Sulfur defect engineering controls Li₂S crystal orientation towards dendrite-free lithium metal batteries.

ABSTRACT: Controlling nucleation and growth of Li is crucial to avoid dendrite formation for practical applications of lithium metal batteries. Li₂S has been exemplified to promote Li transport, but its crystal orientation significantly influences the Li deposition behaviors. Here, we investigate the interactions between Li and various surface structures of Li₂S, and reveal that the Li₂S(111) plane exhibits the highest Li affinity and the lowest diffusion barrier, leading to dense Li deposition. Using sulfur defect engineering for Li₂S crystal orientation control, we construct three-dimensional vertically oriented Li₂S(111)@Cu nanorod arrays as a Li metal electrode substrate and identify a substrate-dependent Li nucleation process and a facet-de

SUBMITTER: Lin JX 

PROVIDER: S-EPMC11962132 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature