A preparation method and application of functionalized graphene quantum dot modified gel binder
A quantum dot and binder technology, which is applied in the field of functionalized graphene quantum dot modified gel binder and its preparation, can solve the problem of open circuit of active material conductive agent, loss of charge transmission path, and binder bonding performance decrease and other problems, to achieve the effect of improving the comprehensive electrochemical performance, improving the electrical performance and mechanical performance
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[0033]Example 1
[0034]This embodiment provides a method for preparing a functionalized graphene quantum dot modified gel binder, which includes the following steps:
[0035]1) Preparation of functionalized graphene quantum dots: Dissolve 1g of citric acid and 0.5g of N,N-methylenebisacrylamide in 40ml of water, and then transfer to the reactor for pyrolysis. The pyrolysis temperature is 300°C. The pyrolysis time is 30min. After the reaction is completed, it is cooled to room temperature, the slurry is re-dissolved in deionized water for dialysis, and a dialysis bag with a molecular weight cut-off of 3500 is used for dialysis purification, and finally functionalized graphene quantum dots are obtained;
[0036]2) Preparation of functionalized graphene quantum dots modified ion conductive gel binder: 0.2g functionalized graphene quantum dots and 2g acrylic monomer are uniformly dispersed in water; under the protection of nitrogen, the mixed solution system is placed Stir continuously in a wat...
Example Embodiment
[0038]Example 2
[0039]This embodiment provides a method for preparing a functionalized graphene quantum dot modified gel binder, which includes the following steps:
[0040]1) Preparation of functionalized graphene quantum dots: Dissolve 10g of citric acid and 1g of diacetone acrylamide in 100ml of water, and then transfer them into the reactor for pyrolysis. The high temperature pyrolysis temperature is 250°C, and the pyrolysis time is 24min. After the reaction is completed, cool to room temperature, re-dissolve the slurry in deionized water for dialysis, use a dialysis bag with a molecular weight cut-off of 2000 for dialysis purification, and finally obtain functionalized graphene quantum dots;
[0041]2) Preparation of functionalized graphene quantum dots modified ion conductive gel binder: 2g functionalized graphene quantum dots and 2g acrylic monomer are uniformly dispersed in water; under the protection of nitrogen, the mixed solution system is placed at 80 Stir continuously in a wat...
Example Embodiment
[0043]Example 3
[0044]This embodiment provides a functionalized graphene quantum dot modified gel binder and a preparation method thereof. The preparation method of the functionalized graphene quantum dot modified gel binder includes the following steps:
[0045]1) Preparation of functionalized graphene quantum dots: Dissolve 5g of citric acid and 1g of butoxyacrylamide in 10ml of water, transfer them into the reactor for pyrolysis, the high-temperature pyrolysis temperature is 150℃, and the pyrolysis time is 72h. After completion, cool to room temperature, re-dissolve the slurry in deionized water for dialysis, use a dialysis bag with a molecular weight cut-off of 500 for dialysis purification, and finally obtain functionalized graphene quantum dots;
[0046]2) Preparation of functionalized graphene quantum dots modified ion conductive gel binder: 1g functionalized graphene quantum dots and 50g acrylic monomer are uniformly dispersed in water; under the protection of nitrogen, the mixed s...
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