Degradable solid electrolyte membrane, preparation method thereof, and lithium battery made therefrom
A technology of solid electrolyte membrane and methyl methacrylate, which is applied in the direction of non-aqueous electrolyte batteries, solid electrolytes, lithium batteries, etc., can solve the problems of poor mechanical properties, difficult biodegradation, threats to the human environment, etc., and achieve good mechanical properties, Eases the effect of oil resources, superior performance
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[0019] The preparation method of the degradable solid electrolyte membrane, it comprises the following process steps:
[0020] (1) Methyl methacrylate pretreatment: Methyl methacrylate is washed with aqueous sodium hydroxide solution and water, then dried for subsequent use;
[0021] (2) Preparation of active silica sol: Dissolve ethyl orthosilicate in a mixed solvent of water and ethanol (the volume ratio of water and ethanol in the mixed solvent is 1:1), then add silane coupling agent, at 45-50 At ℃, stir while heating for 1-2h, then add dilute hydrochloric acid to adjust the pH of the reaction system to 3-4, and continue to react at 45-50℃ for 10-12h to obtain a colorless and transparent active silica sol;
[0022] (3) Prepare base material A: Methyl methacrylate and polylactic acid-glycolic acid copolymer, polycaprolactone, polylactic acid, diphenylmethane diisocyanate, phthalic acid after step (1) pretreatment Dibutyl ester is dissolved in the organic solvent, then adds ...
Embodiment 1
[0037] A degradable solid-state electrolyte membrane, which includes the following raw materials calculated in parts by weight: 10 parts of tapioca modified starch, 10 parts of polylactic acid-glycolic acid copolymer, 8 parts of polycaprolactone, 20 parts of polylactic acid, 10 parts of ethyl silicate, 10 parts of methyl methacrylate, 2 parts of silane coupling agent KH570, 5 parts of diphenylmethane diisocyanate, 5 parts of cellulose acetate propionate, 8 parts of dibutyl phthalate, 0.1 part of benzoyl peroxide, 10 parts of lithium perchlorate.
[0038]The preparation method of the degradable solid electrolyte membrane comprises the following process steps:
[0039] (1) Methyl methacrylate pretreatment: Methyl methacrylate is placed in a separatory funnel, washed 5 times with 5% aqueous sodium hydroxide solution, then washed with distilled water until neutral, and the methacrylic acid after washing The methyl ester was dried with anhydrous sodium sulfate, and the sodium sulf...
Embodiment 2
[0045] A degradable solid-state electrolyte membrane, which includes the following raw materials calculated in parts by weight: 12 parts of tapioca modified starch, 8 parts of polylactic acid-glycolic acid copolymer, 9 parts of polycaprolactone, 18 parts of polylactic acid, 12 parts of ethyl silicate, 8 parts of methyl methacrylate, 3 parts of silane coupling agent KH570, 4 parts of diphenylmethane diisocyanate, 7 parts of cellulose acetate propionate, 6 parts of dibutyl phthalate, 0.2 parts of benzoyl peroxide, 9 parts of lithium perchlorate.
[0046] The preparation method of the degradable solid electrolyte membrane comprises the following process steps:
[0047] (1) Methyl methacrylate pretreatment: Methyl methacrylate is placed in a separatory funnel, washed 5 times with 5% aqueous sodium hydroxide solution, then washed with distilled water until neutral, and the methacrylic acid after washing The methyl ester was dried with anhydrous sodium sulfate, and the sodium sulfa...
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