Panasonic Intellectual Property Management Co., Ltd.

Panasonic Corporation

Masami Tsubaki

Mitsuhisa Yoshimura

Naomi Kurihara

Miwa Ogawa

Hiroshi Yoshida

Kazuo Fujiwara

Kazumitsu Honda

Hisao Nagara

Hayato Kato

Shosuke Nakano

Katsuyoshi Shingu

Tatsushi Ota

An electrode foil for an electrolytic capacitor includes an anode body having a porous portion and a core part continuous with the porous portion, a dielectric layer covering a surface of a metal skeleton forming the porous portion, wherein an interface layer including a first element is present between the metal skeleton and the dielectric layer, and the first element is at least one selected from the group consisting of sulfur, nitrogen, and phosphorus.

Electrode foil for electrolytic capacitors, electrolytic capacitor, method for producing electrode foil for electrolytic capacitors, and method for producing electrolytic capacitor

An electrode foil for an electrolytic capacitor including a metal porous portion, and a metal core portion continuous to the metal porous portion. When the metal porous portion is equally divided in three in a thickness direction of the metal porous portion into a first region, a second region, and a third region sequentially from the metal core portion side, the first region has a porosity P1, the second region has a porosity P2, and the third region has a porosity P3, satisfying P1<P2<P3.

Electrode foil for electrolytic capacitor, electrolytic capacitor, and methods for producing them

A fluid dispersion obtained by mixing oxide particles and water is sprayed to a raw aluminum foil from a direction opposite to a travelling direction of the raw aluminum foil while the raw aluminum foil is allowed to travel. In this way, a roll-pressed mark of the raw aluminum foil is eliminated, and thus aluminum foil for aluminum electrolytic capacitor electrode is produced. Pyramidal-shaped recesses each having an acute angle tip are present all over a surface of the aluminum foil.

Aluminum foil for aluminum electrolytic capacitor electrode and method for manufacturing the same

The electrolytic capacitor includes a capacitor element and an electrolyte solution with which the capacitor element is impregnated. The capacitor element is composed of a positive electrode made of a valve metal, an etched negative electrode containing copper, and a separator disposed therebetween. The electrolyte solution contains complex salt of an azole ring compound with copper ions.

Electrolytic capacitor

Growing community of inventors

Kyoto, Japan

Masami Tsubaki