Non-aqueous electrolyte secondary cell

Details Non-aqueous electrolyte secondary cell Non-aqueous electrolyte secondary cell

H - Electricity

01

M

H01M 4/58 (2006.01) H01M 10/36 (2006.01) H01M 10/40 (2006.01) H01M 6/10 (2006.01)

Patent

CA 2358256

A non-aqueous electrolyte secondary cell containing a compound of an olivinic structure as a cathode active material is to be improved in load characteristics and cell capacity. To this end, there is provided a non-aqueous electrolyse secondary cell including a cathode having a layer of a cathode active material containing a compound represented by the general formula Li x Fe 1-y M y PO4, 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 <= x <= 1.2 and 0 <= y <= 0.8, an anode having a layer of a cathode active material containing the anode active material and a non-aqueous electrolyte, wherein the layer of the cathode active material has a film thickness in a range from 25 to 110 µm. If a layer of a cathode active material is provided on each surface of a cathode current collector, the sum of the film thicknesses of the layers of the cathode active material ranges between 50 and 220 µm. The non-aqueous electrolyte may be a liquid-based electrolyte or a polymer electrolyte.

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