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:
Apr. 22, 2003
Filed:
Dec. 08, 2000
Danionics A/S, Odense S, DK;
Abstract
The invention relates to a rechargeable electrochemical cell comprising a negative electrode, an electrolyte and a positive electrode, characterized in that the positive electrode structure thereof comprises (a) one or more materials selected from the group consisting of LiMn O , LiCoO , LiNiO , LiNi Co O where 0<x<1, preferably LiMn O and (b) one or more materials selected from the group consisting of orthorhombic LiMnO , monoclinic LiMnO (m-LiMnO ), hexagonal LiFeO (h-LiFeO ), &agr;-NaMnO , &bgr;-NaMnO , &agr;-NaFeO , and lithium/sodium compounds of the formula Li Na M(II)O , where x≧0, y≧0 and x+y≦2, and where M(II) is a transition metal in oxidation state +2, selected from the group consisting of Mn, Co, Ni and Fe, preferably Li Na Mn(II)O , where x≧0, y≧0 and x+y≦2, more preferably LiNa MnO , the material(s) of group (a) being present in the electrode structure in an amount corresponding to 20-98% by weight of the complete electrode structure, and the material(s) of group (b) being present in the electrode structure in an amount corresponding to 1-79% by weight of the complete electrode stucture.