Fig. 3: Electrolyte properties aiming at high voltage cathodes. | Nature Communications

Fig. 3: Electrolyte properties aiming at high voltage cathodes.

From: Strong Lewis-acid coordinated PEO electrolyte achieves 4.8 V-class all-solid-state batteries over 580 Wh kg−1

Fig. 3: Electrolyte properties aiming at high voltage cathodes.

a Electrostatic potential distribution of the typical coordination structure in PEO-LiTFSI and PEO-Mg-Al-LiTFSI electrolytes. b The HOMO energy values of each component. c Linear sweep voltammetry curve of PEO-LiTFSI and PEO-Mg-Al-LiTFSI electrolytes, with the threshold current of 2.5 µA. d The binding energy between Li and the typical coordination structure in PEO-LiTFSI and PEO-Mg-Al-LiTFSI electrolytes. e The ionic conductivities of different electrolytes at different temperatures. f The ion diffusion coefficient of anions and cations in electrolytes. g Average Li-O, Mg-O, and Al-O coordination numbers from MD simulations of PEO-LiTFSI and PEO-Mg-Al-LiTFSI electrolytes. h Chronoamperometry curve for the PEO-Mg-Al-LiTFSI electrolyte with a polarization voltage of 10 mV and electrochemical impedance spectroscopy (EIS) plots before and after the polarization (inset).

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