| 摘要 |
PROBLEM TO BE SOLVED: To provide a separator for a lithium secondary battery wherein battery characteristics such as a cycle property and a low-temperature property or the like, and provide a lithium secondary battery using it. SOLUTION: This is a separator for the battery, composed of a porous film having numerous penetrating minute holes, wherein the porous film contains basic inorganic fine particles which have average particle size of 0.1 to 8 μm and which have at least one kind of metal oxide selected from a group consisting of silica, alumina, magnesium oxide and zinc oxide as the main component, and this is the lithium secondary battery which uses the separator. |
