The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 06, 2026
Filed:
Sep. 26, 2022
Shenzhen Dynanonic Co., Ltd., Shenzhen, CN;
Foshan Dynanonic Technology Co., Ltd., Foshan, CN;
Rongyi Xu, Shenzhen, CN;
Yi Yang, Shenzhen, CN;
Lingyong Kong, Shenzhen, CN;
Yineng Li, Shenzhen, CN;
Qifeng Liu, Shenzhen, CN;
SHENZHEN DYNANONIC CO., LTD., Shenzhen, CN;
FOSHAN DYNANONIC TECHNOLOGY CO., LTD., Foshan, CN;
Abstract
The present application belongs to battery materials, and in particular, to a lithium-containing multi-phosphate cathode material and a preparation method therefor, and a secondary battery. The lithium-containing multi-phosphate cathode material includes a single-core multi-shell lithium manganese iron phosphate composite material, the composite material includes a core of lithium iron phosphate or lithium manganese iron phosphate, N lithium manganese iron phosphate coating layers coated on an outer surface of the core, and a carbon coating layer coated on an outermost layer of the composite material; N is an integer greater than or equal to 1; a manganese content in the N lithium manganese iron phosphate coating layers successively increases in a radially outward direction, and a particle size of the lithium manganese iron phosphate particles in the N lithium manganese iron phosphate coating layers successively decreases in the radially outward direction.