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. 11, 1997
Filed:
May. 11, 1995
Masaki Hasegawa, Hirakata, JP;
Yasuhiko Bito, Osaka Prefecture, JP;
Shuji Ito, Akashi, JP;
Toshihide Murata, Izumiotsu, JP;
Yoshinori Toyoguchi, Yao, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A positive electrode for a non-aqueous electrolyte lithium secondary battery comprises an active material represented by the formula Li.sub.x A.sub.1-y M.sub.y O.sub.2 (wherein A represents at least one transition element selected from the group consisting of Mn, Co, and Ni, M represents at least one element selected from the group consisting of B, Mg, Ca, Sr, Ba, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Al, In, Nb, Mo, W, Y, and Rh, and wherein 0.05.ltoreq.x.ltoreq.1.1, and 0.ltoreq.y.ltoreq.0.5), a binder, a conductive agent and a current collector. The binder is selected from the group consisting of a copolymer comprising a tetrafluoroethylene unit and a hexafluoropropylene unit, a copolymer comprising a vinylidene fluoride unit, a copolymer comprising a propylene unit and a tetrafluoroethylene unit, and a polymer comprising a trifluoropropylmethylsiloxane unit.