High dielectric barium titanate porous scaffold for efficient Li metal cycling in anode-free cells.

ABSTRACT: Li metal batteries are being intensively investigated as a means to achieve higher energy density when compared with standard Li-ion batteries. However, the formation of dendritic and mossy Li metal microstructures at the negative electrode during stripping/plating cycles causes electrolyte decomposition and the formation of electronically disconnected Li metal particles. Here we investigate the use of a Cu current collector coated with a high dielectric BaTiO₃ porous scaffold to suppress the electrical field gradients that cause morphological inhomogeneities during Li metal stripping/plating. Applying operando solid-state nuclear magnetic resonance measurements, we demonstrate that the high dielectric BaTiO₃ porous scaffold promotes dense Li deposition, improves the

SUBMITTER: Wang C 

PROVIDER: S-EPMC8585873 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature