Zn-Na Alloy Interphase Engineering for Fast Kinetics and High Performance in Sodium-Ion Batteries.

||HC full cell increases from 67.62% to 80.78%, and the capacity retention after 1000 cycles improves from 56.08% to 86.93%. This design not only modifies the interface but also compensates for the active sodium loss incurred during the alloying process, significantly enhancing the interfacial performance and cycling stability of the battery and offering promising application prospects.