronic equipment, the positive electrode material comprises a positive electrode active material and a metal element-containing material, and the metal element-containing material comprises a metal oxide and / or a nano metal simple substance; at least part of the metal element-containing substance is attached to the surface of the positive electrode active substance, and at least part of the metal element-containing substance attached to the surface of the positive electrode active substance is rod-shaped. The positive electrode material has excellent conductivity, and has excellent rate capability when being applied to a battery.
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Citation Information

Patent Citations

  • Hydrothermal preparation method of zinc oxide-lithium iron phosphate composite anode material

    CN102244242A

  • Metallic film capable of improving stability of anode of lithium ion battery and manufacturing method

    CN101692493A

  • Surface modification method of lithium iron phosphate cathode material

    CN102544505A

  • Ternary anode material with metallic oxide coated surface and preparation method of ternary anode material

    CN108258224A

  • Positive electrode active material, positive electrode, lithium ion battery comprising positive electrode, and method for manufacturing positive electrode active material

    CN112531157A

Cited By

  • Positive electrode material, secondary battery and electronic apparatus

    WO2026174453A1