Preparation method of Al2O3-TiO2 composite membrane

A technology of al2o3-tio2, 1.al2o3-tio2, applied in the field of composite film, can solve the complex problems of corroding the surface of aluminum foil, and achieve the effects of avoiding phase transition and embrittlement, enhancing bonding force and simple equipment

Active Publication Date: 2010-11-03
GUANGDONG HUAFENG NEW ENERGY TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The second problem is that the surface of the corroded aluminum foil has a complex pore structure. In order to apply the oxide

Method used

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  • Preparation method of Al2O3-TiO2 composite membrane
  • Preparation method of Al2O3-TiO2 composite membrane
  • Preparation method of Al2O3-TiO2 composite membrane

Examples

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Example Embodiment

[0039] Example 1: Add 30ml of acetone to a dry Erlenmeyer flask, then add 3 grains of I 2 (About 0.075g), then add 1.0ml of water three times and stir for more than 40 minutes. Then add 150ml of isopropanol, continue to stir for 30min, then add 0.541g of nano rutile TiO 2 powder. After stirring uniformly, 5ml polyethylene glycol was added, followed by stirring for more than 24 hours to make it evenly dispersed, and finally ultrasonic power of 99W for 20 minutes to obtain a stable electrophoretic suspension. Electrophoretic deposition was performed under 12V voltage, and the deposition time was 8 minutes. After the foil is naturally dried at room temperature, it is heat-treated at 500°C for 10 min.

[0040] Use corrosion foil for low-voltage aluminum electrolytic capacitors (apparent thickness 100μm), and manually cut into 50mm×10mm samples with shank, and chemically treat them in 150g / L ammonium adipate solution. The corroded foil is chemically processed under the same conditio...

Example Embodiment

[0041] Example 2: Add 30ml of acetone to a dry Erlenmeyer flask, and then add 5 grains of I 2 (About 0.125g), then add 1.0ml of water three times and stir for more than 40 minutes. Then add 140ml of isopropanol, continue to stir for 30min and then add 0.0540g of nano rutile TiO 2 powder. After stirring uniformly, 4ml polyethylene glycol was added, followed by stirring for more than 24 hours to make the dispersion uniform, and finally ultrasonic power of 99W for 20 minutes to obtain a stable electrophoretic suspension. Electrophoretic deposition was performed under 18V voltage, and the deposition time was 3min. After the foil is naturally dried at room temperature, it is heat-treated at 500°C for 10 min.

[0042] Use corrosion foil for low-voltage aluminum electrolytic capacitors (apparent thickness 100μm), and manually cut into 50mm×10mm samples with shank, and chemically treat them in 150g / L ammonium adipate solution. The corroded foil is chemically processed under the same co...

Example Embodiment

[0043] Example 3: Add 30ml of acetone to a dry Erlenmeyer flask, then add 3 grains of I 2 (About 0.075g), add 5.0ml of water three times, and stir for more than 40 minutes. Then add 150ml of isopropanol, continue to stir for 30min, then add 0.0469g of nano rutile TiO 2 powder. After stirring uniformly, 2ml polyethylene glycol was added, followed by stirring for more than 24 hours to make the dispersion uniform, and finally ultrasonic power of 99W for 20 minutes to obtain a stable electrophoretic suspension. Electrophoretic deposition was carried out at 26V, and the deposition time was 4 minutes. After the foil is naturally dried at room temperature, it is heat-treated at 500°C for 10 min.

[0044] Use corrosion foil for low-voltage aluminum electrolytic capacitors (apparent thickness 100μm), and manually cut into 50mm×10mm samples with shank, and chemically treat them in 150g / L ammonium adipate solution. The corroded foil is chemically processed under the same conditions. The ...

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Abstract

The invention discloses a preparation method of an Al2O3-TiO2 composite membrane, relating to a composite membrane and providing a preparation method of an Al2O3-TiO2 composite membrane with a high dielectric constant. The preparation method comprises the steps of: sequentially adding acetone, iodine, water in three times and alcohol into a container, stirring, then adding nanoscale rutile TiO2 powder, uniformly stirring and then adding polyethylene glycol, stirring till even dispersing, and carrying out ultrasound treatment to obtain a TiO2 suspending liquid as an electrophoresis sediment liquid; depositing at 12-26V by adopting a double electrode electrolytic bath and using a stainless steel as a counter electrode (anode) and corrosion foil as a working electrode (cathode), carrying out thermal treatment after the foil is dried, and forming an Al2O3-TiO2 thin film on the corrosion foil to obtain a composite aluminum foil; and placing the composite aluminum foil into a weak acid or ammonium salt solution, after anodizing and thermal treatment in the presence of water bath, placing the composite aluminum foil into the weak acid or ammonium salt solution again for anodizing to obtain the Al2O3-TiO2 composite membrane.

Description

technical field [0001] The invention relates to a composite film, in particular to a manufacturing technology of high specific capacity anode aluminum electrode foil for low-voltage aluminum electrolytic capacitors. Background technique [0002] Aluminum electrolytic capacitors are famous for their large capacitance per unit volume, small size, light weight and low price. They are widely used in various electronic circuits for low-frequency filtering, audio coupling, DC blocking, and energy storage. They are widely used and difficult to One of the replaced electronic components. In recent years, with the rapid development of the international information industry, the update of monitors, power supplies, motherboards, and PS2's promotion of V-Chip and automotive electronics have injected new vitality into the capacitor market. With the development of science and technology, the application fields of aluminum electrolytic capacitors are constantly expanding. It can be predic...

Claims

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Application Information

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IPC IPC(8): C25D13/02C25D11/06H01G9/04
Inventor 孙岚布俊福郭文熹林昌健
Owner GUANGDONG HUAFENG NEW ENERGY TECH CO LTD
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