Etching method of ultra-high-pressure energy storage material
An energy storage material and ultra-high voltage technology, applied in the direction of electrolytic capacitors, capacitors, electrical components, etc., can solve the problems of small corrosion foil holes, easy to block specific volume, etc., achieve fast boost time, overcome small holes, process steps and The effect of parametric science
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[0039] Example 1
[0040] 1. Preparation of raw material aluminum foil: choose aluminum foil prepared by vacuum annealing at 550℃ for 1 hour as raw material, cubic texture ≧96%, thickness of 116μm; the chemical composition of raw material aluminum foil is shown in Table 1.
[0041] Table 1 Chemical composition of raw material aluminum foil (mass fraction, %)
[0042]
[0043] 2. Using the method of the present invention to prepare corrosion foil includes the following steps:
[0044] (1) Pre-treatment: Firstly, the raw material aluminum foil is soaked in 0.8mol / L sodium hydroxide solution for 60s, and the treatment temperature is controlled to 50℃; then the aluminum foil is soaked in a mixed solution containing 3wt% sulfuric acid and 5wt% phosphoric acid for 120s , Control the treatment temperature to 60℃; finally use deionized water to wash the aluminum foil at room temperature for 2 minutes;
[0045] (2) First-level direct current electrochemical corrosion: place the aluminum foil tr...
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[0052] Example 2
[0053] 1. Preparation of raw material aluminum foil: select aluminum foil prepared by vacuum annealing at 530°C for 1.5 hours as raw material, cubic texture ≧95%, thickness of 110μm; the chemical composition of raw material aluminum foil is shown in Table 2.
[0054] Table 2 Chemical composition of raw material aluminum foil (mass fraction, %)
[0055]
[0056] 2. Using the method of the present invention to prepare corrosion foil includes the following steps:
[0057] (1) Pre-treatment: First, soak the raw material aluminum foil in a 1mol / L sodium hydroxide solution for 50s, and control the treatment temperature to 455°C; then put the aluminum foil in a mixed solution containing 5wt% sulfuric acid and 3wt% phosphoric acid for 150s, Control the treatment temperature to 50℃; finally, use deionized water to wash the aluminum foil at room temperature for 3 minutes;
[0058] (2) First-level DC electrochemical corrosion: place the aluminum foil treated in step (1) in a mi...
Example Embodiment
[0065] Example 3
[0066] 1. Preparation of raw material aluminum foil: choose aluminum foil prepared by vacuum annealing at 580℃ for 0.5h as raw material, cubic texture ≧95%, thickness of 120μm; the chemical composition of raw material aluminum foil is shown in Table 3.
[0067] Table 3 Chemical composition of raw material aluminum foil (mass fraction, %)
[0068]
[0069] 2. Using the method of the present invention to prepare corrosion foil includes the following steps:
[0070] (1) Pre-treatment: Firstly, soak the raw material aluminum foil in 0.5mol / L sodium hydroxide solution for 80s, and control the treatment temperature to 60℃; then put the aluminum foil in a mixed solution containing 2wt% sulfuric acid and 8wt% phosphoric acid for 60s , Control the treatment temperature to 70℃; finally use deionized water to wash the aluminum foil at room temperature for 2 minutes;
[0071] (2) First-level DC electrochemical corrosion: place the aluminum foil treated in step (1) in a mixed sol...
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