Composite electrode, supercapacitor and preparation method thereof
A technology for supercapacitors and composite electrodes, which is applied in the manufacture of hybrid/electric double layer capacitors and hybrid capacitor electrodes, etc., can solve problems such as limitations, and achieve the effects of high power density, good stability, and high capacity density
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Embodiment 1
[0035] A composite electrode, including a current collector, and a composite material layer is provided on the outer surface of the current collector;
[0036] Described composite material comprises following material components and fully mixes, and the ratio of its weight part is:
[0037] Semiconductor materials, 10-70 parts
[0038] Conductive matrix material, 10-70 parts
[0039] Conductive adhesive, 10-70 parts
[0040] In this example, the semiconductor material includes black phosphorus or phosphorene or a combination of two in any proportion, and the total number of parts is 10-70 parts.
[0041] In this example, the conductive matrix material includes one or more combinations in any proportion of "conductive polymer material", "metal oxide with pseudocapacitive properties" or "carbon active material", that is, only one It can be any two kinds, or all three kinds, and the total number of copies is 10 to 70 copies.
[0042] Here, the conductive polymer materials inc...
Embodiment 2
[0051] Such as figure 1As shown, a supercapacitor includes a positive pole 1, a negative pole 2, a diaphragm 3 and an electrolyte 4, the diaphragm 3 is arranged between the positive pole 1 and the negative pole 2, and the electrolyte 4 is filled between the positive pole 1 and the diaphragm 3; the negative pole 2 and the diaphragm 3 Electrolyte 4 is filled between them; the positive electrode 1 and / or negative electrode 2 adopts the composite electrode described in Embodiment 1, generally the positive electrode 1 selects the composite electrode, and the negative electrode 2 can directly select the material of the current collector itself, such as copper, aluminum, Nickel, stainless steel, carbon, graphite, conductive polymers, graphene, carbon nanotubes, carbon fibers or carbon gels. Of course, composite electrodes can also be used for both the positive electrode 1 and the negative electrode 2 .
[0052] In this example, the said diaphragm 3 is polypropylene microporous membr...
Embodiment 3
[0055] A method for preparing a supercapacitor, comprising:
[0056] Step A, the preparation of the composite electrode material of positive electrode 1 and / or negative electrode 2, the composite material is taken in proportion and fully mixed into a slurry, and the slurry is coated on the surface of the current collector to make a composite of positive electrode 1 and / or negative electrode 2 electrode material;
[0057] Coating as used herein includes dipping, coating, spraying, electrodeposition, printing or printing. The coating technique is the same as the prior art.
[0058] Step B, the assembly of the supercapacitor, a separator 4 is arranged between the positive electrode 1 and the negative electrode 2, filled with electrolyte, and assembled into a supercapacitor in the form of lamination or winding. The assembly method is the same as the existing assembly method.
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