AI Article Synopsis
- * The sodium superionic conductor (NaV(PO)F-C) was tested as a cathode with various electrolyte combinations, particularly exploring binary and ternary solvent mixes with additives.
- * Results indicate that a specific electrolyte composition (1 M NaClO in propylene carbonate:dimethyl carbonate with fluoroethylene carbonate) performs best, leading to further temperature performance assessments.
Article Abstract
An immense effort has been put into developing high-performance electrodes to commercialize sodium-ion batteries, but research on developing an efficient electrolyte is lacking. This study aims to find the best carbonate-based electrolyte systems by incorporating the existing ideas reported in this field. The sodium superionic conductor (NASICON) type NaV(PO)F-C (NVPF-C) was chosen as a cathode, and its compatibility with four different carbonate-based electrolyte solutions was studied in the half-cell assembly. Additionally, full-cell assembly with hard carbon as an anode is also explored. Binary and ternary combinations of the solvents ethylene carbonate, propylene carbonate, and dimethyl carbonate were employed with and without fluoroethylene carbonate as an additive. A systematic study was performed, including the in-situ impedance technique, and to determine the compatibility. Detailed galvanostatic studies for NVPF-C based half-cells, as well as hard carbon/NVPF-C full-cells, are performed, which shows that 1 M NaClO in propylene carbonate:dimethyl carbonate + fluoroethylene carbonate is a better electrolyte composition for this assembly. Subsequently, a temperature study was carried out on this electrolyte to test its performance.
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| http://dx.doi.org/10.1016/j.jcis.2020.08.043 | DOI Listing |
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