ELECTRODE FOIL FOR ELECTROLYTIC CAPACITOR AND ELECTROLYTIC CAPACITOR

To provide an electrode foil for an electrolytic capacitor and an electrolytic capacitor having a high capacitance per unit volume.SOLUTION: An electrode foil 10 for an electrolytic capacitor extends in the longitudinal direction and has a width direction orthogonal to the longitudinal direction. Th...

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Bibliographische Detailangaben
Hauptverfasser:	OTSUKA MASAYA, KUBO YOJI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE ELECTRICITY
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Beschreibung
Zusammenfassung:	To provide an electrode foil for an electrolytic capacitor and an electrolytic capacitor having a high capacitance per unit volume.SOLUTION: An electrode foil 10 for an electrolytic capacitor extends in the longitudinal direction and has a width direction orthogonal to the longitudinal direction. The electrode foil includes an enlarged surface portion 14 on the surface of the electrode foil. A crack C is formed in the enlarged surface portion in a direction diagonal to the width direction. The cracks include a plurality of cracks intersecting each other and are formed in a V shape, and a dielectric film is further formed on the enlarged surface portion including the cracked region.SELECTED DRAWING: Figure 1 【課題】単位体積あたりの静電容量の高い電解コンデンサ用の電極箔および電解コンデンサを提供する。【解決手段】電解コンデンサ用の電極箔１０は、長手方向に延在する電極箔であり、かつ、長手方向に直交する幅方向を有する。電極箔は、電極箔の表面に拡面部１４を備える。拡面部には、幅方向に対して斜めの方向に割れＣが形成されている。割れは、互いに交差する複数の割れを含み、Ｖ字状に形成されており、割れの領域を含む拡面部に更に誘電体皮膜が形成されている。【選択図】図１