| 摘要 |
A non-aqueous secondary battery-use separator comprising a porous film enclosing a net-form support and consisting of organic polymer that swells in an electrolyte to hold it, wherein the net-form support has an average film thickness of 10-30 mum, METSUKE of 6-20 g/m2, a Gurley value of up to 10 sec/100cc, a MacMillan number (25°C) of up to 10, and MacMillan number x film thickness (mum) of up to 200, the separator has an average film thickness of 10-35 mum, METSUKE of 10-25 g/m2, a Gurley value of up to 60 sec/100cc or between 60 sec/100 cc and 500 sec/100cc, and a specific relational expression is induced between an effective active material mass in the battery system and the over-charge prevention function characteristic value of the separator from an electrochemical point of view to make battery characteristics compatible with safety. |
