A conductive and sodiophilic Ag coating layer regulating Na deposition behaviors for highly reversible sodium metal batteries.

ABSTRACT: Sodium metal batteries have attracted increasing interest recently, but suffer from severe dendrite growth caused by uneven Na plating/stripping behavior, which may result in the piercing of the membrane, with short circuiting and even cause explosions. Herein, a conductive and sodiophilic Ag coating layer is introduced to regulate Na deposition behaviors for highly reversible sodium metal batteries. Ag coated Zn foil with enhanced sodiophilicity, rapid Na⁺ transfer kinetics and superior electronic conductivity guarantee the homogenized Na⁺ ion and electric field distribution. This enables remarkably low overpotentials and uniform Na plating/stripping behavior with ultrahigh Coulombic efficiency of 99.9% during 500 cycles. As expected, the enhanced electrochemical per

SUBMITTER: Chen X 

PROVIDER: S-EPMC10967012 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature