Nano composite material as well as preparation method and application thereof
A nanocomposite material and metal nanotechnology, which is applied in the field of zinc secondary battery negative electrode materials and its preparation, can solve the problems of uneven modification and easy falling off, and achieve low cost, ensure uniformity, and improve the effect of hydrogen evolution overpotential
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[0047] Example 1
[0048] (1) Weigh 2.5g zinc acetate powder and 100mg Bi(NO 3 ) 3 ·5H 2 O was added to 50 ml of ethylene glycol solution, stirred for 1 hour to fully dissolve the two, and then 1 g of glucose was added as a reducing agent to the mixed solution to obtain a transparent mixed solution.
[0049] (2) Pour the obtained transparent mixed solution into a hydrothermal kettle, place it in a high-temperature oven and adjust the heating rate to 10℃ / min. After water heating at a temperature of 150℃ for 3h, use water cooling to quickly drop it to Room temperature.
[0050] (3) Filter and separate the obtained hydrothermal product to obtain a brown precursor powder, then put the precursor into 100ml of ethanol and sonicate for 10min, repeat washing and suction filtration three times, and then put the precursor into an oven to dry for 8h stand-by.
[0051] (4) Finally, the obtained precursor powder is put into a high-temperature resistance furnace, and the heating rate is maintained...
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[0056] Example 2
[0057] (1) Weigh 4g zinc acetate powder and 400mg In(NO 3 ) 3 Add to 70ml of glycerol solution, stir for 1.5h to fully dissolve the two, and then add 1.3g of fructose as reducing agent to the mixed solution to obtain a transparent mixed solution.
[0058] (2) Pour the resulting transparent mixed solution into a hydrothermal kettle, place it in a high-temperature oven and adjust the heating rate to 14℃ / min. After water heating at 160℃ for 5 hours, use water cooling to quickly drop it to Room temperature.
[0059] (3) Filter and separate the obtained hydrothermal product to obtain a brown precursor powder, then put the precursor into 100ml deionized water and sonicate for 15min, repeat washing and suction filtration three times, and then put the precursor into an oven to dry for 10h stand-by.
[0060] (4) Finally, the obtained precursor powder is put into a high-temperature resistance furnace, and the heating rate is maintained at 5° C. / min, and then calcined at 600°...
Example Embodiment
[0065] Example 3
[0066] (1) Weigh 4.5g zinc acetate powder and 500mg SnCl in proportion 2 ·2H 2 O was added to 50ml of ethylene glycol solution, stirred for 2h to fully dissolve the two, and then 1g of glucose was added as a reducing agent to the mixed solution to obtain a transparent mixed solution.
[0067] (2) Pour the transparent mixed solution into a hydrothermal kettle, place it in a high-temperature oven and adjust the heating rate to 18°C / min. After water heating at a temperature of 180°C for 7 hours, water cooling is used to quickly drop it Room temperature.
[0068] (3) Filter and separate the obtained hydrothermal product to obtain a brown precursor powder, then put the precursor into 100ml of methanol and sonicate for 20min, repeat washing and suction filtration three times, and then put the precursor into an oven to dry for 10h stand-by.
[0069] (4) Finally, the obtained precursor powder is put into a high-temperature resistance furnace, and the heating rate is mainta...
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