DEVELOPMENT OF POLYMER ELECTROLYTES WITH HIGH IONIC CONDUCTIVITY BASED ON CLAY MATERIALS
Authors
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Ye.Zh. Ussipbekova
Al-Farabi Kazakh National University, Almaty, Kazakhstan
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G.A. Suleimenova
Al-Farabi Kazakh National University, Almaty, Kazakhstan
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G.A. Seilkhanova
Al-Farabi Kazakh National University, Almaty, Kazakhstan
DOI:
https://doi.org/10.55956/QBVJ3910Keywords:
separator membrane, fillers, ion transport, ion conductivity, battery, chemical current sourceAbstract
Currently, solid electrolytes are more widely used for lithium-ion batteries than traditional liquid electrolytes. In this regard, composite membrane separators based on PVDF, DMFA, lithium salts and various fillers (kaolin, bentonite) were obtained in order to obtain membranes with high ionic permeability, safe and mechanically resistant. The following composition of the obtained membrane separators showed good results: PVDFLiF-kaolin and PVDF-Li3PO4 – kaolin, ionic conductivity σ = 9·10-3 Ohm-1 cm-1 and σ = 11.3·103Ohm-1 cm-1. The morphology of the KPE surface was studied by scanning electron microscopy. The thermophysical properties of KPI with a high ionic index were studied and thermogravimetric curves were obtained The study showed that the resulting composite membranes can be used for a chemical current source.
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