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:
Jul. 05, 2016
Filed:
Aug. 21, 2012
Leif Christensen, St. Paul, MN (US);
Jerome E. Scanlan, St. Paul, MN (US);
Anthony P. Lindert, Oshkosh, WI (US);
Leif Christensen, St. Paul, MN (US);
Jerome E. Scanlan, St. Paul, MN (US);
Anthony P. Lindert, Oshkosh, WI (US);
3M INNOVATIVE PROPERTIES COMPANY, St. Paul, MI (US);
Abstract
Positive electrode for lithium-ion electrochemical cells are provided that have capacity retentions of greater than about 95% after 50 charge-discharge cycles when comparing the capacity after cycle 52 with the capacity after cycle 2 when cycled between 2.5 V and 4.7 V vs. Li/Liat 30° C. Compositions useful in the provided positive electrodes can have the formula, Li(NiMnCo)O, wherein 0.05≦x≦0.10, a+b+c=1, 0.6≦b/a≦1.1, c/(a+b)<0.25, and a, b, and c are all greater than zero. The process of making these positive electrodes includes firing the compositions at 850° C. to 925° C.