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. 01, 2024
Filed:
May. 13, 2020
Korea Electrotechnology Research Institute, Gyeongsangnam-do, KR;
University-industry Cooperation Group of Kyung Hee University, Gyeonggi-do, KR;
Sang Min Lee, Gyeongsangnam-do, KR;
Min-Sik Park, Gyeonggi-do, KR;
Chul Ho Lee, Gyeongsangnam-do, KR;
Jeong Hee Choi, Busan, KR;
KOREA ELECTROTECHNOLOGY RESEARCH INSTITUTE, Gyeongsangnam-Do, KR;
UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY, Gyeonggi-Do, KR;
Abstract
The present invention provides a method for preparing an anode active material for a nonaqueous lithium secondary battery, comprising the steps of: preparing a carbon-based material; forming a precursor coating layer comprising Me and A (wherein A is O or S) on the surface of the carbon-based material; supplying a P precursor to the precursor coating layer of the carbon-based material; and converting at least a part of the precursor coating layer into a compound represented by MeP(wherein x1>0 and y1>0) by the reaction of the precursor coating layer and the P precursor, thereby forming a phosphide coating layer, wherein Me is at least one type of the same metal element selected from among Mo, Ni, Fe, Co, Ti, V, Cr, Nb and Mn.