锂电池正极材料及其再生方法
By using a deep eutectic solvent system and coordination precipitation reaction, the problem of material heterogeneity in the regeneration of lithium battery cathode materials was solved, realizing an efficient and simple regeneration process and preparing cathode materials with excellent electrochemical performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUAZHONG UNIV OF SCI & TECH
- Filing Date
- 2026-03-26
- Publication Date
- 2026-07-17
AI Technical Summary
Existing lithium battery cathode material regeneration processes cannot adapt to waste NCM materials with different degradation levels and ratios, resulting in uneven lithium replenishment, uncontrolled phase transitions, and require complex sorting and high energy consumption, leading to low efficiency.
By employing a deep eutectic solvent system, including oxalic acid dihydrate and quaternary ammonium salt, lithium is selectively leached and transition metals are simultaneously precipitated under mild conditions through coordination precipitation reaction. The stoichiometric ratio of nickel, cobalt, and manganese is adjusted to prepare a uniform cathode material.
This method achieves efficient and selective leaching of lithium and simultaneous fixation of transition metals, shortens the regeneration cycle, reduces costs, avoids complex sorting steps, and improves the electrochemical performance and recycling efficiency of the material.
Smart Images
Figure CN121913562B_ABST