A functional diaphragm coating material for lithium-sulfur battery and preparation method thereof
A coating material, a technology for lithium-sulfur batteries, applied in lithium batteries, battery pack components, non-aqueous electrolyte batteries, etc., can solve problems such as high specific capacity
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Embodiment 1
[0045] Use benzaldehyde, pyrrole, and cobalt acetate as materials. Follow the steps below to prepare cobalt porphyrin-based functional separator materials.
[0046] (1) Add 8g of benzaldehyde to the mixed solution of 10mL of acetic anhydride and 200mL of propionic acid solution, reflux and stir at 130°C for 30min, then add 5mL of pyrrole and continue to reflux at 130°C for 1h, cool to room temperature, Wash with water, methanol and dichloromethane, and then dry at 70°C to obtain the first powder; use 250mL of acetone to perform Soxhlet extraction at 100°C. The color of the acetone from the first powder to the Soxhlet extractor is transparent. drying to obtain the second powder;
[0047] (2) Add the second powder obtained in step (1) into 10 mL of pyridine and reflux at 120°C for 1.5h, then cool at 25°C for 15h, filter, wash with tetrahydrofuran, wash with water, and dry at 60°C to obtain Formula IV compound porphyrin ligand;
[0048] (3) Add 0.2 g of the porphyrin ligand an...
Embodiment 2
[0051] Use benzaldehyde, pyrrole and titanium acetate as materials. Follow the steps below to prepare titanium porphyrin-based functional separator materials.
[0052] (1) Add 8g of benzaldehyde to the mixed solution of 10mL of acetic anhydride and 200mL of propionic acid solution, reflux and stir at 130°C for 30min, then add 5mL of pyrrole and continue to reflux at 130°C for 1h, cool to room temperature, Wash with water, methanol and dichloromethane, and then dry at 70°C to obtain the first powder; use 250mL of acetone to perform Soxhlet extraction at 100°C. The color of the acetone from the first powder to the Soxhlet extractor is transparent. drying to obtain the second powder;
[0053] (2) Add the second powder obtained in step (1) into 10 mL of pyridine and reflux at 120°C for 1.5h, then cool at 25°C for 15h, filter, wash with tetrahydrofuran, wash with water, and dry at 60°C to obtain Formula IV compound porphyrin ligand;
[0054] (3) Add 0.2 g of the porphyrin ligand...
Embodiment 3
[0057] Use benzaldehyde, pyrrole, and iron acetate as materials. Follow the steps below to prepare iron porphyrin-based functional separator materials.
[0058] (1) Add 8g of benzaldehyde to the mixed solution of 10mL of acetic anhydride and 200mL of propionic acid solution, reflux and stir at 130°C for 30min, then add 5mL of pyrrole and continue to reflux at 130°C for 1h, cool to room temperature, Wash with water, methanol and dichloromethane, and then dry at 70°C to obtain the first powder; use 250mL of acetone to perform Soxhlet extraction at 100°C. The color of the acetone from the first powder to the Soxhlet extractor is transparent. drying to obtain the second powder;
[0059] (2) Add the second powder obtained in step (1) into 10 mL of pyridine and reflux at 120°C for 1.5h, then cool at 25°C for 15h, filter, wash with tetrahydrofuran, wash with water, and dry at 60°C to obtain Formula IV compound porphyrin ligand;
[0060] (3) Add 0.2 g of the porphyrin ligand and 0....
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