Carbonate Solvents and Ionic Liquid Mixtures as an Electrolyte to Improve Cell Safety in Sodium-Ion Batteries

Table 2

The activation energy of the mixed electrolytes EC-PC (1 : 1) + x wt.% EMI-TFSI + 1 M NaTFSI.

Electrolytes (EMI-TSFI as co-solvent)	Ea (J·mol^−1)
EC-PC + 1 M NaTFSI	1812
EC-PC + 10 wt.% IL + 1 M NaTFSI	1927
EC-PC + 20 wt.% IL + 1 M NaTFSI	2097
EC-PC + 25 wt.% IL + 1 M NaTFSI	2147
EC-PC + 30 wt.% IL + 1 M NaTFSI	2219
EC-PC + 20 wt.% IL + 2 wt.% FEC + 1 M NaTFSI	1832
EC-PC + 25 wt.% IL + 2 wt.% FEC + 1 M NaTFSI	1928
EC-PC + 30 wt.% IL + 2 wt.% FEC + 1 M NaTFSI	2011
EC-PC + 50 wt.% IL + 1 M NaTFSI	2320