Patent ID: 6391488
Filing Date: 2002-05-21
Classification: H01M,Y02E,Y02P

Abstract:
A non-aqueous electrolyte cell comprising an anode consisting essentially of a light metal, a cathode, a separator interposed between said anode and cathode, an organic electrolyte and a cell case containing said anode, cathode, separator and organic electrolyte; said anode, cathode and separator being spirally wound so that said anode is disposed on the outer side of said cathode to form an electrode assembly, wherein the outermost end of said cathode is wrapped with an electrically insulating material, wherein said anode has a section provided with an anode current collector proximate to the outermost end thereof, said section being positioned beyond the wrapped outermost end of said cathode in the winding direction of the spiral, and wherein a reaction suppressing layer is present between a cathode section proximate to the outermost end and the anode positioned on the inner side of said cathode section, whereby only the outer side of said cathode section substantially reacts with the anode.