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A mixed type polymer super capacitor

A supercapacitor and polymer technology, applied in the field of capacitors, can solve problems such as electrolyte leakage of supercapacitors, and achieve the effects of eliminating leakage, improving energy density, and strengthening market competitiveness.

Inactive Publication Date: 2008-07-09
SHANGHAI AOWEI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention combines the respective advantages of hybrid supercapacitors and polymer supercapacitors. On the one hand, it improves the energy density of supercapacitors, and on the other hand, it solves the safety problems of supercapacitor electrolyte leakage and gas inflation, so that it can better Used in vehicle manufacturing, electric power industry, power supply industry, communication industry, military aerospace industry and other industries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of polymer electrolyte membrane (taking polyoxyethylene membrane as an example): according to the mass ratio PEO: (EC+PC) = 1:9.6 (note: mass ratio of EC+PC mixed solution 1:1), weigh the required Next, dissolve the weighed PEO in the mixed solution of EC-PC at 40-50°C; then, according to the mass ratio of LiClO 4 : (EC+PC)=1:9.6 (note: the mass ratio of EC+PC mixture is 1:1) and weigh the required amount, then weigh the LiClO 4 Dissolve in the mixed solution of EC-PC at 40-50°C; after the two mixtures are completely dissolved, mix them, stir at 70-80°C to form a uniform colloid, and then pour it between two glass plates to form a thin layer , and then heated at 120°C under reduced pressure to remove the organic solvent, a flexible solid film can be obtained, and then cut into a specified size.

Embodiment 2

[0018] Positive sheet production: LiMn 2 o 4 , graphite powder, conductive carbon black, and PVDF in a mass ratio of 80:10:5:5, mixed with NMP to make a slurry, and then coated on a 16μ aluminum foil, dried, rolled, and cut into pieces to make a positive electrode sheet . Negative sheet production: Mix activated carbon, conductive carbon black, and PVDF at a mass ratio of 80:15:5, make a slurry with NMP, and then coat it on a 10μ copper foil, dry, roll, and cut into pieces. Negative plate. Using the polymer electrolyte membrane prepared in Example 1, stack the sheets in the manner of positive electrode sheet / polymer electrolyte membrane / negative electrode sheet, and then weld the positive electrode group of the stacked battery core on the aluminum tab, The negative electrode group is welded on the nickel lug, and the welded battery core is put into the formed aluminum-plastic film for sealing, and assembled into a polymeric supercapacitor. After the capacitor is formed, th...

Embodiment 3

[0019] Embodiment 3: Positive sheet production: LiCoO 2 , graphite powder, conductive carbon black, and PVDF in a mass ratio of 75:15:7:3, mixed with NMP to make a slurry, and then coated on a 16μ aluminum foil, dried, rolled, and cut into pieces to make a positive electrode sheet . Negative sheet production: Mix activated carbon, conductive carbon black, and PVDF at a mass ratio of 75:20:5, make a slurry with NMP, and then coat it on a 10μ copper foil, dry, roll, and cut into pieces. Negative plate. The polymer electrolyte membrane made in Example 1 is used to laminate in the manner of positive electrode sheet / polymer electrolyte membrane / negative electrode sheet, and then the positive electrode group of the stacked battery core is welded on the aluminum tab, the negative electrode The pole group is welded on the nickel tab, and the welded battery core is put into the formed aluminum-plastic film for sealing, and assembled into a polymeric supercapacitor. After the capacit...

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Abstract

The invention relates to a hybrid polymer super capacitor, including an anode flake, a cathode flake and a polymer electrolyte membrane which is arranged between the anode flake and the cathode flake, the material components of the anode flake include graphite, conductive carbon black and kynoar, the material components of the cathode flake include activated carbon or mesoporous carbon or nano carbon tube or carbon aerogel, conductive carbon black and kynoar, and the invention is characterized in that: the components of the anode flake also include lithium ion embedded compound. The invention uses the polymer electrolyte membrane to solve the problem of liquid leakage and uses the hybrid structure to greatly improve the capacity of the super capacitor, so the invention can be well applied in the occasions which need high power and high energy.

Description

technical field [0001] The invention relates to a capacitor, in particular discloses a hybrid polymer supercapacitor, which belongs to the technical field of capacitors. Background technique [0002] Supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and batteries. Compared with traditional capacitors, it has a higher electrostatic capacity, which can reach thousands of farads to 10,000 farads; it has higher power than batteries. Density and long cycle life, so it combines the advantages of traditional capacitors and batteries, and is a chemical power source with broad application prospects. It has the characteristics of high specific capacity, high power, long life, wide working temperature limit, and maintenance-free. Supercapacitors mainly use the electric double layer formed by charge separation at the electrode / electrolyte interface, or the Faraday "quasicapacitance" generated by the rapid redox reaction on the electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G9/00H01G9/155H01G9/042H01G9/058H01G9/022H01G9/028H01M10/00H01M14/00H01G11/30
CPCY02E60/13
Inventor 许检红王然鞠群苗小丽
Owner SHANGHAI AOWEI TECH DEV