A kind of highly wrinkled graphene material and preparation method thereof
A graphene and wrinkle technology, applied in the field of high wrinkle graphene materials and their preparation, can solve the problems of uneven graphene structure, high requirements on synthesis equipment, and decreased electrochemical performance, and achieve high energy density, high power density, low cost effect
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Embodiment 1
[0053] The preparation method of the highly wrinkled graphene material of the present embodiment comprises the steps:
[0054] 1) Prepare an aqueous ferric chloride solution with a concentration of 0.01mol / L, prepare an aqueous urea solution with a concentration of 0.02mol / L, slowly add 20mL of urea aqueous solution to 100mL of ferric chloride solution dropwise, and carry out Magnetic stirring, after the dropwise addition, let stand at room temperature for 1h, then react for 5h under the condition of heating in a water bath at 80°C, and obtain bright reddish-brown Fe(OH) 3 Sol, wherein the surface of ferric hydroxide colloidal particles is positively charged;
[0055] Weigh 2g of graphite powder and 2g of sodium nitrate, and add 100mL of concentrated sulfuric acid with a concentration of 98%, and stir for 15min in an ice bath at 0°C to make them evenly mixed, then add 12g of potassium permanganate, Leave to cool in an ice bath for 30 minutes, then stir and react in an ice bat...
Embodiment 2
[0060] The preparation method of the highly wrinkled graphene material of the present embodiment comprises the steps:
[0061] 1) Prepare an aqueous ferric chloride solution with a concentration of 0.2mol / L, prepare an aqueous urea solution with a concentration of 0.5mol / L, slowly add 10mL of urea aqueous solution to 100mL of ferric chloride solution, and carry out the process of adding Magnetic stirring, after the dropwise addition, let stand at room temperature for 5 hours, and then react for 10 hours under the condition of heating in a water bath at 70°C to obtain bright reddish-brown Fe(OH) 3 Sol, wherein the surface of ferric hydroxide colloidal particles is positively charged;
[0062] Weigh 2g of graphite powder and 2g of sodium nitrate, and add 100mL of concentrated sulfuric acid with a concentration of 98%, and stir for 15min in an ice bath at 0°C to make them evenly mixed, then add 12g of potassium permanganate, Leave to cool in an ice bath for 30 minutes, then stir...
Embodiment 3
[0066] The preparation method of the highly wrinkled graphene material of the present embodiment comprises the steps:
[0067] 1) Prepare an aqueous ferric chloride solution with a concentration of 0.5mol / L, prepare an aqueous urea solution with a concentration of 1mol / L, and slowly add 12.5mL of urea aqueous solution to 100mL of ferric chloride solution dropwise. Magnetic stirring, after the dropwise addition, let stand at room temperature for 10 hours, and then react for 0.5 hours under the condition of heating in a water bath at 90°C to obtain bright reddish-brown Fe(OH) 3 Sol, wherein the surface of ferric hydroxide colloidal particles is positively charged;
[0068] Weigh 2g of graphite powder and 2g of sodium nitrate, and add 100mL of concentrated sulfuric acid with a concentration of 98%, and stir for 15min in an ice bath at 0°C to make them evenly mixed, then add 12g of potassium permanganate, Leave to cool in an ice bath for 30 minutes, then stir and react in an ice ...
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