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

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...

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 reduces the relative mass ratio of the active material, thus reducing the specific capacity of the battery or capacitor

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