Large-size double-continuous porous foam bismuth and preparation method thereof
A porous foam, bicontinuous technology, applied in the field of nanomaterials and energy storage materials, can solve the problems of cumbersome, need to be improved, and many influencing factors, and achieve the effects of wide distribution, recyclable raw materials, and simple process
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[0037] Example 1: A large-size bi-continuous porous bismuth foam material. The preparation method includes the following steps:
[0038] (1) Preparation of lead-bismuth alloy electrode: Weigh 20.31g of metallic lead pellets (99.9%) and 0.41g of metallic tin pellets (99.9%), put them into a quartz glass tube, move them to a resistance furnace and heat to 500°C, at this temperature Hold for 180 minutes, shake the quartz glass tube every 30 minutes during this time period to fully mix the metallic lead and bismuth, and then cool the solution to solidify to form a lead-bismuth alloy. Cut the alloy with a blade or a saw blade, and then polish it with sandpaper to make it a thin disc with a diameter of 10mm (size adjustable) and a thickness of 1mm. The alloy was ultrasonically cleaned in absolute ethanol for 30 minutes, then rinsed with deionized water, and finally dried to obtain a lead-bismuth alloy electrode.
[0039] (2) Dealloying treatment: Use lead-bismuth alloy electrode as work...
Example Embodiment
[0041] Example 2: A large-size bi-continuous porous bismuth foam material, the preparation method includes the following steps:
[0042] (1) Preparation of lead-bismuth alloy electrode: Weigh 19.0g of metallic lead pellets (99.9%) and 1.67g metallic tin pellets (99.9%), put them into a quartz glass tube, move them to a resistance furnace and heat them to 500°C, at this temperature Keep it for 180 minutes. Shake the quartz glass tube every 30 minutes during this time period to fully mix the metallic lead and bismuth, and then cool the solution to solidify to form a lead-bismuth alloy. Cut the alloy with a blade or a saw blade, and then sand it with sandpaper to make it a thin disc with a diameter of 10mm and a thickness of 1mm. The alloy was ultrasonically cleaned in absolute ethanol for 30 minutes, then rinsed with deionized water, and finally dried to obtain a lead-bismuth alloy electrode.
[0043] (2) Dealloying treatment: Use lead-bismuth alloy electrode as working electrode, r...
Example Embodiment
[0045] Example 3: A large-size bi-continuous porous bismuth foam material, the preparation method includes the following steps:
[0046] (1) Preparation of lead-bismuth alloy electrodes: Weigh 17.6g of metallic lead pellets (99.9%) and 3.14g of metallic tin pellets (99.9%), put them into a quartz glass tube, and move them to a resistance furnace to heat to 500°C, at this temperature Keep it for 180 minutes. Shake the quartz glass tube every 30 minutes during this time period to fully mix the metallic lead and bismuth, and then cool the solution to solidify to form a lead-bismuth alloy. Cut the alloy with a blade or a saw blade, and then sand it with sandpaper to make it a thin disc with a diameter of 10mm and a thickness of 1mm. The alloy was ultrasonically cleaned in absolute ethanol for 30 minutes, then rinsed with deionized water, and finally dried to obtain a lead-bismuth alloy electrode.
[0047] (2) Dealloying treatment: Use lead-bismuth alloy electrode as working electrode,...
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