THE CHOICE OF FILLERS IN THE MANUFACTURE OF SOLID COMPOSITE POLYMER ELECTROLYTES BASED ON PVDF

Abstract

Polymer electrolytes with high ionic conductivity were obtained and the properties of composite polymer electrolytes were studied in connection with the change in the composition of the film. During the study, 8 different compositions of KPE were obtained (PVDF–PEG–LiF, PVDF–PVP–LiF, PVDF–PEG–Li₂SO₄, PVDF–PVP–Li₂SO₄, PVDF–PEG–NaCl, PVDF–PVP–NaCl, PVDF–PVP–Na₂SO₄, PVDF–PEG–Na₂SO₄) based on of various fillers, the thicknesses of the resulting films were measured and the electrochemical properties were studied. The indicator of high ionic conductivity was shown by the membrane of the following composition PVDF-PEG-NaCl σ = 2,8 · 10^-2 Οм^-1 см^-1;

Morphological (SEM) and thermogravimetric (TGA) methods can be used to study the surface layer and thermal properties of the obtained solid polymer coatings. Also, the results obtained can be used in the production of lithium chemical current sources.