Hybrid super capacitor and manufacturing method thereof

A supercapacitor and capacitor technology, which is applied in the manufacture of hybrid/electric double layer capacitors, hybrid capacitor electrodes, hybrid capacitor electrolytes, etc., can solve the problem of low energy density of capacitors, and achieve easy industrial application, large capacity, and small internal resistance Effect

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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a hybrid supercapacitor and its preparation method for the problem of low capacitor energy density

Method used

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  • Hybrid super capacitor and manufacturing method thereof
  • Hybrid super capacitor and manufacturing method thereof
  • Hybrid super capacitor and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Mix activated carbon, acetylene black, and polytetrafluoroethylene emulsion at 85 wt%, 10 wt%, and 5 wt%, and coat them on the foamed nickel sheet. Roll the coated nickel foamed sheet with the electrode material and dry it to make a positive electrode. slices; the Fe 2 o 3 Powder, graphite powder and polytetrafluoroethylene emulsion were mixed uniformly at 80 wt%, 15 wt%, and 5 wt%, and then coated on the foam nickel sheet, and the nickel foam sheet coated with the electrode material was rolled and dried and then cut into a negative electrode sheet The positive electrode, the diaphragm and the negative electrode are stacked in sequence to form a compact structure, injecting 1-ethyl-3 methylimidazolium tetrafluoroborate electrolyte, leading out the positive electrode lead and the negative electrode lead, and packaging the shell to form a capacitor.

[0033] The working voltage of the capacitor in this example is 4V, the measured specific capacitance is 40.5 F / g, and the...

Embodiment 2

[0035] Graphene, acetylene black and polytetrafluoroethylene emulsion were mixed uniformly at 90 wt%, 5 wt%, and 5 wt%, and then coated on the foamed nickel sheet, and the foamed nickel sheet coated with the electrode material was rolled and dried and then cut into Positive plate; the Fe 2 o 3 / Graphene composite material, acetylene black and polytetrafluoroethylene emulsion are mixed uniformly at 60 wt%, 30 wt%, 10 wt%, and then coated on the foamed nickel sheet, and the foamed nickel sheet coated with the electrode material is rolled and dried before cutting Make a negative electrode sheet; stack the positive electrode, diaphragm and negative electrode in sequence to form a compact structure, inject 1-ethyl-3 methylimidazolium hexafluorophosphate electrolyte, lead out the positive electrode lead and negative electrode lead, and package the outer shell to form a capacitor.

[0036] The working voltage of the capacitor in this example is 4V, the measured specific capacit...

Embodiment 3

[0038] Mesoporous carbon, acetylene black and polytetrafluoroethylene emulsion were mixed uniformly at 85 wt%, 10 wt% and 5 wt%, and then coated on metal aluminum foil, and the aluminum foil coated with electrode material was rolled and dried and cut into positive electrodes slices; the Fe 2 o 3 / Activated carbon composite material, acetylene black and polytetrafluoroethylene emulsion are mixed uniformly at 40 wt%, 50 wt% and 10 wt%, and then coated on the foamed nickel sheet, and the foamed nickel sheet coated with the electrode material is rolled and dried and then cut into Negative electrode sheet: stack the positive electrode, diaphragm and negative electrode in sequence to form a compact structure, inject 1,3-dimethylimidazolium tetrafluoroborate electrolyte, lead out the positive electrode lead and negative electrode lead, and package and assemble the capacitor into a capacitor.

[0039] The working voltage of the capacitor in this example is 4V, the measured specif...

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Abstract

The invention discloses a hybrid super capacitor and a manufacturing method thereof. According to the hybrid super capacitor and the manufacturing method thereof, a pseudo-capacitor mechanism and an electric double-layer capacitor mechanism are coordinately combined in an energy storage device, carbon materials are used as positive electrode electroactive materials, iron oxide materials are used as negative electrode electroactive materials, ionic liquid is used as electrolyte, and the hybrid super capacitor is assembled. The hybrid super capacitor has the double characteristics of an electric double-layer capacitor and a pseudo-capacitor and has the advantages of being high in charging and discharging speed, large in power density, small in internal resistance, long in cycle life and the like, and the hybrid super capacitor also has the advantages of being high in capacity, high in average voltage and large in energy density.

Description

technical field [0001] The invention relates to a hybrid supercapacitor and a preparation method thereof. Background technique [0002] Supercapacitor is a new type of energy storage device, which belongs to the standard full series of low-carbon economic core products. Its power density is much higher than that of lithium batteries. The advantage is that it has excellent pulse charge and discharge performance and fast charge and discharge performance, and also has the characteristics of wide operating temperature range, safety, and no pollution. It can be used in electric vehicles, hybrid vehicles, elevators, auxiliary power supplies, wind energy and solar energy Fields such as renewable energy power generation have important application value, and have become the most promising green power source in this century, and are expected to replace traditional batteries in some fields. However, the energy density of supercapacitors is still relatively low compared with lithium-io...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/30H01G11/38H01G11/46H01G11/62H01G11/84
CPCY02E60/13H01G11/30H01G11/38H01G11/46H01G11/62H01G11/84
Inventor 阎兴斌郎俊伟孙世雄薛群基
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