Positive electrode material and lithium-ion battery
By controlling the crystallinity and particle size in lithium nickel cobalt composite oxide cathode materials, the problems of long transport paths in single-crystal materials and low strength in polycrystalline materials are solved, achieving high-capacity and well-cycle-stable lithium-ion battery performance.
WO2026138634A1PCT designated stage Publication Date: 2026-07-02BTR (JIANGSU) NEW MATERIAL TECHNOLOGY CO LTD
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- BTR (JIANGSU) NEW MATERIAL TECHNOLOGY CO LTD
- Filing Date
- 2025-12-18
- Publication Date
- 2026-07-02
Smart Images
Figure CN2025143485_02072026_PF_FP_ABST
Abstract
The present application discloses a positive electrode material, wherein the positive electrode material is a lithium nickel cobalt-based composite oxide, the positive electrode material comprises secondary particles, the secondary particles comprise a plurality of primary particles, the positive electrode material has a primary particle crystallite coefficient P, and the crystallite coefficient P satisfies 20000 ≤ P ≤ 100000. By means of the described method, the present application provides a single-crystal material, wherein a crystallite count within a primary particle is increased, thereby enhancing the ionic conductivity of the material, and overcoming the problem of high impedance and low capacity of large-grain single crystals.
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