PREPARATION METHOD OF A CYLINDRICAL SEPARATOR WITH IMPROVED DURABILITY

摘要

PURPOSE: A method for preparing a cylindrical separator is provided for improving the durability and stability of the separator and convenience of use. CONSTITUTION: A cylindrical separator is prepared by coating the surface of a cylindrical aluminum with a nonconducting material to form several oxidation separators having a small area, and oxidizing; coating the some area or the oxidation separators with the nonconducting material, and oxidizing. The portion(101) coated with a nonconducting material is not oxidized, the portion(102) which is not coated with a nonconducting material is oxidized to form porous oxidation separators, and a supporting portion(103) coated with a nonconducting material is not oxidized.