Conductive modified high-molecular material for capacitor

Abstract

The invention discloses a conductive modified high-molecular material for a capacitor. The material is characterized by comprising the following components in parts by weight: 12-15 parts of nano carbon tube, 3-5 parts of polyaraylkyl phenolic resin, 2-4 parts of hexamethylene tetramine, 2-4 parts of micron conductive carbon black, 0.6-0.8 parts of nano zinc oxide, 0.8-1 part of 3-methylthiophene, 3-5 parts of glass fiber, 0.3-0.5 parts of boron carbide, 4-6 parts of ionic liquid and 8-10 parts of mixed solvent. The prepared material has unique conductivity and intrinsic mobility, is large in specific surface, has good mechanical property and glossiness, and lowers the production cost; and 3-methylthiophene and the ionic liquid are adopted, so that the prepared capacitor material has a specific volume value of about 200F / g, and still has higher specific capacity and better cycling stability during high-power discharge.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a conductive modified polymer material for capacitors. Background technique [0002] Conductive polymer materials have good electrical conductivity and electrochemical reversibility, and can be used as electrode materials for rechargeable batteries. The rechargeable battery made of Ppy, after 300 charge-discharge cycles, has no drop in efficiency and has reached commercial application value. The application of conductive polymers in solar cells has also attracted widespread attention. American scientist Jeskocheim used polypyrrole and polyoxyethylene solid dielectric film to trial-produce photovoltaic cells, which can generate a current of 1mA / cm2 and a voltage of 0.35V. Although this kind of photovoltaic cell is not as good as Si solar cells at present, the development prospects of conductive polymers are very attractive because they are light in weight, e...

AI Technical Summary

Problems solved by technology

However, since the dopant molecules are often relatively small, they are easy to diffuse out of the single-layer conductive polymer film, which affects the cycle stability of the membrane electrode capacitance.