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:
Aug. 04, 2015
Filed:
Nov. 03, 2008
George Blomgren, Lakewood, OH (US);
Dania Ghantous, Walnut Creek, CA (US);
On Chang, San Jose, CA (US);
Ou Mao, Pleasanton, CA (US);
Peter Hallac, Fremont, CA (US);
Syed Aziz, Milpitas, CA (US);
George Blomgren, Lakewood, OH (US);
Dania Ghantous, Walnut Creek, CA (US);
On Chang, San Jose, CA (US);
Ou Mao, Pleasanton, CA (US);
Peter Hallac, Fremont, CA (US);
Syed Aziz, Milpitas, CA (US);
BASVAH LLC, Menlo Park, CA (US);
Abstract
Positive electrodes for secondary batteries formed with a plurality of substantially aligned flakes within a coating. The flakes can be formed from metal oxide materials and have a number average longest dimension of greater than 60 μm. A variety of metal oxide or metal phosphate materials may be selected such as a group consisting of LiCoO, LiMnO, Li(M1M2Co)Owhere M1 and M2 are selected from among Li, Ni, Mn, Cr, Ti, Mg, or Al, 0≦x1≦0.5 and 0≦x2≦0.5, or alternatively, LiM1MnOwhere 0<x<0.8 and M1 represents one or more metal elements. Methods for making positive electrode materials are also provided involving the formation of structures with a desired longest dimension, preferably polycrystalline flakes. A cathode coating containing polycrystalline flakes may be deposited onto a conductive substrate and pressed to a desired final electrode thickness.