fig6

Recent research progress in the application of Na<sub>3</sub>V<sub>2</sub>(PO<sub>4</sub>)<sub>2</sub>F<sub>3</sub> cathode materials in sodium-ion batteries: synthesis, modification, and battery optimization

Figure 6. (A) The TMSPi-induced film formation process; (B) Flame test carried out with separators soaked in different electrolytes. Reproduced with permission[183]. Copyright 2024, Elsevier; (C) Galvanostatic charge-discharge (GCD) curves associated with continuous temperature testing simulating a wide range of all-weather conditions. Reproduced with permission[184]. Copyright 2024, American Chemical Society; (D) Power to electronic devices at 25 °C and -20 °C; (E) GCD curves of a battery with different bending angles at 0.1 C. Reproduced with permission[185]. Copyright 2024, Wiley; (F) V dissolution of a charged NVPF powder in EC-PC-DMC with different sodium salts at 55 °C for 21 days. Reproduced with permission[186]. Copyright 2023, Elsevier; (G) Schematic representation of solvation structure; (H) TEM image of a circulating NVPF cathode in NPP6 electrolyte (PFPN as a co-solvent in electrolyte at molar ratio of PC:PFPN = 7.5:1). Reproduced with permission[188]. Copyright 2024, Wiley -VCH. TMSPi: trimethylsilyl phosphite; NVPF: Na3V2(PO4)2F3; EC: ethylene carbonate; PC: propylene carbonate; DMC: dimethyl carbonate; TEM: transmission electron microscope; NPP6: 6th sodium-ion electrolyte formulation with PC and PFPN; PFPN: ethoxy (pentafluoro) cyclotriphosphazene.

Energy Materials
ISSN 2770-5900 (Online)
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