Preparation and application of a metal zinc anode with a functional nanomaterial modification layer
A technology of nanomaterials and metal zinc, which is applied in the preparation and application of metal zinc negative electrodes, can solve problems such as battery short circuit, and achieve the effects of long cycle life, low cost and high stability
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Embodiment 1
[0040] Preparation method of copper nanowire modification layer
[0041] (1) 0.17g CuCl 2 2H 2 O and 0.31 g of glucose were dissolved in 50 mL of deionized water, then 1.44 g of octadecylamine was added to the above mixture and stirred into a uniform light blue emulsion. It was transferred to an autoclave and heated at 120° C. for 6 hours. After naturally cooling to room temperature, copper nanowires were obtained by centrifugal drying. Copper nanowires (microscopic appearance such as figure 1 ) was evenly dispersed into water by magnetic stirring for 30 minutes, with a concentration of 0.2 mg / mL;
[0042] (2) Suction filter the above dispersion onto a hydrophilic filter membrane (model: Tianjin Jinteng microporous water filter membrane, diameter 50 mm, pore size 0.8 μm) by suction filtration, wash with water three times, and then rinse at room temperature Drying for 10 hours, the prepared copper nanowire loading is 0.4mg / cm 2 The functional copper nanowire modified laye...
Embodiment 2
[0048] Preparation method of nano silicon dioxide modified layer
[0049] (1) Add 4 mL of propyl orthosilicate to a mixture containing 50 mL of ethanol, 10 mL of water and 1 mL of ammonia water. After magnetic stirring at room temperature for 14 hours, the suspension is centrifuged and dried to obtain nano-silica spheres. Silica spheres with a diameter of 150 nm (microscopic appearance as Figure 8 ) was evenly dispersed into water by magnetic stirring for 30 minutes, with a concentration of 0.4 mg / mL;
[0050] (2) Suction filter the above-mentioned dispersion onto a hydrophilic filter membrane (model: Tianjin Jinteng microporous water filter membrane, diameter 50 mm, pore size 0.8 μm) by suction filtration, wash with water three times, and then 60 ℃ drying for 4 hours, the prepared nano-silica loading capacity is 0.8mg / cm 2 The functional nano-silica modified layer filter membrane, the loaded thickness of nano-silica is 25μm;
[0051] (3) The commercial zinc flakes are ult...
Embodiment 3
[0055] Preparation method of carbon nanotube modified layer
[0056] (1) Commercial carboxylated carbon nanotubes (diameter: 15-30nm), hydroxylated carbon nanotubes (diameter: 15-30nm) and ordinary multi-walled carbon nanotubes (diameter: 8-20nm) will be sold by the scientific material station ) three different carbon nanotube powders (microscopic morphology such as Figure 10 ) was evenly dispersed into water by magnetic stirring for 30 minutes, with a concentration of 0.25 mg / mL;
[0057] (2) Suction-filter the above-mentioned dispersion liquid onto a hydrophilic filter membrane with a pore size of 0.8 μm (model: Tianjin Jinteng microporous water-based filter membrane with a diameter of 50 mm and a pore size of 0.8 μm) by means of suction filtration. Washed three times with water, and then dried at 60°C for 4 hours to obtain a carbon nanotube loading of 0.8 mg / cm 2 The functionalized carbon nanotube modified layer filter membrane, the loaded thickness of carbon nanotubes i...
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