Sodium metal batteries, known for their high theoretical specific capacity, abundant reserves,and promisinglow-temperature performance, have garnered significant attention. However, the large ionic radius of Na+and sluggish transport kinetics across the interfacial structure hinder their practical application.Previous reviews have rarely regulated electrolyte performance from the perspective of anions; as important components of the electrolyte, the regulation mechanism is not well understood. Herein, a novel anion receptor additive, 4-aminophenylboronic acid pinalol ester (ABAPE), is proposed to weaken the coupling between anions and cations and accelerateNa+transport kinetics.The results of theoretical calculations and X-ray photoelectron spectroscopy with deep Ar-ion etching demonstrate thatthe introduction of this additive alters the solvation structure of Na+, reducesthe desolvation barrier and formsa stable and dense electrode-electrolyte interface. Moreover, ABAPE forms hydrogen bonds (-NH···O/F) with H2O/HF, effectively preventing the hydrolysis of NaPF6and stabilizing acidic species. Consequently, the Na||Na symmetric cell exhibits excellent long-cycle performance of 500 h at 1 mA cm-2 and 0.5 mAh cm-2. The Na||Na3V2(PO4)3(NVP) full cell with the addition of ABAPE maintains a capacity retention of 84.29% at 1 C after1200 cycles and presents no capacity decayover 150 cycles at -40°C.
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