A simple method for preparing polymer electrolyte thin films for lithium-ion batteries
A technology of electrolyte film and solid polymer, applied in the direction of non-aqueous electrolyte storage battery, electrolyte storage battery manufacturing, final product manufacturing, etc. Ideal chemical properties, simple and convenient preparation method, and good physical appearance
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specific Embodiment approach 1
[0025] Specific embodiment one: the method for preparing PVdF / PVA / MMT solid polymer electrolyte film described in this embodiment, the method for preparing PVdF / PVA / MMT solid polymer electrolyte film,
[0026] It includes the following steps.
[0027] Step 1: Place the PVdF and PVA to be used in a drying oven for drying.
[0028] Step 2: Dissolve 0.5g PVdF in 2-3ml DMF solvent for 15 hours, dissolve 2wt%-6wt% MMT in 1-2ml THF solvent for 15 hours, mix the two and continue stirring for 15 hours to ensure that the polymer solution is uniform and stable.
[0029] Step 3: Sonicate the stirred solution for 5-10 minutes.
[0030] Step 4: Dissolve 0.1g PVA in 1-2ml DMF solvent for 2 hours in advance, continue mixing with the solution mixed with PVdF and MMT, add appropriate amount of lithium salt and continue stirring for 6 hours until the solution is uniform and stable.
[0031] Step 5: Repeat step 3, then go to step 6.
[0032] Step 6: Pour the stirred polymer solution on a clea...
specific Embodiment approach 2
[0042] Embodiment 2: This embodiment is a further description of the method for preparing PVdF / PVA / MMT solid polymer electrolyte film described in Embodiment 1. The second step is: combine the dried PVdF and MMT in step 1 Dissolve in appropriate amount of DMF and THF solution respectively and stir for 15 hours, then mix and stir for 15 hours to ensure uniform and stable solution.
specific Embodiment approach 3
[0043] Specific embodiment three: this embodiment is a further description of the method for preparing PVdF / PVA / MMT solid polymer electrolyte film described in specific embodiment one,
[0044] The third step is: put the polymer solution stirred in the second step in an ultrasonic wave for 5-10 minutes to ensure the homogeneity of the solution.
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