ALUMINUM FOIL, ITS PRODUCTION METHOD, CHARGE COLLECTOR, SECONDARY BATTERY AND ELECTRIC DOUBLE LAYER CAPACITOR

PROBLEM TO BE SOLVED: To provide aluminum foil whose electrical properties or mechanical properties can be improved, and regions different in surface roughness can be provided in optional shape, and to provide its production method. SOLUTION: The aluminum foil is provided with: a first region subjec...

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Bibliographische Detailangaben
Hauptverfasser:	TADA HIROSHI, TAKANO TOSHINORI
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS CAPACITORS CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL ELECTRICITY GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25 NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide aluminum foil whose electrical properties or mechanical properties can be improved, and regions different in surface roughness can be provided in optional shape, and to provide its production method. SOLUTION: The aluminum foil is provided with: a first region subjected to etching treatment and having a relatively reduced surface roughness; and a second region subjected to etching treatment and having a relatively large surface roughness. A partial region on the surface of the aluminum foil is brought into contact with an acidic first liquid comprising hydrogen fluoride, and thereafter, the surface of the aluminum foil at least comprising the part is brought into contact with an acidic second liquid comprising hydrochloric acid, so that the aluminum foil is subjected to etching treatment. COPYRIGHT: (C)2005,JPO&NCIPI