| 摘要 |
PROBLEM TO BE SOLVED: To provide a non-aqueous electrolytic solution secondary battery whose current load property is improved, in a large capacity type non-aqueous electrolytic solution secondary battery. SOLUTION: This non-aqueous electrolytic solution secondary battery has a structure, composed by producing spirally rolled layered electrode body 4 by rolling a sheet-like cathode 1 equipped with a cathode lead 1a and a sheet- like anode 2 equipped with an anode lead 2a, while sandwiching a separator 3 of a finely porous polypropylene film with, for example, 25μm thickness between them and housing the layered electrode body 4 in the inside of a battery can 6 through an insulator 5. At least one of the cathode 1 and the anode 2 is made to have a uneven part A by a method, such as Ar(argon) etching. |
