Lithium-ion hybrid supercapacitor with long service lifetime
A supercapacitor, lithium-ion technology, applied in hybrid capacitors, hybrid capacitor electrodes, hybrid capacitor separators, etc., can solve problems such as poor life of lithium-ion hybrid supercapacitors, and achieve high power performance, high power density, and long cycle life. Effect
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Embodiment 1
[0037] Place the niobium oxide in a tube furnace and raise the temperature to 700°C at a heating rate of 1~5°C / min, in the inert gas Ar and NH 3 Insulated in the mixed atmosphere of the gas for 3 hours, and then taken out after natural cooling to obtain porous NbN, the NH in the mixed gas 3 The content is 30%.
[0038] Mix activated carbon, acetylene black, and polytetrafluoroethylene emulsion at 85wt%, 10wt%, and 5wt%, and coat them on metal aluminum foil, roll and dry the aluminum foil coated with electrode materials, and then cut it into a positive electrode sheet;
[0039] Mix porous NbN, graphite powder and polytetrafluoroethylene emulsion at 80wt%, 15wt%, and 5wt%, and then coat them on copper foil, roll and dry the copper foil coated with electrode materials, and then cut it into a negative electrode sheet;
[0040] Put the negative electrode sheet into a detachable battery, use Li sheet as the counter electrode and reference electrode, charge and discharge 10 times at...
Embodiment 2
[0044] Place the niobium oxide in a tube furnace and raise the temperature to 800°C at a heating rate of 2°C / min, in an inert gas N 2 and NH 3 Insulated in the mixed atmosphere of the gas for 3 hours, and then taken out after natural cooling to obtain porous NbN, the NH in the mixed gas 3 The content is 25%.
[0045] Mix carbon nanotubes, carbon black, and polytetrafluoroethylene emulsion at 85wt%, 5wt%, and 10wt%, and then coat them on metal aluminum foil, roll and dry the aluminum foil coated with electrode materials, and then cut it into a positive electrode sheet;
[0046] Mix the porous NbN, carbon black and polytetrafluoroethylene emulsion at 85wt%, 10wt%, and 5wt%, and then coat them on the copper foil, roll and dry the copper foil coated with the electrode material, and then cut it into a negative electrode sheet;
[0047] Put the negative electrode sheet into a detachable battery, use Li sheet as the counter electrode and reference electrode, charge and discharge 10...
Embodiment 3
[0051] Place the niobium oxide in a tube furnace and raise the temperature to 900°C at a heating rate of 1°C / min, in the inert gas Ar and NH 3 In the mixed atmosphere of NbN, the porous NbN can be obtained after natural cooling, and the NH in the mixed gas 3 The content is 40%.
[0052] Mix mesoporous carbon, graphite and polytetrafluoroethylene emulsion at 87.5wt%, 5wt%, and 7.5wt%, and then coat them on the metal aluminum foil, roll and dry the aluminum foil coated with the electrode material, and then cut it into a positive electrode sheet;
[0053] Mix porous NbN, graphite and polytetrafluoroethylene emulsion at 80wt%, 12.5wt%, and 7.5wt%, and then coat them on copper foil, roll and dry the copper foil coated with electrode materials, and then cut it into a negative electrode sheet;
[0054] Put the negative electrode sheet into a detachable battery, use Li sheet as the counter electrode and reference electrode, charge and discharge 10 times at a low current density of 0....
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