Manufacturing method of electrode foil for surface-mounting aluminum electrolytic capacitor
An aluminum electrolytic capacitor, surface mount technology, applied in the direction of electrolytic capacitors, capacitors, circuits, etc., can solve the problems of large leakage current, capacity dispersion, and bending dispersion of the formed foil, so as to meet the requirements of use and improve the use of life and the effect of reducing leakage current
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[0018] Example 1:
[0019] A 91μm-thick aluminum foil with a purity of 99.98% was soaked in a 0.5% phosphoric acid solution for 1 min, and then the current density was 1A / cm 2 The instantaneous high-frequency current is carried out surface electrolysis treatment, and the reaction temperature is 50 ° C; the above-mentioned pre-treated aluminum foil is placed in the mixed aqueous solution to carry out a power-on corrosion, the power-on frequency is 80 Hz, the reaction temperature is 20 ° C, and the reaction time is 1min: Then placed in the mixed aqueous solution for chemical corrosion, the reaction temperature was 40°C, and the reaction time was 30s; then it was placed in the mixed aqueous solution for secondary electrification corrosion, the electrification frequency was 70Hz, the reaction temperature was 20°C, and the reaction time was 2min30s; Then placed in the mixed aqueous solution for three times of electrification corrosion, the electrification frequency was 60Hz, the re...
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[0020] Example 2: A 91μm-thick aluminum foil with a purity of 99.98% was soaked in a 0.7% phosphoric acid solution for 1min, and then the current density was 1.5A / cm 2 The instantaneous high-frequency current is carried out surface electrolysis treatment, and the reaction temperature is 40 ° C; the above-mentioned pre-treated aluminum foil is placed in the mixed aqueous solution to carry out a power-on corrosion, the power-on frequency is 70 Hz, the reaction temperature is 30 ° C, and the reaction time is 1min: Then placed in the mixed aqueous solution for chemical corrosion, the reaction temperature was 50 °C, and the reaction time was 30s; then it was placed in the mixed aqueous solution for secondary electrification corrosion, the electrification frequency was 60Hz, the reaction temperature was 30 °C, and the reaction time was 2min30s; Then placed in the mixed aqueous solution for three times of electrification corrosion, the electrification frequency was 50Hz, the reaction ...
Example Embodiment
[0021] Example 3: A 91μm-thick aluminum foil with a purity of 99.98% was soaked in a 1% phosphoric acid solution for 1min, and then the current density was 1A / cm 2 The instantaneous high-frequency current is carried out surface electrolysis treatment, and the reaction temperature is 30 ° C; the above-mentioned pre-treated aluminum foil is placed in the mixed aqueous solution to carry out a power-on corrosion, the power-on frequency is 60 Hz, the reaction temperature is 40 ° C, and the reaction time is 1min: Then put it in the mixed aqueous solution for chemical corrosion, the reaction temperature is 60 °C, and the reaction time is 30s; then it is placed in the mixed aqueous solution for secondary electrification corrosion, the electrification frequency is 50Hz, the reaction temperature is 40 °C, and the reaction time is 2min30s; Then placed in the mixed aqueous solution for three times of electrification corrosion, the electrification frequency was 40Hz, the reaction temperatur...
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