Solid-state polymer electrolyte and preparation method thereof
A solid polymer and electrolyte technology, which is applied in the manufacture of electrolyte batteries, non-aqueous electrolyte batteries, electrolyte immobilization/gelation, etc., can solve the problem of low conductivity of solid polymer electrolytes, and achieve superior conductivity performance, method Simple, low internal resistance effect
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[0037] Example 1
[0038] Weigh 1g of PEO and PVDF according to the mass ratio of 1:1, and dissolve in N,N-dimethylformamide, then weigh 0.10g of lithium perchlorate (LiClO4) and dissolve in this mixed solution, and perform ultrasound for 20 minutes , Make five groups, then add modified mesoporous silica (MCM41 / P25) 0.1g, 0.2g, 0.3g, 0.4g, 0.5g, and stir in a 35℃ water bath for 24h.
[0039] Pour the resulting viscous solution on a smooth glass plate, scrape it flat with a spatula, place it at room temperature for 2 hours, and then move it into a vacuum oven at 60° C. for 12 hours. A solid polymer electrolyte is obtained.
[0040] Use a doctor blade to peel off the solid polymer electrolyte membrane from the glass plate, cut it into an appropriate size, quickly move it into the glove box, and install it into a CR2032 button battery. Use electrochemical workstation to perform EIS test and calculate the conductivity.
Example Embodiment
[0041] Example 2
[0042] Weigh 1g of PEO and PVDF according to the mass ratio of 1:1, and dissolve in N,N-dimethylformamide, then weigh 0.10g of lithium perchlorate (LiClO4) and dissolve in this mixed solution, and perform ultrasound for 20 minutes , And then add 0.2g of modified mesoporous silica (MCM41 / P25) and stir for 24h in a 35℃ water bath.
[0043] Pour the resulting viscous solution on a smooth glass plate, scrape it flat with a spatula, place it at room temperature for 2 hours, and then move it into a vacuum oven at 60° C. for 12 hours. A solid polymer electrolyte is obtained.
[0044] Use a doctor blade to peel off the solid polymer electrolyte membrane from the glass plate, cut it into an appropriate size, quickly move it into the glove box, and install it into a CR2032 button battery. EIS test was performed with electrochemical workstation.
Example Embodiment
[0045] Example 3
[0046] Weigh PEO and PVDF at a mass ratio of 1:1, respectively weigh 1g and dissolve in N,N-dimethylformamide, then weigh 0.05g of lithium tetrafluoroborate and dissolve in this mixed solution, perform ultrasound for 20 minutes, and then Add 0.2g of modified mesoporous silica (MCM41 / P25) and stir for 24h in a 35°C water bath.
[0047] Pour the resulting viscous solution on a smooth glass plate, scrape it flat with a spatula, place it at room temperature for 2 hours, and then move it into a vacuum oven at 60°C for 12 hours. A solid polymer electrolyte is obtained.
[0048] Use a doctor blade to peel off the solid polymer electrolyte membrane from the glass plate, cut it into an appropriate size, quickly move it into the glove box, and install it into a CR2032 button battery. EIS test was performed with electrochemical workstation.
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