Unlock instant, AI-driven research and patent intelligence for your innovation.

Polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials and preparing method thereof

A technology of polyvinylidene fluoride and hexafluoropropylene, which is applied in the field of polyvinylidene fluoride-hexafluoropropylene-based composite electrode materials and its preparation, can solve the problems of high cost, complex production process, and long production cycle of supercapacitors, and achieve The effect of small thickness, increased specific surface area, and low cost

Inactive Publication Date: 2014-01-15
SICHUAN UNIV
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Activated carbon-based capacitors have a long research history, are currently commercialized to a high degree, and have the most mature technology, but their production process is complicated, the production cycle is long, and the specific capacity is low.
According to reports, although conductive polymer capacitors have high power density, their specific capacity is much lower than that of carbon / carbon capacitors and metal oxide capacitors; although metal oxides or hydrated metal oxides, such as ruthenium oxide and nanocarbon tubes can produce great energy density and power density, however, the cost of supercapacitors made with these electrode materials is much higher than other materials

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
  • Polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials and preparing method thereof
  • Polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials and preparing method thereof
  • Polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The polyvinylidene fluoride-hexafluoropropylene and K 2 CO 3 Weigh according to the ratio of 70% by mass: 30%, mix the weighed raw materials evenly, and dry to make a mixed powder; then use 10mL DMF as a solvent to fully dissolve the mixed powder to form a mixed solution; mix the mixed solution evenly coated on the graphite paper substrate, and placed in a constant temperature oven for 24 hours, then taken out, at this time a layer of polyvinylidene fluoride-hexafluoropropylene composite film was formed on the graphite paper; the polyvinylidene fluoride - Hexafluoropropylene composite film was heat-treated at 220°C for 60 minutes, and then soaked in a saturated KOH solution for 30 minutes to prepare polyvinylidene fluoride-hexafluoropropylene for making supercapacitor electrodes based composite membrane electrode materials. Process the polyvinylidene fluoride-hexafluoropropylene-based composite membrane electrode material into a square sheet of the required size; then...

Embodiment 2

[0046] The polyvinylidene fluoride-hexafluoropropylene and K 2 CO 3 Weigh according to the ratio of 99% by mass: 1%, mix the weighed raw materials evenly, and dry to make a mixed powder; then use 10mL NMP as a solvent to fully dissolve the mixed powder to form a mixed solution; mix the mixed solution evenly Coated on the aluminum foil substrate, and put it in a constant temperature oven for 24 hours and took it out, at this time a layer of polyvinylidene fluoride-hexafluoropropylene composite film was formed on the aluminum foil; the polyvinylidene fluoride-hexafluoropropylene The propylene composite film is heat-treated at 260°C for 5 minutes, and then the heat-treated composite film is soaked in a saturated KOH solution for 2 minutes to prepare a polyvinylidene fluoride-hexafluoropropylene-based composite film for making supercapacitor electrodes. electrode material. Process the composite membrane electrode material into a square sheet of the required size; then use the mi...

Embodiment 3

[0048] The polyvinylidene fluoride-hexafluoropropylene and K 2 CO 3 Weigh according to the ratio of 50% by mass: 50%, mix the weighed raw materials evenly, and dry to make a mixed powder; then use 10mL DMSO as a solvent to fully dissolve the mixed powder to form a mixed solution; mix the mixed solution evenly Coated on the foamed nickel substrate, and put it in a constant temperature oven for 24 hours and then took it out, at this time a layer of polyvinylidene fluoride-hexafluoropropylene composite film was formed on the foamed nickel; the polyvinylidene fluoride- The hexafluoropropylene composite film was heat-treated at 80°C for 240 minutes, and then the heat-treated composite film was soaked in a saturated KOH solution for 600 minutes to prepare polyvinylidene fluoride-hexafluoropropylene for making supercapacitor electrodes. Composite membrane electrode materials. Process the composite membrane electrode material into a square sheet of the required size; then use a mixt...

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
capacitanceaaaaaaaaaa
capacitanceaaaaaaaaaa
capacitanceaaaaaaaaaa
Login to View More

Abstract

The invention relates to polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials for a supercapacitor electrode and a preparing method of the materials. The composite electrode material combination and the preparing method thereof are used for a flexible, buckling-type and winding-type supercapacitor. The composite electrode materials use polyvinylidene fluoride-hexafluoropropylene as the base, salt and alkali are mixed; through a physical process and a chemical process, and conductive active substance electrode materials are generated and are used in the supercapacitor electrode. The polyvinylidene fluoride-hexafluoropropylene-base composite electrode materials and the preparing method thereof are characterized in that the polyvinylidene fluoride-hexafluoropropylene-base composite materials are used as the supercapacitor electrode, active substances are not directly added; cost is low, charging and discharging speed is high, the technology is simple; the prepared supercapacitor is good in charging and discharging performance and long in cycling service life; the electrode can be machined to be in any size, the thickness is about 45-125 microns; the electrode is adaptive to the developing trend of device miniaturization, and the application range of the electrode is expanded.

Description

technical field [0001] The invention belongs to the technical field of energy storage devices, and in particular relates to a polyvinylidene fluoride-hexafluoropropylene-based composite electrode material and a preparation method thereof for preparing electrodes of flexible, button-type and winding supercapacitors. Background technique [0002] Due to the characteristics of high energy density, high power density and long cycle life, supercapacitors have become one of the research hotspots in the field of electrochemical energy storage. Supercapacitor is an environmentally friendly, irreplaceable new energy storage and energy saving device between traditional capacitors and rechargeable batteries. Compared with traditional capacitors, supercapacitors have the characteristics of high charge and discharge efficiency, high power density, long cycle life, no pollution, wide operating temperature range, and large dosage, making them widely used in electric vehicles, communication...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/48H01G11/24H01G11/86
CPCY02E60/13
Inventor 朱基亮汪忠兴孙平曾子繁张鹏宇
Owner SICHUAN UNIV