Patent ID: 7507502
Filing Date: 2009-03-24
Classification: C25D,H01M,Y02E,Y02P

Abstract:
1. A non-aqueous secondary battery comprising: a positive electrode; a non-aqueous electrolyte; and a negative electrode comprising a collector, an intermetallic compound as an active material layer that occludes/desorbs lithium, and a conductive layer on the collector, wherein a conductive layer is disposed between the active material layer and the collector, contains at least one kind of element selected from Ti, Ni, Zr, W and Ag, and has a thickness of 0.05 to 0.5 μm, and wherein the intermetallic compound is a single phase and contains at least one kind of element A selected from Sn, In, Ge, Ga, Pb, Al, Sb, and Si, and an element X that does not substantially react with Li, wherein X is at least one kind of element selected from Cu, Ni, Fe, Mn, Co, Cr, Mo, W, Ti, and Zr, and wherein in X-ray diffraction measurement with a CuKα-ray of the active material layer, highest peak intensities of diffraction lines derived from the intermetallic compound and the element A are represented by I