A kind of electrode active material and preparation method and lithium primary battery
A technology for electrode active materials and batteries, which is applied in primary batteries, electrodes of primary batteries, and positive electrodes, etc., and can solve problems such as poor conductivity of fluorinated graphite
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Embodiment 1
[0034] Step 1. Dissolve and disperse 10 g of fluorinated graphite (with a fluorocarbon ratio of 1.1) in 2 L of N-methylpyrrolidone (NMP), stir evenly, and then add mechanical peeling equipment to a sand mill for continuous high-density shearing and peeling 6h, high-quality fluorinated graphene with complete structure was obtained;
[0035] Step 2. Select 100mL of graphene oxide prepared by 2 mg / mL Hummers method, add 10mL of 10% hydrogen peroxide, continuously feed 100 ppm of ozone under stirring, and react under 200 W ultraviolet light irradiation for 6h to obtain porous graphene oxide ;
[0036] Step 3: Stir and disperse the fluorinated graphene and porous graphene oxide obtained in Step 1 and Step 2 in absolute ethanol for 2 hours at a mass ratio of 10:1, separate the solid and liquid after suction filtration, and place in an oven at 200°C Dry and reduce for 3 hours under an argon atmosphere to obtain an electrode active material;
[0037] Step 4. Use the electrode active...
Embodiment 2
[0039] Step 1. Dissolve and disperse 20 g of fluorinated graphite (with a fluorine-to-carbon ratio of 1.0) in 2 L of N,N-dimethylformamide (DMF), stir evenly, then add mechanical stripping equipment to a sand mill, and continuously high-density shear Cut and peel for 12 hours to obtain high-quality fluorinated graphene with complete structure;
[0040] Step 2. Select 100mL of graphene oxide prepared by 4 mg / mL Hummers method, add 10mL of 20% hydrogen peroxide, continuously feed 200 ppm of ozone under stirring, and react under 200 W ultraviolet light irradiation for 6h to obtain porous graphene oxide ;
[0041] Step 3. Stir and disperse the fluorinated graphene and porous graphene oxide obtained in Step 1 and Step 2 in a mixed solvent of absolute ethanol and deionized water (1:1) at a mass ratio of 20:1 for 2 h, pump After filtering, place it in an oven at 180°C to dry and reduce for 4 hours under a nitrogen atmosphere;
[0042] Step 4. Use the electrode active material obtai...
Embodiment 3
[0044] Step 1. Dissolve and disperse 15 g of fluorinated graphite (with a fluorine-to-carbon ratio of 0.8) in 2 L of dimethyl sulfoxide (DMSO), stir evenly, and then add mechanical stripping equipment to a sand mill for continuous high-density shearing and stripping 12h, high-quality fluorinated graphene with complete structure was obtained;
[0045] Step 2. Select 200mL of graphene oxide prepared by 2 mg / mL Hummers method, add 10mL of 20% hydrogen peroxide, continuously feed 100 ppm of ozone under stirring, and react under 200 W ultraviolet light for 8 hours to obtain porous graphene oxide ;
[0046] Step 3. Stir and disperse the fluorinated graphene and porous graphene oxide obtained in steps 1 and 2 in a mixed solvent of absolute ethanol and deionized water (1:1) at a mass ratio of 15:1 for 2 hours, pump After filtering, place it in an oven at 220°C for 3 hours to dry and reduce under an argon atmosphere;
[0047] Step 4. Use the electrode active material obtained in step...
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