Anomalous Increase in Ionic Conductivity in Peo-Containing System Segmented Polyurethane – Segmented Oligourethane with LiClO4

Abstract

A method of obtaining a solid polymer electrolyte for lithium-ion batteries based on polyethylene oxide-containing (PEO) supramolecularly organized system segmented polyurethane – segmented oligourethane with LiClO₄(PUU-OUU-LiClO₄) is proposed. The introduction of LiClO₄ into PUU-OUU leads to an extreme increase in the glass transition temperature and ionic conductivity by 1 and 2 orders of magnitude when compared to OUU-LiClO₄ and PUU-LiClO₄ systems (up to 2.0·10^–4 S/cm at 60°C), respectively, which is associated with a change in the lithium-ion transport mechanism.