Patent ID: 6991873
Filing Date: 2006-01-31
Classification: H01M,Y02E,Y02P

Abstract:
1. A non-aqueous electrolyte cell comprising: a cell device including a strip-shaped cathode material and a strip-shaped anode material, which are layered with a separator therebetween and coiled only around itself a plural number of times; a non-aqueous electrolyte solution; and a cylindrically-shaped cell can for accommodating the cell device and the non-aqueous electrolyte solution, wherein, said cathode material employs a cathode active material containing a compound of an olivinic structure represented by a general formula Li said non-aqueous electrolyte cell device is a coiled tubular structure with an unrestrained inner diameter d and an outer diameter D subject to the following relationship: 0.05<d/D<0.5.