Designing Metal Phosphide Solid-Electrolyte Interphase for Stable Lithium Metal Batteries Through Electrified Interface Optimization and Synergistic Conversion.

ABSTRACT: Regulating the nucleation and growth of Li metal is crucial for achieving stable high-energy-density Li metal batteries (LMBs) without dendritic Li growth, severe volume expansion, and "dead Li" accumulation. Herein, we present a modulation layer composed of porous SnP_0.94/CoP p-n heterojunction particles (SCP), synthesized applying the Kirkendall effect. The unique heterointerfaces in the SCP induce a fully ionized depletion region and built-in electric field. This provides strong Li affinity, additional adsorption sites, and facilitated electron transfer, thereby guiding dendrite-free Li nucleation/growth with a low Li deposition overpotential. Moreover, the strategic design of the SCP, accounting for its reaction with Li, yields electronically conductive Co, lithiophilic Li-S

SUBMITTER: Park JB 

PROVIDER: S-EPMC12204979 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature