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:
Apr. 03, 2018
Filed:
Dec. 06, 2012
SK Innovation Co., Ltd., Seoul, KR;
Jung In Yeon, Daejeon, KR;
Kook Hyun Han, Daejeon, KR;
Min Gu Kang, Seoul, KR;
Seong Ho Lee, Seoul, KR;
SK Innovation Co., Ltd., Seoul, KR;
Abstract
Provided is a method for manufacturing a cathode active material for a lithium secondary battery, the method including heat-treating a precursor aqueous solution containing a lithium precursor, a transition metal precursor, and an organic acid containing a carboxyl group, and having a chelation index (C.I) value less than 1 and 0.5 or more, wherein the chelation index value is defined by transmittance of a peak located in a wavenumber from 1,700 to 1,710 cmand transmittance of a peak located in a wavenumber from 1,550 to 1,610 cmin Fourier transform infrared (FTIR) spectroscopy spectrum.