Fig. 2: Non-corrosive ester electrolyte for rechargeable Na–Cl2 battery.
From: Harnessing organic electrolyte for non-corrosive and wide-temperature Na-Cl2 battery
a Schematic illustration of the interaction between Al3+ and C=O in ester regulated by the electron-donating and electron-withdrawing properties of the terminal group (R group in a). b Calculated electrostatic potential (ESP) maps of methyl acetate (MA), methyl dichloroacetate (MDCA), and methyl trichloroacetate (MTCA) based on –CH3, –CHCl2, and –CCl3 as the terminal group, respectively. c Photographs of the mixtures of 4 M AlCl3 and the corresponding esters in (b). MA shows a violent reaction with AlCl3, while MTCA exhibits poor solubility for AlCl3. The mixture of MDCA and AlCl3 forms a clear electrolyte without the undesirable side reactions.
