| abstract |
The present invention is a separator for secondary batteries comprising cellulose nanofibers, the separator has a microporous structure formed between the cellulose nanofibers, the porous structure has a porosity of 10 to 80% (v / v), the pore size It relates to a secondary battery separator and a method for manufacturing the same, the thickness of the separator is 0.01 to 10 ㎛, 5 to 30 ㎛, it is possible to manufacture a separator excellent in thermal stability, dimensional stability, wettability and electrochemical stability, the manufacturing process is simplified Can lower the production cost. |