SEPARATOR FOR ELECTRIC DOUBLE-LAYER CAPACITOR AND THE ELECTRIC DOUBLE-LAYER CAPACITOR

摘要

PROBLEM TO BE SOLVED: To provide a separator for an electric double-layer capacitor in which short-circuit is hard to be generated and internal resistance can be reduced, and to provide the electric double-layer capacitor which uses the separator. SOLUTION: The separator for an electric double-layer capacitor consists of a fiber sheet containing two or more fiber layers which contain synthetic fiber having fibril and a fiber whose fineness is at most 0.45 dtex. At least two layers from among the fiber layers are fiber layers of different apparent densities.