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:
Jun. 25, 2024
Filed:
Sep. 02, 2020
Liyuan (Shenzhen) Scientific Research Co., Ltd., Guangdong, CN;
Haifeng Yue, Guangdong, CN;
Xueqin He, Guangdong, CN;
Youyuan Huang, Guangdong, CN;
Caide Yang, Guangdong, CN;
Shunyi Yang, Guangdong, CN;
Xiaobing Xi, Guangdong, CN;
LIYUAN (SHENZHEN) SCIENTIFIC RESEARCH CO., LTD., Guangdong, CN;
Abstract
A method for recycling waste lithium iron phosphate is by selective oxidation-reduction, to obtain recycled lithium iron phosphate, and a lithium ion battery. The method includes: primarily sintering waste lithium iron phosphate under a condition where a mild oxidizing gas is introduced; separating a lithium iron phosphate powder material; supplementing lithium and supplementing carbon to the lithium iron phosphate powder material and regulating the composition of the lithium iron phosphate powder material using a lithium source and a carbon source by secondary sintering to obtain recycled lithium iron phosphate, wherein the mild oxidizing gas is water vapor, CO2 gas, or a mixed gas thereof.