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:
Mar. 20, 2012
Filed:
Mar. 28, 2008
Tsutomu Ohzuku, Nara, JP;
Hiroshi Yoshizawa, Osaka, JP;
Kensuke Nakura, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Public University Corporation Osaka City University, Osaka, JP;
Abstract
An active material for a non-aqueous electrolyte secondary battery including a lithium-containing transition metal oxide containing nickel and manganese and having a closest-packed structure of oxygen, wherein an atomic ratio M/Mbetween the number of moles of lithium Mand the number of moles of transition metal Mcontained in the lithium-containing transition metal oxide is greater than 1.0; the lithium-containing transition metal oxide has a crystal structure attributed to a hexagonal system, and the X-ray diffraction image of the crystal structure has a peak Pattributed to the (003) plane and a peak Pattributed to the (104) plane; an integrated intensity ratio I/Ibetween the peak Pand the peak Pvaries reversibly within a range from 0.7 to 1.5 in association with absorption and desorption of lithium by the lithium-containing transition metal oxide; and the integrated intensity ratio varies linearly and continuously.