Composite electrostatic spinning fiber diaphragm material with doped zirconia and compounded polyurethane

Abstract

The invention discloses a composite electrostatic spinning fiber diaphragm material with doped zirconia and compounded polyurethane. The composite electrostatic spinning fiber diaphragm material is prepared from, by weight parts, 80-83 parts of polyvinylidene difluoride, 20-22 parts of polymethyl methacrylate, an appropriate amount of DMF, 2-3 parts of nano boehmite, 0.8-1 part of silane coupling agent KH550, an appropriate amount of deionized water, 2-3 parts of graphite oxide, 2-3 parts of nano zirconia, 3-4 parts of polyethylene glycol, 0.8-1 part of polyvinylpyrrolidone and 2-3 parts of polyurethane. Nano zirconia, graphite oxide and polyurethane and the like are compounded and added into spinning solution, a fiber membrane is obtained through electrostatic spinning, the composite electrostatic spinning fiber diaphragm material has good breaking strength and electrochemical stability, and the hydrophilicity and permeability of the fiber membrane are greatly improved. The fiber membrane can serve as a capacitor diaphragm material, is safe and hydrophilic, has wettability, is high in liquid absorption rate, can meet the high-performance capacitor requirements, and is good in stability.

Description

technical field [0001] The invention relates to the technical field of supercapacitors, in particular to a composite electrospun fiber diaphragm material doped with zirconia and compounded with polyurethane. 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 se...

AI Technical Summary

Problems solved by technology

"Preparation of PAN / PVDF-HFP supercapacitor separator by electrospinning method and its mechanical properties" The membrane is subjected to hot-pressing treatment. Although the performance of the obtained membrane material is improved compared with that of the commercial membrane, it still has the disadvantages of low strength, short life, and low output. It is necessary to further modify the electrospun membrane material to improve the performance of the membrane. thermal stability, mechanical properties