Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Graphene polypyrrole based electrode material for pseudocapacitive supercapacitor

A technology of supercapacitors and polypyrrole, which is applied in the manufacture of hybrid capacitor electrodes and hybrid/electric double-layer capacitors, etc., can solve the problems affecting device stability and cycle life, poor electrical conductivity, and low power density of pseudocapacitive supercapacitors.

Inactive Publication Date: 2015-12-09
西安岳达生物科技股份有限公司
View PDF6 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with double-layer supercapacitors, pseudocapacitive supercapacitors can achieve higher energy storage, but due to poor conductivity, the power density of pseudocapacitive supercapacitors is lower; at the same time, the electrode material is in the process of redox Irreversible phenomena will appear to a certain extent, which will affect the stability and cycle life of the device

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0011] The preparation method of the electrode material of a pseudocapacitive supercapacitor based on graphene polypyrrole: take 2 grams of graphite oxide and ultrasonically disperse it in 100ml distilled water for 1 hour, then add 2 grams of polystyrene sodium sulfonate and react at 80°C for 1 hour After cooling and filtering, a solution containing 4 grams of hydrazine hydrate was added to react at 100° C. for 1 h, and after cooling, filtered and washed to obtain graphene nanosheets.

[0012] The method of molecular adsorption is to place the obtained graphene nanosheets in 100ml aqueous solution for hydrolysis, then add 10 grams of pyrrole, stir and let it stand evenly, filter and disperse in the aqueous solution of hydrochloric acid, add dropwise 52.35 grams of ferric chloride solution at 0 After reacting at -4°C for 6 hours, washing and drying were performed to obtain an electrode material for a pseudocapacitive supercapacitor of graphene polypyrrole.

[0013] The electrod...

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

No PUM Login to View More

Abstract

The invention discloses a graphene polypyrrole based electrode material for a pseudocapacitive supercapacitor. The electrode material is prepared according to the following steps of; carrying ultrasonic dispersion on graphite oxide in distilled water for 0.5 to 1 hour, adding sodium polystyrene sulfonate and reacting for 1 to 2 hours at 60-80 DEG C, cooling, filtering, adding hydrazine hydrate and reacting for 1 hour at 100 DEG C, and cooling, filtering and washing to obtain graphene nano slices; and enabling pyrrole to be adsorbed onto the graphene nano slices by using a molecule adsorption method, dispersing the adsorbed pyrrole into an aqueous solution of hydrochloric acid, dropwise adding ferric chloride solution and reacting for 4 to 6 hours at 0-4 DEG C, and washing and drying to obtain the graphene polypyrrole based electrode material for the pseudocapacitive supercapacitor. The electrode material for the pseudocapacitive supercapacitor, prepared by the invention, simultaneously has high conductivity, large specific surface and high chemical stability, and is also endowed with excellent capacitance performance.

Description

technical field [0001] The invention relates to an electrode material of a pseudocapacitance supercapacitor based on graphene polypyrrole, which belongs to the technical field of chemical materials. Background technique [0002] Pseudocapacitive supercapacitors realize charge storage through a fast and reversible redox reaction between electrode materials and electrolyte (electrolyte). At present, the electrode materials for pseudocapacitor supercapacitors that have been studied more include the following three categories: one is transition metal oxides or hydroxides, such as ruthenium dioxide, manganese dioxide and nickel hydroxide; the other is conductive polymers, including polyaniline, Polypyrrole, polythiophene, etc.; the third is other materials containing oxygen, nitrogen and sulfur functional groups. Compared with double-layer supercapacitors, pseudocapacitive supercapacitors can achieve higher energy storage, but due to poor conductivity, the power density of pseud...

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): H01G11/36H01G11/48H01G11/86
CPCY02E60/13
Inventor 花秀夫张天
Owner 西安岳达生物科技股份有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com