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:
Jun. 23, 2020
Filed:
Feb. 13, 2018
Farasis Energy (Ganzhou) Co., Ltd., Ganzhou, CN;
Hongjian Liu, Hercules, CA (US);
Keith D Kepler, Hercules, CA (US);
Robbert M. Vermeulen, Pleasant Hill, CA (US);
Floris Tsang, Walnut Creek, CA (US);
Phillip Hailey, Oakland, CA (US);
Michael Slater, Oakland, CA (US);
FARASIS ENERGY (GANZHOU) CO. LTD., Ganzhou, CN;
Abstract
A composite for the cathode of Li-ion battery is disclosed and comprises: a base active material represented by Li(NCoMn)Owherein 0≤a≤0.5, 0≤b≤0.4, 0≤c≤0.6, with b+c<1; and a coating on the base active material comprising a phase containing the components BOor SnBOF; wherein 0≤x≤5, 0<y<4+3x; wherein relative to the total amount of the base active material, the weight percentage of B element is not more than 2 wt %, the weight percentage of Sn element is not more than 5 wt %. A method for making a composite is disclosed and includes: mixing the base active material with the phase components and/or a precursor for the phase components; and firing the mixture obtained. The application provides a high capacity, long cycle life cathode material that is stabilized at high voltages.