Method for producing positive electrode active material for sodium-ion secondary battery, method for producing raw material of positive electrode active material for sodium-ion secondary battery, and method for producing sodium-ion secondary battery
By processing lithium-ion secondary batteries to produce black powder and preparing positive electrode active materials for sodium-ion secondary batteries, the problem of difficult removal of impurity elements in lithium-ion secondary batteries has been solved, realizing the efficient recycling of lithium-ion secondary batteries and the efficient preparation of positive electrode active materials for sodium-ion secondary batteries.
CN122187154APending Publication Date: 2026-06-12GS YUASA INT LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GS YUASA INT LTD
- Filing Date
- 2025-12-08
- Publication Date
- 2026-06-12
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Figure CN122187154A_ABST
Abstract
The manufacturing method of the positive electrode active material for sodium-ion secondary batteries according to one aspect of the present application includes: a step of manufacturing black powder by processing a processed object, the processed object being a lithium-ion secondary battery having a positive electrode with a lithium-ion secondary battery positive electrode active material, or a module or a battery pack having the lithium-ion secondary battery, and having a component containing an iron element, the lithium-ion secondary battery positive electrode active material containing a transition metal element other than the iron element, the black powder containing the transition metal element and the iron element; and a step of manufacturing a sodium-ion secondary battery positive electrode active material containing the transition metal element and the iron element using the black powder as part of a raw material.
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