Method for preparing surface-functionalized porous carbon super capacitor electrode material
A surface functionalization and supercapacitor technology, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of short cycle life, poor conductivity of conductive polymers and transition metal oxides, and limit wide application. To achieve the effect of increasing the specific capacitance value
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Embodiment 1
[0018] The preparation method of the surface-functionalized porous carbon supercapacitor electrode material in this example is as follows: 0.6g macroporous carbon powder is mixed with 60mlH2O2, ultrasonicated for 30 minutes, then immersed for 1 hour, stirred at room temperature for 2 hours, and then deionized The product was washed with water until the pH value was neutral, and vacuum-dried at 80° C. for 12 hours to obtain a solid product after oxidation treatment. Put the oxidized solid product in a homogeneous reactor, mix it with hydroquinone at a mass ratio of 1:7, add 50ml of water, and place the reactor in a homogeneous reactor at 90°C After reacting for 10 hours, the product was washed twice with deionized water, and then vacuum-dried for 12 hours to obtain a surface-functionalized porous carbon material.
[0019] Nitrogen adsorption test shows that the surface functionalized porous carbon has a specific surface area of 222.4m2 / g, of which the mesopore specific surfac...
Embodiment 2
[0021] The preparation method of the surface-functionalized porous carbon supercapacitor electrode material in this example is as follows: 0.6g macroporous carbon powder is mixed with 60ml concentrated H2SO4, ultrasonicated for 30 minutes, then immersed for 1 hour, heated in a water bath at a constant temperature of 40°C, and stirred for 2 hours, and then wash the product with deionized water until the pH value is neutral, and dry it in vacuum at 80° C. for 12 hours to obtain a solid product after oxidation treatment. Put the oxidized solid product in a homogeneous reactor, mix it with naphthoquinone at a mass ratio of 1:7, add 50ml of water, and place the reactor in a homogeneous reactor at 90°C for 10 Hours, the product was washed twice with deionized water, and then vacuum-dried for 12 hours to obtain a surface-functionalized porous carbon material.
[0022] Nitrogen adsorption test shows that the surface functionalized porous carbon has a specific surface area of 198.6m2...
Embodiment 3
[0024] The preparation method of the surface-functionalized porous carbon supercapacitor electrode material in this example is as follows: 0.6g of mesoporous carbon powder is mixed with 60ml of concentrated HNO3, ultrasonicated for 30 minutes, then immersed for 1 hour, heated in a water bath at a constant temperature of 60°C, and stirred for 2 hours, and then wash the product with deionized water until the pH value is neutral, and dry it in vacuum at 80° C. for 12 hours to obtain a solid product after oxidation treatment. Put the oxidized solid product in a homogeneous reactor, mix it with hydroquinone at a mass ratio of 1:7, add 50ml of water, and place the reactor in a homogeneous reactor at 90°C After reacting for 10 hours, the product was washed with deionized water for 3 times, and then vacuum-dried for 12 hours to obtain a surface-functionalized porous carbon material.
[0025] Nitrogen adsorption test shows that the surface functionalized porous carbon has a specific su...
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