《Modulating electrolyte solvation structure with Fe-Embedded carbon matrix substrates for robust lithium-metal plating》

The practical application of lithium metal as an anode faces challenges such as the uncontrollable growth of lithium dendrites and significant volume expansion, which can lead to battery short circuits and failure. In this study, we synthesized a porous Fe@C material through the pyrolysis of Fe-based metal-organic frameworks (MOFs) and used it as a substrate for lithium metal plating. Increased anion participation within the Fe@C pores leads to the formation of an anion-derived solid electrolyte interface (SEI). The Fe matrix serves as nucleation sites, while the pore structure optimizes the electrolyte composition, effectively guiding Li deposition and inhibiting dendrite formation. This approach demonstrates excellent electrochemical performance and extended cycling life, offering a promising strategy for stable lithium metal anodes.