Analysis of Ionic Transport and Electrode Interfacial Reaction, and NMR One-Dimensional Imaging of Ether-Based Polymer Electrolytes

Polyether-based polymer electrolytes containing an M x [N(SO 2 CF 3 ) ] salt ( = 1 for Li and Na, 0.5 Mg Ca) were investigated their thermal stabilities ionic conductivities, owing to high electrochemical stability interfacial compatibility at electrodes as the electrolyte layer of all-solid-state batteries. The properties / Na metal electrode interface also explored. conductivity exhibited a strong correlation with Coulombic interaction energy originating from cationic-radii charge density derived cation’s valance number. random copolymers poly(ethyleneoxide) poly(propyleneoxide) (P(EO/PO)) increased slightly decreasing cationic radii decreased appreciably valence In [metallic ∣ metallic electrode] cells, resistances apparent activation energies interfaces tended be higher systems than systems. calculated + transport number local maximum value when [Na]/[O] ∼0.04. To further evaluate diffusive active ions, nuclear magnetic resonance one-dimensional imaging was performed. self-diffusion coefficient TFSA confirmed correspond cation in P(EO/PO)-M electrolytes.