Combating Li metal deposits in all-solid-state battery via the piezoelectric and ferroelectric effects.

ABSTRACT: All-solid-state Li-metal batteries (ASSLBs) are highly desirable, due to their inherent safety and high energy density; however, the irregular and uncontrolled growth of Li filaments is detrimental to interfacial stability and safety. Herein, we report on the incorporation of piezo-/ferroelectric BaTiO₃ (BTO) nanofibers into solid electrolytes and determination of electric-field distribution due to BTO inclusion that effectively regulates the nucleation and growth of Li dendrites. Theoretical simulations predict that the piezoelectric effect of BTO embedded in solid electrolyte reduces the driving force of dendrite growth at high curvatures, while its ferroelectricity reduces the overpotential, which helps to regularize Li deposition and Li⁺ flux. Polarization reversa

SUBMITTER: Tao J 

PROVIDER: S-EPMC9564934 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature