PURPOSE: To enlarge the internal space of a cell and reduce internal resistance and scheme to improve working performance in fabrication, by using a separator having cellophane formed in the microholes of microporous resin film.

CONSTITUTION: A separator 2 is arranged between an anode flux 1 and electrolyte absorbing body 3 consisting of vinylon and rayon mixed paper. This separator 2 is made by forming cellophane 6 in the microholes 5 of a microporous resin film 4 which can obstruct transfer of anode active particles. The microporous resin film 4 is a film made of resin such as polyethylene having a number of microholes formed, and the resin film 4 is impregnated with viscose, and cellophane 6 is formed in the microholes 5. Thus, the internal space of the cell can be enlarged, and internal resistance can be reduced, and the working performance in fabrication can be improved sharply.