fig11

Figure 11. The effect of VC on SIB cathodes. (A) Illustration of the function of VC additives on the surface of Na₃V₂(PO₄)₃@C cathode; (B) XPS spectra of CEI layer covered on Na₃V₂(PO₄)₃@C cathode cycled in different electrolytes (0% vol. vs. 5% vol. VC) after the first cycle, Reproduced from ref^[131], copyright 2021 Elsevier; (C) Ex situ HRTEM images of NVP and PB electrodes cycled in 1M NaPF₆-EC/DEC and 1.2M NaTFSI-TMP/BTFE/VC electrolyte, Reproduced from ref^[132], copyright 2021 Wiley; (D) Amount of manganese dissolution detected by immersing Na₂MnSiO₄ electrodes in the respective electrolytes (with 0% vol. vs. 5% vol. VC) at room temperature for 30 days, Reproduced from ref^[133], copyright 2017 Elsevier. BTFE: Bis(trifluoromethanesulfonyl)imide; CEI: cathode electrolyte interphase; DEC: diethyl carbonate; NaTFSI: sodium bis(trifluoromethanesulfonyl)imide; SIB: sodium-ion battery; TMP: trimethyl phosphate; VC: vinylene carbonate; XPS: X-ray photoelectron spectroscopy.