While the layer forming on the graphite surface is expected to primarily consist of sodium cations and intact triflate anions, with the triflate anions adsorbed in a perpendicular arrangement relative to the surface (as discussed in relation to Fig. ), adsorption on the sodium metal surface is likely to yield a more disordered and heterogeneous layer, characterized by a notable presence of decomposed fluorine atoms and other potential anion decomposition products. Such characteristics could effectively contribute to the formation of a smooth layer covering the sodium surface, potentially mitigating dendrite growth, a critical challenge in sodium metal electrodes . Although the disordered nature of the resulting interfacial layer may hinder ion transport within this region, potentially affecting the sodium intercalation process, the weakened cation-anion electrostatic attractions within this region (as discussed in relation to Fig. ) can effectively contribute to reducing overall interfacial resistance, thereby facilitating sodium conductivity.