Study of the structure and electrical conductivity of lithium-conducting polymer electrolytes based on PEG-1500—LiX (X = SCN, N(CF 3 SO 2 ) 2 )

A comprehensive study of lithium-conducting polymer electrolytes based on polyethylene glycol 1500 and lithium salts (LiSCN and LiN(CF3SO2)2) was carried out using thermogravimetry, differential thermal analysis, electrometry, and vibrational spectroscopy. Their phase composition was refined, structural changes resulting from varying the concentration of lithium salts were determined, the most probable structures of complex solvate and ionic complexes were established.