A single-crystal cathode material, its preparation method and application
By controlling the particle size and density of the single-crystal cathode material and employing specific sintering and co-precipitation reaction processes, the problem of low conductivity was solved, thereby improving the rate performance of the battery.
CN120749145BActive Publication Date: 2026-07-17GEM WUXI ENERGY MATERIAL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- GEM WUXI ENERGY MATERIAL CO LTD
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
The low conductivity of existing single-crystal cathode materials results in poor rate performance when they are used to make batteries.
Method used
By controlling the median particle size of the single-crystal cathode material to be 2.8-3.5 μm and the compaction density to be 3.00-3.80 g/cm3, and by employing specific sintering and co-precipitation reaction processes, including multi-stage co-precipitation reaction and two sintering processes, combined with metal doping and oxide coating, the material structure and conductivity are optimized.
Benefits of technology
It improves the electronic conductivity of single-crystal cathode materials, enhances the material's electronic conduction ability at high rates, and improves the rate performance of the battery.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN120749145B_ABST
Abstract
This invention belongs to the field of cathode material technology, specifically relating to a single-crystal cathode material, its preparation method, and its applications. The single-crystal cathode material has a median particle size of 2.8–3.5 μm and a compaction density of 3.00–3.80 g / cm³. 3 The specific particle size of single-crystal cathode materials is beneficial for lithium-ion insertion and extraction; it also provides more reaction interfaces, which is conducive to ion movement; the specific compaction density ensures that more single crystals can be filled in the same electrode volume, and ensures that the single crystals are in closer and more complete contact with other materials in the cathode active layer; it reduces electronic conduction impedance, and the single-crystal cathode material is fully combined with the conductive agent, which improves the electronic conductivity of the single-crystal cathode material. The high conductivity ensures that the material can quickly conduct electrons and ions at high rates, thereby improving the rate performance of batteries made of single-crystal cathode materials.
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