Ion-conductive, Thermal and Electrochemical Properties of Poly(ethylene carbonate)-Mg Electrolytes with Glyme Solution

Poly(ethylene carbonate) (PEC)-based polymer electrolytes incorporated with magnesium bis(trifluoromethanesulfonyl) imide (Mg(TFSI)2) and triethylene glycol dimethylether (triglyme, G3) were investigated for their ion-conductive, thermal, structural and electrochemical properties. The highest conductivity was 5.2 × 10−6 S cm−1 at 80 °C for 40/60 of PEC/0.5 M Mg(TFSI)2-G3 (PEC/G3-0.5 M). The addition of G3 enhanced the conductivity and Mg deposition/dissolution process by enhancing the ionic mobility and the formation of appropriate solvation structure in PEC. Poly(ethylene carbonate) (PEC)-based polymer electrolytes incorporated with magnesium bis(trifluoromethanesulfonyl) imide (Mg(TFSI)2) and triethylene glycol dimethylether (triglyme, G3) were investigated for their ion-conductive, thermal, structural and electrochemical properties. The addition of G3 enhanced the conductivity and Mg deposition/dissolution process by enhancing the ionic mobility and the formation of appropriate solvation structure in PEC.