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
View PDF 2 Cites 0 Cited by

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

Smart Images

  • Figure CN122187154A_ABST
    Figure CN122187154A_ABST
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

Citation Information

Patent Citations

  • Complex metal oxide, positive electrode active material for sodium secondary battery, positive electrode for sodium secondary battery, and the sodium secondary battery

    JP2012201588A

  • Process for preparing various metal hydroxides and oxides and their derivatives

    JP2021504885A