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. 22, 2019
Filed:
Apr. 26, 2005
Applicants:
Yang Kook Sun, Seoul, KR;
Myung Hoon Kim, Jeonrabukdo, KR;
Shin Ho Suk, Seoul, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 10/42 (2006.01); C01G 53/00 (2006.01); H01M 4/583 (2010.01); H01M 10/052 (2010.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); C01G 53/42 (2013.01); C01G 53/50 (2013.01); H01M 4/0471 (2013.01); H01M 4/0497 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 4/58 (2013.01); H01M 4/5805 (2013.01); H01M 10/4235 (2013.01); C01P 2002/50 (2013.01); C01P 2002/72 (2013.01); C01P 2002/74 (2013.01); C01P 2002/88 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2006/40 (2013.01); H01M 4/582 (2013.01); H01M 4/583 (2013.01); H01M 10/052 (2013.01);
Abstract
Disclosed herein are double-layer cathode active materials comprising a nickel-based cathode active material as an inner layer material and a transition metal mixture-based cathode active material as an outer layer material facing an electrolyte. Since the nickel-based cathode active material as an inner layer material has high-capacity characteristics and the transition metal mixture-based cathode active material as an outer layer material facing an electrolyte has superior thermal safety, the double-layer cathode active materials have high capacity, high charge density, improved cycle characteristics and superior thermal safety.