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, 2019
Filed:
Oct. 29, 2014
Korea Electronics Technology Institute, Seongnam-si, Gyeonggi-do, KR;
Junho Song, Seongnam-si, KR;
Youngjun Kim, Seongnam-si, KR;
Jeomsoo Kim, Hwaseong-si, KR;
Woosuk Cho, Seongnam-si, KR;
Sanggil Woo, Yongin-si, KR;
Taeeun Yim, Seoul, KR;
Kyungjun Lee, Seoul, KR;
Yeonggwang Park, Incheon, KR;
KOREA ELECTRONICS TECHNOLOGY INSTITUTE, Seongnam-si, Gyeonggi-Do, KR;
Abstract
The present invention relates to a non-aqueous cathode material for lithium secondary batteries using a spherical transition metal complex carbonate, and a method for preparing same. According to the present invention, since the surface of a spherical transition metal complex carbonate, which is prepared by using a cobalt material, nickel material, manganese material, carboxyl group material, and ammonia material, is coated with titanium dioxide. In addition, by mixing the prepared, surface-coated transition metal complex carbonate with a lithium material and heat-treating the resultant material, it is possible to prepare a spherical Li-rich cathode material having a primary particle size of 200 nm or more, and a 0.1 C capacity of 250 mAh/g or more, and capable of implementing 96% or more of the initial capacity in a full cell after charging and discharging 60 times.