Super capacitor electrode material
A technology for supercapacitors and electrode materials, which is applied in the direction of hybrid capacitor electrodes, etc., can solve the problems of easy agglomeration and the performance advantages of graphene cannot be fully utilized, and achieve effective utilization, easy preparation, and improved dispersion and adhesion. Effect
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Embodiment 1
[0019] Weigh 2 parts of polyacrylonitrile, 29 parts of porous graphene, and 69 parts of activated carbon, dissolve polyacrylonitrile in the solution formed by DMF, add porous graphene (specific surface area 2200 m 2 / g) Ultrasonic for 1h, then add activated carbon and stir for 3h; remove DMF, dry to constant weight at 100°C to obtain polyacrylonitrile-treated supercapacitor electrode materials, such as figure 1 , 2 shown.
[0020] Weigh 90 parts of electrode material, 5 parts of conductive agent and 5 parts of binder (graphene and activated carbon), acetylene black, CMC and SBR (CMC:SBR=2:3, SBR is 50% emulsion). After the CMC was dissolved in deionized water, the electrode material was added and stirred for 1 hour, then the SBR emulsion was added, and the stirring was continued for 2 hours, and the slurry was allowed to stand for defoaming. The uniformly mixed slurry was coated on aluminum foil, vacuum-dried, and cut to serve as a supercapacitor electrode. piece.
Embodiment 2
[0022] Weigh 2 parts of polytetrafluoroethylene, 30 parts of porous graphene, and 68 parts of activated carbon. 2 / g) Ultrasonic in deionized water for 1h to form a mixed solution, add activated carbon and ethanol of the same mass as activated carbon, stir for 2h, add polytetrafluoroethylene emulsion (60%), continue to stir for 2h, remove deionized water, and dry at 80°C to a constant weight to obtain a PTFE-treated supercapacitor electrode material, such as image 3 , 4 shown.
[0023] Weigh 90 parts of electrode material, 5 parts of conductive agent and 5 parts of binder (graphene and activated carbon), VGCF, CMC and SBR (CMC:SBR=2:3, SBR is 50% emulsion). After the CMC was dissolved in deionized water, the electrode material was added and stirred for 2 hours, then the SBR emulsion was added, and the stirring was continued for 3 hours. Let it stand for defoaming, and then coat the evenly mixed slurry on aluminum foil, vacuum dry, and cut it as a supercapacitor electrode. ...
Embodiment 3
[0025] Weigh 0.1 parts of polyethersulfone, 9.9 parts of porous graphene, and 90 parts of activated carbon, and weigh the porous graphite (specific surface area 1500 m 2 / g) alkene was added to the DMF solution and sonicated for 1 h to form a mixed solution, polyethersulfone was added to ultrasonic for 1 h, then activated carbon was added, and stirred for 2 h; DMF was removed, and dried at 100 °C to constant weight to obtain a polyethersulfone-treated supercapacitor electrode material, such as Figure 5 , 6 shown.
[0026] Weigh 90 parts of electrode material, 5 parts of conductive agent and 5 parts of binder (graphene and activated carbon), carbon nanotubes, CMC and SBR, (CMC:SBR=2:3, SBR is 50% emulsion). After the CMC was dissolved in deionized water, the electrode material was added and stirred for 1 hour, then the SBR emulsion was added, and the stirring was continued for 2 hours, and the slurry was allowed to stand for defoaming. The uniformly mixed slurry was coated on...
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Abstract
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