An Attempt to Formulate Non‐Carbonate Electrolytes for Sodium‐Ion Batteries
نویسندگان
چکیده
Non-aqueous carbonate solvents have been the main choice for development of lithium-ion batteries, and similarly most research on sodium-ion batteries performed using carbonate-based solvents. However, differences between sodium lithium – in term chemistry/electrochemistry properties as well electrode materials used open up opportunities to a new look at that attracted little attention electrolyte solvent. This work investigates wide range different solvent classes context battery electrolytes compares them performance propylene carbonate. The thirteen studied here include one or several members glymes, carbonates, lactones, esters, pyrrolidones, sulfones, alkyl phosphates. Out those, five outperforming γ-butyrolactone (GBL), γ-valerolactone (GVL), N-methyl-2-pyrrolidone (NMP), (PC), trimethyl phosphate (TMP) were further investigated additives ethylene sulfite (ES), vinylene (VC), fluoroethylene (FEC), prop-1-ene-1,3-sultone (PES), sulfolane (TMS), tris(trimethylsilyl) phosphite (TTSPI), bis(oxalato)borate (NaBOB). TMS tetraethylene glycol dimethyl ether (TEGDME) tested 1 : mixtures by volume with co-solvents; NMP, dimethoxyethane (DME), TMP. All NaPF6 salt. Primary evaluation relied electrochemical cycling full-cell consisting Prussian white cathodes hard-carbon anodes. Galvanostatic was both two- three-electrode cells, addition, cyclic linear sweep voltammetry evaluate formulations. Moreover, resistance measured anode cathode, Intermittent current interruption (ICI) technique.
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ژورنال
عنوان ژورنال: Batteries & supercaps
سال: 2021
ISSN: ['2566-6223']
DOI: https://doi.org/10.1002/batt.202000252