Patent ID: 6656635
Filing Date: 2003-12-02
Classification: H01M,Y02E

Abstract:
A non-aqueous electrolyte secondary cell comprising:a cathode having a layer of a cathode active material containing a compound represented by the general formula LixFe1-yMyPO4, where M is at least one selected from the group consisting of Mn, Cr, Co, Cu, Ni, V, Mo, Ti, Zn, Al, Ga, Mg, B and Nb, with 0.05&lE;x&lE;1.2 and 0&lE;y&lE;0.8; an anode having a layer of an anode active material containing an anode active material; and a non-aqueous electrolyte; wherein, said layer of the cathode active material has a film thickness in a range from 25 to 110 &mgr;m, and said layer of the cathode active material is formed on each surface of the cathode current collector and wherein the sum of film thicknesses of the layers of the cathode active material formed on opposite surfaces of said cathode ranges between 50 and 220 &mgr;m.