Structural supercapacitor based on graphene/polymer/cement composite and its preparation method
A cement composite material and supercapacitor technology, which is applied in the fields of energy storage and electrochemistry, can solve the problem that the electrical and mechanical properties of supercapacitors cannot be improved at the same time, so as to improve the electrical and mechanical properties, increase the mechanical properties, and broaden the application field Effect
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Embodiment 1
[0040] (1) After mixing 50 ml of ethanol and 0.1 ml of polytetrafluoroethylene, 80 mg of graphene was added, stirred with stirring for 2 h, in an oven at a 45 ° C, until a uniform, viscous material was obtained.
[0041] (2) The bubble nickel is used as a carrier fluid, and the substance obtained by step (1) is applied to the foam nickel and pressed with a certain force and naturally dried to use as a structural electrode.
[0042](3) 3 g of polyvinyl alcohol (PVA0388, a weight average molecular weight of approximately 31000, an alcohol solution was 88%), and 50 g of distilled water was added, heated to 75 ° C, stirred for 1 h, and a uniform polyvinyl alcohol solution was obtained.
[0043] (4) 2 g of potassium hydroxide was added to a polyvinyl alcohol aqueous solution, stirred at room temperature for 2 h, and a uniform alkaline polymer aqueous solution was obtained.
[0044] (5) The above obtained solution was added to 100 g of cement, and after stirring for 2 min, the mold was ...
Embodiment 2
[0048] (1) After mixing 50 ml of ethanol and 0.1 ml of polytetrafluoroethylene, 80 mg of graphene was added, stirred with stirring for 2 h, in an oven at a 45 ° C, until a uniform, viscous material was obtained.
[0049] (2) The bubble nickel is used as a carrier fluid, and the substance obtained by step (1) is applied to the foam nickel and pressed with a certain force and naturally dried to use as a structural electrode.
[0050] (3) 3 g of polyvinyl alcohol (PVA1088, a weight average molecular weight of about 67000, alcohol solution was 88%), was added to 75 ° C, stirred to 75 ° C, stirred for 1 h, and a uniform polyvinyl alcohol solution was obtained.
[0051] (4) 2 g of potassium hydroxide was added to a polyvinyl alcohol aqueous solution, stirred at room temperature for 2 h, and a uniform alkaline polymer aqueous solution was obtained.
[0052] (5) The above obtained solution was added to 100 g of cement, and after stirring for 2 min, the mold was placed, used as a structura...
Embodiment 3
[0055] (1) After mixing 50 ml of ethanol and 0.1 ml of polytetrafluoroethylene, 80 mg of graphene was added, stirred with stirring for 2 h, in an oven at a 45 ° C, until a uniform, viscous material was obtained.
[0056] (2) The bubble nickel is used as a carrier fluid, and the substance obtained by step (1) is applied to the foam nickel and pressed with a certain force and naturally dried to use as a structural electrode.
[0057] (3) 3 g of polyvinyl alcohol (PVA1788, a weight average molecular weight of about 145000, an alcohol solution was 88%), and 50 g of distilled water was added, heated to 75 ° C, stirred for 1 h, and a uniform polyvinyl alcohol aqueous solution was obtained.
[0058] (4) 2 g of potassium hydroxide was added to a polyvinyl alcohol aqueous solution, stirred at room temperature for 2 h, and a uniform alkaline polymer aqueous solution was obtained.
[0059] (5) The above obtained solution was added to 100 g of cement, and after stirring for 2 min, the mold wa...
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