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Table 1 Some band assignments for triflate species

From: Polystyrene-Al2O3 composite solid polymer electrolyte for lithium secondary battery

Band Wave number (cm-1) Assignment
νs(SO3) 1,032 Free Tf- ions, solvent-separated pairs
  1,040 Ion pairs (LiTf), LiTf2-, LiTf32-
  1,051 Li2Tf+ aggregate
  1,062 Li3Tf2+ aggregate