Low-voltage soft-state corrosion anode aluminum foil as well as preparation method and application thereof

• Main Authors: YANG HAILIANG, LIU JUNYING, RAN LIANG
• Format: Patent
• Language: Chinese; English
• Published: 05.11.2021
• Subjects: APPARATUS THEREFOR; 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 BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ELECTRICITY; ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROMOBJECTS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION

The invention discloses a low-voltage soft-state corrosion anode aluminum foil and a preparation method and application thereof. The preparation method of the low-voltage soft-state corrosion anode aluminum foil comprises the following steps: S1, electrochemical corrosion: performing electrifying corrosion in acid, and performing washing after corrosion is completed; S2, sheet burning treatment: forming an oxidation film on the surface of the aluminum foil; S3, intermediate treatment: passivating the aluminum foil in a passivation solution; S4, washing: washing the aluminum foil subjected to intermediate treatment with water; S5, repeating the steps S1 to S4 for 10-12 times; and S6, after chemical cleaning, performing water washing, and performing stabilizing treatment and drying treatment to obtain the low-voltage soft-state corrosion anode aluminum foil, wherein the chip burning temperature in the step S2 ranges from 200 DEG C to 400 DEG C, and the chip burning time ranges from 0.3 min to 1 min. The formati