Supercapacitor composite separator material of high mechanical strength

Abstract

The invention discloses a supercapacitor composite separator material of high mechanical strength. The supercapacitor composite separator material is prepared by the raw material of the following parts by weight: 35-40 parts of polyvinyl alcohol fiber, 33-35 parts of mekralon, 10-13 parts of polyacrylonitrile powder, 30-32 parts of acetone, 72-75 parts of N,N-dimethyl formamide, 8-10 parts of water soluble PVA fiber of 70 DEG C, a moderate amount of water, 13-15 parts of calcium carbonate, 5-7 parts of glass fiber, 7-9 parts of mica powder, 2-3 parts of oxidized polyethylene wax, 1-1.2 parts of sodium dodecyl benzene sulfonate, 2-3 parts of waterborne polyurethane emulsion, 3-4 parts of animal glue and 1-1.5 parts of polydimethylsiloxane. The processed calcium carbonate, the glass fiber and the mica powder are added in the preparation process of nonwoven fabric and evenly dispersed in slurry so that the mechanical strength of the prepared product can be further enhanced, the product is enabled to be anti-tensile and is not liable to fracture, and thus the supercapacitor composite separator material of high mechanical strength is the supercapacitor used composite separator material of excellent performance.

Description

technical field [0001] The invention relates to the technical field of capacitor diaphragms, in particular to a supercapacitor composite diaphragm material with high mechanical strength. Background technique [0002] Supercapacitor is a highly competitive energy storage device. Because it can realize fast charging, high current discharge, and has a charging life of more than 100,000 times, it plays an important role in some applications that require short-term high-rate discharge. . The power supply requirements of hybrid electric vehicles and electric vehicles have also aroused worldwide attention to supercapacitors, a new type of energy storage device. In the composition of supercapacitors, electrodes, electrolyte and separator paper play a decisive role in the performance of supercapacitors. At present, the electrodes and electrolytes of supercapacitors are research hotspots, but the research and attention on separators is not high. [0003] The separator paper of the ...

AI Technical Summary

Problems solved by technology

[0004] At present, the materials used for supercapacitor separators mainly include cellulose separator paper and traditional battery separators. High-performance separator paper is difficult to manufacture and expensive; The manufacturing technology of spun nanofiber membrane is simple, low cost, the porosity of the diaphragm is as high as 90%, and the affinity to the electrolyte is good, but the disadvantage is that the strength is not high