Self-supporting fluorine-nitrogen-doped graphene film material and preparation method thereof
A graphene film, self-supporting technology, applied in the direction of electrical components, electrochemical generators, battery electrodes, etc., to achieve the effect of simple operation, good electrochemical performance and mechanical performance, and low cost
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example 1
[0025] (1) Graphene oxide was dispersed in deionized water by ultrasonic vibration to obtain a 2 mg / mL brown solution.
[0026] (2) Pour the solution obtained in (1) onto a polytetrafluoroethylene plate, and dry it in air at 60° C. for 24 hours to obtain a graphene oxide film.
[0027] (3) The graphene oxide membrane was immersed in a mixture consisting of 25mL of acetonitrile and 1mL of hydrofluoric acid, and the mixture was placed in a polytetrafluoroethylene-lined reaction kettle, sealed and heated to 90°C for 24h.
[0028] (4) After the product in (3) was cooled to room temperature, residual reagents were removed with deionized water, and then dried in a vacuum oven at 60° C. for 24 h.
example 2
[0030] (1) Graphene oxide was dispersed in deionized water by ultrasonic vibration to obtain a 2 mg / mL brown solution.
[0031] (2) Pour the solution obtained in (1) onto a polytetrafluoroethylene plate, and dry it in air at 60° C. for 24 hours to obtain a graphene oxide film.
[0032] (3) The graphene oxide membrane was immersed in a mixture consisting of 25mL of acetonitrile and 1mL of hydrofluoric acid, and the mixture was placed in a polytetrafluoroethylene-lined reaction kettle, sealed and heated to 120°C for 24h.
[0033] (4) After the product in (3) was cooled to room temperature, residual reagents were removed with deionized water, and then dried in a vacuum oven at 60° C. for 24 h.
example 3
[0035] (1) Graphene oxide was dispersed in deionized water by ultrasonic vibration to obtain a 2 mg / mL brown solution.
[0036] (2) Pour the solution obtained in (1) onto a polytetrafluoroethylene plate, and dry it in air at 60° C. for 24 hours to obtain a graphene oxide film.
[0037] (3) The graphene oxide membrane was immersed in a mixture of 25 mL of acetonitrile and 1 mL of hydrofluoric acid, and the mixture was placed in a polytetrafluoroethylene-lined reaction kettle, sealed and heated to 150°C for 24 hours.
[0038] (4) After the product in (3) was cooled to room temperature, residual reagents were removed with deionized water, and then dried in a vacuum oven at 60° C. for 24 h.
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