Electric bonding for battery or capacitor and composition containing the same used for electrode

A conductive adhesive and capacitor technology, which is applied in the direction of battery electrodes, conductive adhesives, adhesives, etc., can solve the problems of reducing the specific capacity of batteries or capacitors, reducing the relative mass ratio of active materials, etc., so as to reduce contact resistance and improve electric current Chemical properties, the effect of increasing the specific capacity

Inactive Publication Date: 2008-07-02
CENT SOUTH UNIV
View PDF0 Cites 42 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to improve the conductivity of the electrode, it is necessary to add a conductive agent, but this reduce

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
  • Electric bonding for battery or capacitor and composition containing the same used for electrode
  • Electric bonding for battery or capacitor and composition containing the same used for electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Put aniline monomer in 1mol / l hydrochloric acid aqueous solution, use ammonium persulfate as an initiator, react at 0-5°C by chemical oxidation method, filter and dry to obtain polyaniline doped with hydrochloric acid, and use ammonia water for reverse doping complex, forming intrinsic polyaniline. Use dodecylbenzenesulfonic acid (DBSA) to carry out functional protonation treatment, and after drying, dark green conductive polyaniline powder is obtained; polyethylene oxide (PEO) with a mass ratio of 1:1 to aniline is put into a container filled with 30ml N -In a three-neck flask of methylpyrrolidone (NMP), stir until PEO is completely dissolved; then add conductive polyaniline dissolved in NMP into the three-necked flask according to the proportion, mix and stir for 3 hours, and obtain polyaniline with a polyaniline content of 50%. - Polyethylene oxide conductive adhesive.

Embodiment 2

[0012] Add 1ml of N-methylpyrrolidone solution to the substances shown in the following mass percentages, and mix to form a conductive adhesive.

[0013] Polyaniline electronically conductive polymer 35

[0014] Polyethylene oxide ion-conducting polymer 60

[0015] Conductive agent 1

[0016] Auxiliary 4

Embodiment 3

[0018] Add 1ml of N-methylpyrrolidone solution to the substances shown in the following mass percentages, and mix to form a conductive adhesive.

[0019] Polyaniline electronically conductive polymer 50

[0020] Polyethylene oxide ion-conducting polymer 40

[0021] Conductive agent 5

[0022] Auxiliary 5

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 battery or conductive adhesive applied to a capacitor and an electrode composition; the composition contains the conductive adhesive. According to the percentage of total mass, the conductive adhesive consists of 10-30 percent of matrix and 70-90 percent of solvent; the matrix is a composite, which essentially contains 30-60 percent of electronic conductive polymer and 40-70 percent of ion conductive polymer by mass ratio. The electronic conductive polymer is a homopolymer or copolymer and polymerized by at least one aromatic monomer with a conjugate structure; the ion conductive polymer is a polyether or a homopolymer or copolymer containing dissociative polar groups. Since the adhesive has the performance of electronic or ion conductive, the consumption of conductive agent can be reduced, or the additional conductive agent can not be needed; therefore, specific capacity of the battery and the capacitor can be increased; the contacting resistance among active materials and between the active materials and current collector can be reduced, thus improving chemical performance of the battery and the capacitor.

Description

technical field [0001] This invention relates to binders for batteries and capacitors. Background technique [0002] In the manufacturing process of batteries and capacitors, it is necessary to use binders to bind and process electrode active materials. Although many binders, such as polyvinylidene fluoride (PVDF) and polytetrafluoroethylene (PTFE), have been used in the manufacturing process of batteries and capacitors, none of these existing binders has conductive properties. In order to improve the conductivity of the electrode, it is necessary to add a conductive agent, but this reduces the relative mass ratio of the active material, thus reducing the specific capacity of the battery or capacitor. Contents of the invention [0003] The object of the present invention is to provide a new type of conductive adhesive for batteries or capacitors, aiming at the non-conductivity and performance defects of the existing adhesives in application. Due to the electronic and ion...

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): C09J9/02C09J171/00C09J133/20C09J133/02C09J175/04H01M4/62
CPCY02E60/10
Inventor 潘春跃王丽君唐新村
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap