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:
Sep. 20, 2011
Filed:
Mar. 20, 2007
Mitsuharu Tabuchi, Ikeda, JP;
Yoko Nabeshima, Ikeda, JP;
Kazuaki Ado, Ikeda, JP;
Kuniaki Tatsumi, Ikeda, JP;
Tomonari Takeuchi, Ikeda, JP;
Mitsuharu Tabuchi, Ikeda, JP;
Yoko Nabeshima, Ikeda, JP;
Kazuaki Ado, Ikeda, JP;
Kuniaki Tatsumi, Ikeda, JP;
Tomonari Takeuchi, Ikeda, JP;
Abstract
The present invention provides a lithium manganese-based composite oxide represented by the compositional formula: Li(MnFeTi)O, wherein 0<x<⅓, 0≦m≦0.75, 0.01≦n≦0.75, and 0.01≦m+n<1, and comprising a crystal phase of layered rock-salt type structure. The composite oxide is capable of maintaining an average discharge voltage of 3 V or more over long charge/discharge cycles. The composite oxide can be prepared using lower-cost starting materials, and exhibits improved charge/discharge characteristics over conventional low-cost positive electrode materials.