Three-dimensional ordered macroporous sno 2 Film Preparation Method
A three-dimensional ordered, thin-film technology, used in electrolytic inorganic material coatings, electrical components, battery electrodes, etc., can solve the problem that the ordered microstructure is not easy to precisely control, and achieves reduction of local polarization, improvement of specific capacity, and easy operation. Effect
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specific Embodiment approach 1
[0017] Specific implementation mode 1: In this implementation mode, three-dimensional ordered macroporous SnO 2 The preparation method of film is carried out according to the following steps:
[0018] 1. Soak the nickel foil in a hydrochloric acid solution with a volume concentration of 10% to 30% for 5 to 10 seconds, then wipe the surface of the nickel foil with absolute ethanol, and then fix the nickel foil on the glass substrate to obtain a nickel sheet with a concentration of 0.2 The polystyrene aqueous solution of mol / L or the polystyrene dehydrated alcohol solution that volume concentration is 10% processes nickel sheet, obtains the nickel sheet that grows polystyrene colloidal crystal template;
[0019] 2. Use a DC power supply, use a tin sheet as a contrast electrode, and use a nickel sheet grown as a polystyrene colloidal crystal template in step 1 as a working electrode. 2 The deposition current density is electrodeposited with a constant current for 10 to 90 minute...
specific Embodiment approach 2
[0021] Specific embodiment two: the difference between this embodiment and specific embodiment one is that in the step one, the polystyrene aqueous solution processing method for the nickel sheet with a concentration of 0.2mol / L is: the polystyrene aqueous solution is poured in the flat-bottomed beaker, and then put Insert the nickel sheet so that the height of the polystyrene aqueous solution is at 2 / 3 of the nickel sheet, and then place the flat-bottomed beaker in an oven at 50°C for drying. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0022] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that in step one, the method for processing the nickel sheet with a polystyrene absolute ethanol solution with a volume concentration of 10% is: the nickel sheet is vertically soaked in polystyrene After 10-20 seconds in the styrene absolute ethanol solution, put it out, repeat the operation 3-5 times, and then place the nickel sheet in an oven at 80°C to dry. Others are the same as those in the first or second embodiment.
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