Separator for aluminum electrolytic capacitors, and aluminum electrolytic capacitor

Abstract

A separator for aluminum electrolytic capacitors, the separator being formed of natural cellulose fibers and beaten regenerated cellulose fibers, and having excellent tear strength, short-circuit resistance and impedance characteristics. The separator for aluminum electrolytic capacitors is interposed between a positive electrode and a negative electrode of an aluminum electrolytic capacitor, and is formed of from 50% by mass to 90% by mass of natural cellulose fibers and from 50% by mass to 10% by mass of beaten regenerated cellulose fibers. The separator for aluminum electrolytic capacitors is configured to have a specific tear strength of from 20 to 100 mN·m2/g and a short-circuit rate of 10% or less during application of 500 V in separator dielectric breakdown testing.

Dependencies are inferred from the claim text.