Solid-state composite electrolyte and preparation method thereof
A composite electrolyte and solid-state technology, which is applied in the direction of solid electrolyte, non-aqueous electrolyte, non-aqueous electrolyte storage battery, etc., can solve the problems that it is difficult to have both thermal stability and high ionic conductivity, complicated preparation methods, and poor chemical properties. , to achieve good chemical and electrochemical properties, simple preparation method, and good mechanical properties
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Embodiment 1
[0038]This embodiment provides a solid-state composite electrolyte, including 0.2372g lithium bisfluorosulfonimide, 1.7628g N-methyl, propylpyrrolidine bistrifluoromethanesulfonimide salt (density 1.39g cm -3 ) and 1 g bacterial cellulose;
[0039] The preparation method of the above-mentioned solid-state composite electrolyte includes,
[0040] Weigh 0.2372g lithium bisfluorosulfonimide in 1.7628g N-methyl, propylpyrrolidine bistrifluoromethanesulfonimide salt, stirring continuously until the lithium salt is completely dissolved to obtain 1mol L -1 Ionic liquid electrolyte;
[0041] Weigh 1 g of 200-mesh bacterial cellulose powder and place it in a ball mill jar, then add the above-mentioned ionic liquid electrolyte, seal the ball mill jar and mill for 4 hours at a speed of 300r min -1 , and obtain the solidified composite electrolyte after ball milling.
Embodiment 2
[0043] This embodiment provides a solid-state composite electrolyte, including 0.3181g lithium bistrifluoromethanesulfonylimide, 1.6819g 1-ethyl-3-methylimidazole bistrifluoromethanesulfonylimide salt (density 1.518 g cm -3 ) and 1 g bacterial cellulose;
[0044] The preparation method of the above-mentioned solid-state composite electrolyte includes,
[0045] In a glove box with argon atmosphere and moisture content and oxygen content less than 0.1ppm, weigh 0.3181g lithium bistrifluoromethanesulfonylimide to 1.6819g 1-ethyl-3-methylimidazole bistrifluoromethanesulfonyl In the imide salt, keep stirring until the lithium salt is completely dissolved to obtain 1mol L -1 Ionic liquid electrolyte;
[0046] Weigh 1 g of 200-mesh bacterial cellulose powder and place it in a ball mill jar, then add the above-mentioned ionic liquid electrolyte, seal the ball mill jar and mill for 4 hours at a speed of 300 r min -1 , and obtain the solidified composite electrolyte after ball milli...
Embodiment 3
[0048] This embodiment provides a solid-state composite electrolyte, including 0.2127g lithium trifluoromethanesulfonimide, 1.2873g N-methyl, propylpyrrolidine bistrifluoromethanesulfonimide salt and 1g bacterial cellulose ;
[0049] The preparation method of the above-mentioned solid-state composite electrolyte includes,
[0050] In a glove box with argon atmosphere and moisture content and oxygen content less than 0.1ppm, weigh 0.2127g lithium bistrifluoromethanesulfonylimide to 1.2873g N-methyl, propylpyrrolidine bistrifluoromethanesulfonyl In the imide salt, stir continuously until the lithium salt is completely dissolved to obtain 0.8mol·L -1 Ionic liquid electrolyte;
[0051] Weigh 1 g of 200-mesh bacterial cellulose powder and place it in a ball mill jar, then add the above-mentioned ionic liquid electrolyte, seal the ball mill jar and mill for 4 hours at a speed of 300 r min -1 , and obtain the solidified composite electrolyte after ball milling.
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