fig3

Figure 3. Analysis of PEO-SPEs consisting of the following lithium salts: LiC_n,nTFSI [2,2; 3,3; 4,4; 5,5; 6,6] and LiTFSI (EO:Li ratio 20:1); (A) Ionic conductivity as a function of temperature; (B) Diffusion coefficients measured by PFG-NMR and MD simulations; (C) T_Li⁺ at 70 °C calculated by different methods: PFG-NMR (blue), Bruce & Vincent (green) and MD simulations (yellow); and (D) total- and lithium-ion conductivities at 70 °C. PEO: Poly(ethylene oxide); MD: molecular dynamics; EO:Li: ethylene oxide:lithium cation; SPEs: solid polymer electrolytes; PFG-NMR: pulsed-field gradient nuclear magnetic resonance; LiC_2,2TFSI: Lithium(trifluoromethanesulfonyl)(N,N-diethylsulfamoyl)imide; LiC_3,3TFSI: lithium(trifluoro-methanesulfonyl)(N,N-dipropylsulfamoyl)imide; LiC_4,4TFSI: lithium(trifluoromethanesulfonyl) (N,N-dibutylsulfamoyl)imide; LiC_5,5TFSI: lithium(trifluoromethanesulfonyl)(N,N-dipentyl-sulfamoyl)imide; LiC_6,6TFSI: lithium(trifluoromethanesulfonyl)(N,N-dihexylsulfamoyl)-imide.