一种废旧锂电池正极材料剥离并直接再生的方法
By peeling off LiCoO2 cathode material through spraying lithium salt solution and low-temperature calcination, the LiCoO2 cathode material is regenerated, which solves the problems of structural damage or the use of large amounts of reagents in existing technologies and achieves efficient and environmentally friendly regeneration.
CN116344989BActive Publication Date: 2026-07-17BEIJING UNIV OF TECH
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- BEIJING UNIV OF TECH
- Filing Date
- 2022-12-13
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing methods for regenerating lithium battery cathode materials often damage the structure or use large amounts of toxic and expensive reagents, and lack environmentally friendly and efficient processes.
Method used
The LiCoO2 cathode material is stripped by spraying lithium salt solution and low-temperature calcination, combined with alkaline leaching and high-temperature sintering, which simplifies the process and reduces the use of reagents.
Benefits of technology
This technology enables efficient regeneration of LiCoO2 cathode materials without damaging their original morphology, simplifying the process, reducing reagent usage, and improving regeneration efficiency and environmental friendliness.
✦ Generated by Eureka AI based on patent content.
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Figure CN116344989B_ABST
Abstract
本发明涉及一种废旧锂电池正极材料剥离并直接再生的方法，属于锂电池正极技术领域。本发明机械拆解废旧锂电池正极得到含Al集流体的正极极片，在含Al集流体的正极极片表面喷涂锂盐溶液形成锂盐薄膜，烘干得到补锂正极极片；在空气氛围下，补锂正极极片进行低温焙烧，敲打物理分离得到废旧LiCoO2正极材料，废旧LiCoO2正极材料研磨过筛得到粉末A；将粉末A加入到NaOH溶液中碱浸除铝得到粉末B；将过量锂盐加入到粉末B中混合均匀，在空气氛围中高温烧结得到再生锂电池正极材料。相比较传统正极材料剥离的方式，低温补锂法高效的将正极材料与铝箔分离，所再生的LiCoO2正极材料满足工业化应用。
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