SEPARATOR FOR ELECTRIC DOUBLE LAYER CAPACITORS, AND ELECTRIC DOUBLE LAYER CAPACITOR

摘要

Provided are: a separator for electric double layer capacitor, having a gas permeability and small thickness while maintaining strength property, and an electric double layer capacitor having the same separator. The separator for electric double layer capacitor includes a fiber sheet formed by blending 10% by mass or more (relative to total mass of fiber sheet) of polyvinyl alcohol fibers having a hot water-dissolving temperature of lower than 100°C and higher than 85°C, and has a density within a range of 0.25 to 0.7g/cm 3 , and a thickness of not less than 5 µm and less than 40µm.