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:
May. 11, 2010
Filed:
Nov. 13, 2007
Mitsuharu Tabuchi, Ikeda, JP;
Yuko Oka, Ikeda, JP;
Tomonari Takeuchi, Ikeda, JP;
Kuniaki Tatsumi, Ikeda, JP;
Mitsuharu Tabuchi, Ikeda, JP;
Yuko Oka, Ikeda, JP;
Tomonari Takeuchi, Ikeda, JP;
Kuniaki Tatsumi, Ikeda, JP;
Abstract
The invention provides a lithium-manganese-based composite oxide containing Ti and Ni, which is represented by the compositional formula: Li(MnNiTi)O, wherein 0<x≦0.33, 0.05<m<0.3, and 0.3<n<0.5, and includes a crystal phase of layered rock-salt type structure. The composite oxide is a novel material that is capable of maintaining an average discharge voltage of 3 V or more over long charge/discharge cycles, while providing a discharge capacity equal to or higher than those of lithium-cobalt-oxide-based positive electrode materials, and that can be prepared using starting materials that are inexpensive and less limited as natural resources, while exhibiting improved charge/discharge characteristics over known low-cost positive electrode materials.