| 摘要 |
PROBLEM TO BE SOLVED: To provide a separator for an electricity accumulation device having high heat resistance and useful for capacitor application, condenser application and a lithium ion battery application. SOLUTION: In this separator for the electricity accumulation device made of a cellulose polymer, film thickness is 1-30μm, porosity is 20-90%, maximum hole size is 2μm or less, and apparent activation energy (-ΔG) with respect to ion conduction is positive in a temperature range of 120-180°C. COPYRIGHT: (C)2007,JPO&INPIT |
