Preparation method and application of graphene/lithium titanate composite material
A composite material and graphene technology, applied in the field of electrochemistry, can solve the problems of poor dispersion of composite materials, poor cycle performance, uneven particle size of lithium titanate, etc., and achieve the effect of uniform dispersion and small particle size
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Embodiment 1
[0031] Add 0.03mol tetrabutyl titanate, 0.15g graphene, and 0.5g surfactant to a 500ml special microwave reaction flask, add 200mL of tert-butanol to disperse, place in an ultrasonic generator and vibrate for 15 minutes to prepare Titanium source solution, add 0.024mol lithium acetate dihydrate to a 500mL beaker, add 10mL of deionized water to dissolve, and add 200mL of tert-butanol to dilute to make a lithium source solution, put the titanium source into a microwave reactor to heat up , make it reflux, and after reflux, use a 250mL dropping funnel to slowly drip the lithium source solution into one mouth of the flask, and react for 2 hours after the dripping is completed. After removing the solvent, the precursor of the graphene / lithium titanate composite material is obtained. Put the body into a tube furnace, heat up to 800°C, and sinter for 12 hours to prepare 3g of graphene / lithium titanate composite material; 0.3g of graphene / lithium titanate composite material, 37.5mg of ...
Embodiment 2
[0033] Add 0.03mol tetrabutyl titanate, 0.15g graphene, and 1g surfactant into a 500ml special microwave reaction flask, add 200mL of tert-butanol to disperse, place in an ultrasonic generator and vibrate for 15 minutes, and prepare titanium Source solution, add 0.024mol lithium acetate dihydrate to a 500mL beaker, add 10mL of deionized water to dissolve, and add 200mL of tert-butanol to dilute to form a lithium source solution, put the titanium source into a microwave reactor to heat up, Make it reflux, and after reflux, use a 250mL dropping funnel to slowly drip the lithium source solution in one mouth of the flask, and react for 1h after the dripping is completed. After removing the solvent, the precursor of the graphene / lithium titanate composite material is obtained. Put it into a tube furnace, heat up to 800°C, and sinter for 12 hours to prepare 3g of graphene / lithium titanate composite material; 0.3g of graphene / lithium titanate composite material, 37.5mg of acetylene bl...
Embodiment 3
[0035] 0.03mol tetrabutyl titanate, 0.3g graphene, and 0.3g surfactant were added to a 500ml special microwave reaction flask, and 200mL of tert-butanol was added to disperse, placed in an ultrasonic generator and vibrated for 20 minutes to prepare Titanium source solution, add 0.024mol lithium acetate dihydrate to a 500mL beaker, add 5mL of deionized water to dissolve, and add 200mL of tert-butanol to dilute to make a lithium source solution, put the titanium source into a microwave reactor to heat up , make it reflux, and after reflux, use a 250mL dropping funnel to slowly drip the lithium source solution into one mouth of the flask, and react for 2 hours after the dripping is completed. After removing the solvent, the precursor of the graphene / lithium titanate composite material is obtained. Put the body into a tube furnace, heat up to 800°C, and sinter for 12 hours to prepare 3g of graphene / lithium titanate composite material; 0.3g of graphene / lithium titanate composite mat...
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