Check patentability & draft patents in minutes with Patsnap Eureka AI!

Polyimide super capacitor and preparation method thereof

A supercapacitor and polyimide technology, applied in the field of capacitors, can solve the problems of small operating temperature range, poor electrochemical stability, poor thermal stability, etc., and achieve good electrochemical stability and thermal stability, and a wide operating temperature range. , the effect of improving heat resistance

Inactive Publication Date: 2012-01-04
SHENZHEN HIFUTURE ELECTRIC
View PDF4 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy density and power density of this type of organic hybrid supercapacitor are not ideal, the electrochemical stability is poor, the thermal stability is poor, and the operating temperature range is small, the cycle life of the capacitor battery is short, and it cannot meet the current people's requirements for the capacitor battery.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Polyimide super capacitor and preparation method thereof
  • Polyimide super capacitor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A kind of preparation method of polyimide supercapacitor, it comprises the following steps:

[0032] (1) Preparation of pole piece: Mix porous carbon material, conductive agent, adhesive, and solvent evenly in proportion to prepare an electrode slurry with a viscosity of 1500cps-8500cps, coat it on the current collector, and bake it Drying, rolling, slitting, and sheeting to obtain positive and negative electrodes;

[0033] (2) Preparation of battery cells: The positive and negative pole pieces are prepared into battery cells with polyimide diaphragms in a winding or superimposed manner, and the polyimide diaphragms are used to insulate and separate the pole pieces;

[0034] (3) Liquid injection encapsulation: put the positive and negative electrodes in the cell into the case, and connect the guide pins respectively, the guide pins pass through the container shell, then inject electrolyte, seal, and obtain a polyimide supercapacitor.

Embodiment 1

[0036] (1) Production of pole pieces: Mix activated carbon, conductive carbon black, adhesive, and deionized water with a total mass of 1000g in a mass ratio of 45:10:15:30, and adjust them into a uniform mixture in a vacuum mixer. The slurry, the viscosity of the slurry is 8500cps, the slurry is evenly coated on the aluminum foil, then dried at 90-100 ℃, rolled, cooled and cut, the positive electrode is cut into 98mm long, 12.5mm Wide, the negative electrode is cut to be 115mm long and 12.5mm wide, and its surface density is 90m 2 / g.

[0037] (2) Preparation of battery cells: select a polyimide diaphragm with a thickness of 20um, and stack and wind it into rolls in the order of polyimide diaphragm, positive electrode sheet, polyimide diaphragm, and negative electrode sheet.

[0038] (3) Liquid injection packaging: put the above-mentioned battery cells into an aluminum container shell with a diameter of 10 mm and a height of 20 mm, and inject electrolyte solution. The solute...

Embodiment 2

[0041](1) Production of pole pieces: Mix activated carbon with a total mass of 1000g, conductive carbon black, conductive agent, and deionized water at a mass ratio of 15:10:15:60, and adjust them into a uniform mixture in a vacuum mixer. Slurry, the viscosity of the slurry is 1500cps, the slurry is evenly coated on the aluminum foil, then dried at 90-100°C, rolled, cooled and then cut, the positive electrode is cut to 190mm long and 17.5mm wide , the negative electrode is cut to be 210mm long and 17.5mm wide, and its surface density is 92m 2 / g.

[0042] (2) Preparation of battery cells: select a polyimide separator with a thickness of 25 μm, and stack and wind it into a roll in the order of polyimide separator, positive electrode sheet, polyimide separator, and negative electrode sheet.

[0043] (3) Liquid-injection packaging: put the above-mentioned cells into an aluminum container shell with a diameter of 12.5mm and a height of 25mm, and inject electrolyte solution. The s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Viscosity rangeaaaaaaaaaa
Thicknessaaaaaaaaaa
Viscosityaaaaaaaaaa
Login to View More

Abstract

The invention particularly relates to a polyimide super capacitor. The polyimide super capacitor of the invention comprises a container shell body, an electrolyte and a cable core, wherein the cable core is sequentially coiled or stacked and encapsulated in the container shell body body in order of a polyimide septum, an anode sheet, a polyimide septum and a cathode sheet; the anode sheet and the cathode sheet are made by attaching anode and cathode slurry to collecting liquid; the anode sheet and the cathode sheet are respectively connected with a guide needle; the guide needle penetrates through the container shell body; and the anode and cathode slurry comprises the following components in percent by weight: cathode15% to 45% of porous carbon material, 0.5% to 10% of conductive agent, 1% to 15% of adhesive and 30% to 70% of solvent. The polyimide super capacitor of the invention has the energy density of 5.6wh / kg and the power density of 6500w / kg, has good electrochemical stability and thermal stability and wide utilization temperature range, and can be used in fields of electric tools, mixed power automobiles, storage of solar energy and the like.

Description

[0001] technical field [0002] The invention relates to the field of capacitors, in particular to a polyimide supercapacitor. [0003] Background technique [0004] Supercapacitor is a new type of electrochemical energy storage device between traditional capacitors and batteries. Compared with traditional capacitors, it has higher energy density, and its electrostatic capacity can reach thousands of farads to 10,000 farads. Compared with batteries, it has higher High power 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. [0005] According to different energy storage principles, supercapacitors can be divided into three categories: electric double layer capacitors (EDLC), Faraday quasi-capacitance supercapacitors and hybrid super...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01G9/02H01G9/042
CPCH01G9/02Y02T10/7022H01G11/32Y02E60/13H01G11/52H01G9/042Y02T10/70
Inventor 吕晓义李晓燕王琦桑玉贵匡晓明任金生
Owner SHENZHEN HIFUTURE ELECTRIC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com