| abstract |
Disclosed is a separator for electric double layer capacitors which is composed of a porous sheet containing a fibrillated heat-resistant fiber, a polyester fiber having a fineness of not less than 0.01 dtex and less than 0.10 dtex, and a fibrillated cellulose. The separator for electric double layer capacitors is suitable for an electric double layer capacitor which operates at a high voltage of not less than 3 V. |