Polymer nanocomposite materials based on polypropylene glycol, LiClO4 and carbon nanotubes for electrochemical devices

Abstract

The structure, thermophysical and electrical properties of polymer nanocomposite materials with mixed ionic-electronic conductivity based on polypropylene glycol, lithium perchlorate and carbon nanotubes (MWCNTs) were studied using the methods of X-ray diffraction, differential scanning calorimetry and impedance spectroscopy. The optimal polymer/salt ratio when the electrical conductivity is the highest was determined. It was established that the introduction of MWCNTs into the polymer electrolytes leads to an increase in their electrical conductivity, improved structure and thermal properties. It is found that two types of conductivity (ionic and electronic) are coexisted in the obtained materials. These values of functional characteristics make this materials perspective for use in electrochemical sources.