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:
Dec. 01, 2020
Filed:
Jan. 18, 2019
Lg Chem, Ltd., Seoul, KR;
Sang Wook Lee, Daejeon, KR;
Wang Mo Jung, Daejeon, KR;
Seong Hoon Kang, Daejeon, KR;
Byung Chun Park, Daejeon, KR;
Ju Kyung Shin, Daejeon, KR;
Sang Min Park, Daejeon, KR;
Abstract
The present invention provides a method of preparing a positive electrode active material for a secondary battery including preparing a first transition metal-containing solution including a nickel raw material, a cobalt raw material, and a manganese raw material and a second transition metal-containing solution including a nickel raw material, a cobalt raw material, and a manganese raw material in a concentration different from that of the first transition metal-containing solution; preparing a reaction solution, in which nickel manganese cobalt-based composite metal hydroxide particles are formed, by adding an ammonium cation-containing complexing agent and a basic compound as well as the second transition metal-containing solution to the first transition metal-containing solution and performing a co-precipitation reaction in a pH range of 11 to 13.