High energy density quasi-solid-state sodium-ion battery manufacturing method
A sodium ion battery, high energy density technology, applied in the direction of secondary battery, solid electrolyte, final product manufacturing, etc., can solve problems such as no industrialization scheme, achieve long chain segment, high molecular weight, high safety Effect
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Embodiment approach 1
[0049] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte
[0050] N-methylpyrrolidone (NMP), lithium sulfide Na 2 S. Lithium hydroxide NaOH, according to the material ratio of 4:1:0.2, put it in a high-pressure reactor with stirring function, and raise the temperature to 220 ° C for 4 hours to obtain a dehydration system; secondly, cool the dehydration system To 90°C, add 1,4-dichlorobenzene (p-DCB), p-DCB is the same as Na 2 The molar ratio of S to substance is 1:1. The reaction was carried out at 230° C. for 120 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. The mixed powder A is sheared and pulverized with a frozen alloy blade at -40° C. to obtain a mixed powder B with D50=5 μm. In the pulverized mixed powder B, calixarone (the ad...
Embodiment approach 2
[0063] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte
[0064] N-methylpyrrolidone (NMP), lithium sulfide Na 2 S. Lithium hydroxide NaOH, according to the mass ratio of 5:2:0.3, put it in a high-pressure reactor with stirring function, and heat it up to 210 ° C for 5 hours to dehydrate at a high temperature to obtain a dehydration system; secondly, cool the dehydration system To 80 ℃, add p-DCB, p-DCB with Na 2 The molar ratio of S to substance is 1:1. The reaction was carried out at 230° C. for 120 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. The mixed powder A is used at -40°C by using a frozen impact jet mill plus a classification system and a vibrating sieve machine to obtain a mixed powder B with D50=10 μm. In the pulverize...
Embodiment approach 3
[0075] (1) Preparation of isotropic sodium ion polyethylene-polyphenylene sulfide (PE-PPS) composite solid electrolyte
[0076] Put N-methylpyrrolidone (NMP), lithium sulfide Na2S, and lithium hydroxide NaOH in a high-pressure reactor with stirring function according to the mass ratio of 4.5:1.5:0.3, and heat up to 210°C for high-temperature dehydration After 5 hours, the dehydration system was obtained; secondly, the temperature of the dehydration system was lowered to 80°C, and 1,4-dichlorobenzene (p-DCB) was added, and p-DCB was the same as Na 2 The molar ratio of S to substance is 1:1. The reaction was carried out at 240° C. for 150 minutes to obtain a mixed slurry. Again, drop the same amount of HCl as NaOH in the mixed slurry to just neutralize NaOH, and remove NMP and H in the mixed slurry by evaporation or sublimation. 2 O, to obtain dry mixed powder A. The mixed powder A is used at -40 ° C to use a frozen impact jet mill plus a classification system and a vibrating...
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