Grain Boundaries Control Lithiation of Solid Solution Substrates in Lithium Metal Batteries.

ABSTRACT: The development of sustainable transportation and communication systems requires an increase in both energy density and capacity retention of Li-batteries. Using substrates forming a solid solution with body-centered cubic Li enhances the cycle stability of anode-less batteries. However, it remains unclear how the substrate microstructure affects the lithiation behavior. Here, a correlative, near-atomic scale probing approach is deployed through combined ion- and electron-microscopy to examine the distribution of Li in Li-Ag diffusion couples as model system mimicking high current densities. It is revealed that Li regions with over 93.8% at.% nucleate within Ag at random high-angle grain boundaries, whereas grain interiors are not lithiated. The role of kinetics and mechanical constraint f

SUBMITTER: Aota LS 

PROVIDER: S-EPMC11789589 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature