Preparation method of lithium nickel cobalt aluminate material
By adding lithium source and surface coating technology in step by step, the problems of insufficient stability and poor circulation performance of nickel-cobalt lithium aluminate materials in the high-nickel synthesis process are solved, and the stability and circulation performance of the material are improved.
CN120089692APending Publication Date: 2025-06-03DONGGUAN DONGYANG SOLAR SCI RES & DEV CO LTD
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Patent Information
- Application Number
- CN202311635087.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-30
- Publication Date
- 2025-06-03
AI Technical Summary
Technical Problem
Nickel-cobalt lithium aluminate materials have problems such as insufficient stability, poor circulation performance and fast capacity attenuation during high-nickel synthesis.
Method used
Sintering is performed by adding lithium sources in step by step to reduce the content of alkaline substances, and surface coating is carried out by coating agents such as boric acid or alumina to improve the conductivity and structural stability of the material.
Benefits of technology
It improves the stability and circulation performance of nickel-cobalt lithium aluminate materials, delays capacity attenuation, and is suitable for the preparation of high-nickel-nickel-cobalt lithium aluminate materials.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a preparation method of a nickel cobalt lithium aluminate material, which comprises the following steps: mixing a ternary precursor with a first lithium source, and carrying out first sintering to obtain a first lithiation product; and coating the first lithiation product, mixing the coated first lithiation product with a second lithium source, and carrying out second sintering to prepare the nickel cobalt lithium aluminate material. By applying the preparation method, the stability and long cycle performance of the nickel cobalt lithium aluminate material can be improved, and the preparation method also has the advantages of easiness in implementation and large-scale preparation, and has a good application prospect.
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