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. 30, 2015
Filed:
Jan. 23, 2013
Envia Systems, Inc., Newark, CA (US);
Sanjeev Sharma, Fremont, CA (US);
Subramanian Venkatachalam, Pleasanton, CA (US);
Yogesh Kumar Anguchamy, Newark, CA (US);
Herman A. Lopez, Sunnyvale, CA (US);
Sujeet Kumar, Newark, CA (US);
Envia Systems, Inc., Newark, CA (US);
Abstract
Mixed phase complex lithium metal oxides are described with an overall stoichiometry represented by a formula LiNiCoMnO, −0.05≦a≦0.14, 0.1≦b≦0.25, 0≦c≦0.2, 0.45≦d≦0.8, a+b+c+d=1 and (1+a)/(b+c+d)≦1.325. The compositions are generally very high in manganese content. The compositions can have x-ray diffractograms and differential capacity profiles suggesting the presence of a layered (LiMnO)—layered (LiMetalO)—spinel crystal structure. The compositions can exhibit surprisingly low first cycle irreversible capacity losses while maintaining high specific discharge capacities, even at high discharge rates. Stabilizing coatings have been found to further significantly improve performance.