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. 24, 2017
Filed:
Jun. 13, 2014
Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;
Hyun A Song, Gyeonggi-do, KR;
Dong Gyu Chang, Daejeon, KR;
Jong Min Kim, Daejeon, KR;
Jae Seung Shin, Gyeongsangbuk-do, KR;
Samsung SDI Co., Ltd., Yongin-Si, Gyeonggi-do, KR;
Abstract
Disclosed is a method for manufacturing lithium metal phosphate (LMP) having, as a precursor, crystalline iron phosphate salt having a (meta)strengite structure or metal-doped crystalline iron phosphate salt having a (meta)strengite structure, the method comprising the steps of: mixing a lithium raw material with crystalline iron phosphate salt in a slurry phase or a cake phase; and heat-treating the mixture. The method, by mixing a lithium (Li) raw material and a carbon (C) coating material with crystalline iron phosphate salt in a slurry phase or a cake phase, allows elements such as Li, Fe, P and C to be homogeneously mixed, and then, by having the elements dried simultaneously, enables manufacturing of high-quality LMP. Therefore, the present invention is not only capable of providing convenience during the manufacturing process for lithium metal phosphate, but also capable of providing a lithium secondary battery positive electrode active material having excellent battery characteristics.