Electrode Sheet for Capacitors, Method of Manufacturing the Same, and Electrolytic Capacitor

摘要

A method of manufacturing an electrode sheet for capacitors comprises the step of forming a sprayed layer of an Al-valve action metal alloy on at least one surface of an aluminum foil ( 2 ) by thermally spraying Al-valve action metal alloy powder on the surface of the aluminum foil. At the time of the spraying, a porosity content rate of the sprayed layer ( 3 ) is controlled to 20 vol % or less by melting at least a matrix Al phase of the alloy. The electrode sheet for capacitors manufactured by the method can decrease the porosity content rate of the sprayed layer, which in turn can secure less leakage current and larger capacitance.