A metal conductive material used as a negative electrode of a lanthanum ion hybrid supercapacitor, the lanthanum ion hybrid supercapacitor and a preparation method of the lanthanum ion hybrid supercapacitor
A technology of supercapacitors and lanthanum ions, which is applied in the direction of hybrid capacitor current collectors, hybrid capacitor electrodes, and hybrid capacitor electrolytes. It can solve the problems of limiting the energy density of hybrid supercapacitors, high cost of hybrid supercapacitors, and high production costs. Rich, effective mass transfer/load transfer, and the effect of reducing self-weight
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Embodiment approach
[0128] As a preferred embodiment, the preparation method of lanthanum ion hybrid supercapacitor comprises the following steps:
[0129] a) Preparing the negative electrode: cutting the metal, alloy or metal composite into the required size, cleaning and drying the surface to obtain the negative electrode;
[0130] b) preparing the electrolyte: dissolving the lanthanum salt in a non-aqueous solvent, and fully mixing to obtain the electrolyte;
[0131] c) Prepare the diaphragm: cut the diaphragm into the required size as the diaphragm;
[0132] d) Prepare the positive electrode: add the positive electrode active material, conductive agent and binder into the solvent in proportion and fully mix to form a positive electrode material slurry; evenly coat the positive electrode material slurry on the surface of the positive electrode current collector to form a positive electrode active material layer, and dry After pressing and cutting, the positive electrode of the required size i...
Embodiment 1
[0140] A lanthanum ion hybrid supercapacitor includes a negative electrode, a diaphragm, an electrolyte and a positive electrode.
[0141] Prepare the positive electrode of the capacitor: Add 0.8g of activated carbon (AC), 0.1g of conductive carbon black, and 0.1g of polyvinylidene fluoride to 2mL of N-methylpyrrolidone, grind thoroughly to obtain a uniform slurry; then evenly coat the slurry on the surface of the aluminum foil , dried under vacuum at 80°C for 12 hours. Cut the electrode sheet obtained by drying into a disc with a diameter of 10 mm, compact it with a hydraulic press (10 MPa, 10 s), and place it in a glove box as the positive electrode of the battery for later use.
[0142] Preparation of the negative electrode of the capacitor: take a Zn foil with a thickness of 100 μm, cut it into a disc with a diameter of 12 mm, clean it with acetone and ethanol, dry it and place it in a glove box as a negative electrode collector for later use.
[0143] Preparation of elec...
Embodiment 2-12
[0147] The preparation process of the lanthanum ion hybrid supercapacitor of embodiment 2-12 and embodiment 1 is except that the metal foil used when preparing the negative electrode is different, and all other steps and materials used are the same, and the lanthanum ion of embodiment 2-12 is mixed simultaneously The energy storage performance of the supercapacitor was tested and compared with the performance of Example 1. The test includes energy density and specific capacitance. The specific test method is as follows:
[0148] Cycle charge and discharge: cycle charge and discharge are carried out on CT2001C-001 blue electric battery cycle test system, and the standard capacity of the electrode is tested by charging and discharging at a rate of 100mA / g, the specific capacity of the material = current * time / sample mass, the energy density of the material =specific capacity of the material*plateau voltage of the battery, the charging and discharging conditions depend on the ...
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Abstract
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