Fig. 2. (a) MD simulation snapshots of representative solvation structures in the ZnBr2, Zn(OTf)2 and Zn(TFSI)2 electrolytes, and (b) the RDFs together with the corresponding coordination numbers of Zn2+–Br−, Zn2+–OTf− and Zn2+–TFSI−. (c) Raman spectra of H2O and the electrolytes of ZnBr2, Zn(OTf)2 and Zn(TFSI)2. (d) The fittings of O–H Raman bands in the three electrolytes by water coordinated to Zn2+, strongly H-bonded and weakly H-bonded.
