| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous secondary battery that has superior safety and excellent load characteristics. <P>SOLUTION: The nonaqueous secondary battery having an electrical quantity of 5 Ah or greater has two separators between a positive electrode and a negative electrode which face each other. One of the two separators is a laminate type separator which includes a porous layer (I) composed a finely porous film made principally of thermoplastic resin, and a porous layer (II) mainly containing an inorganic filler with 150°C or greater in heat-resistant temperature, with a porosity being 50 to 90%. The other one of the two separators is a separator made of resin which is not molten at 180°C or less and formed of nonwoven fabric having a basis weight of 5-10 g/m<SP POS="POST">2</SP>, with the porosity being 50-90%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
