The interface reaction that occurs between electrodes and electrolyte is a significant factor to the degradation of batteries' electrochemical performance. One crucial avenue to enhance the electrochemical performance of sodium metal batteries (SMBs) is to construct robust inorganic-rich interphases that can effectively inhibit interface side reactions. Herein, we report and demonstrate a collaborative strategy called "Preferential AdsorptionDecomposition and Strong Binding" (ADSB) that is based on sodium fluorophosphate (Na2PO3F, safe and nontoxic, can be utilized as an anti-caries agent in toothpaste.), a multifunctional anionic additive that preferentially adsorbs on the inner Helmholtz plane (IHP), preferentially decomposes, and contributes to the solvation structure to form a multi-anion solvated sheath. Based on the ADSB strategy, the robust electrode electrolyte interphases are successfully constructed on the surface of Na4Fe3(PO4)2P2O7 (NFPP) and sodium-metal. Consequently, at an extremely high rate of 50 C, the NFPP||Na cell with Na2PO3F modified electrolyte achieves a high capacity of 60.9 mAh g-1. Furthermore, the stable interphases derived from Na2PO3F are resistant to widetemperature. At -40 degrees C, the NFPP||Na cell demonstrates a high capacity of 73.0 mAh g-1, and after 200 cycles at 60 degrees C, it achieves 84.2% capacity retention.
