Characterization and Quantification of Depletion and Accumulation Layers in Solid-State Li⁺ -Conducting Electrolytes Using In Situ Spectroscopic Ellipsometry.

ABSTRACT: The future of mobility depends on the development of next-generation battery technologies, such as all-solid-state batteries. As the ionic conductivity of solid Li⁺ -conductors can, in some cases, approach that of liquid electrolytes, a significant remaining barrier faced by solid-state electrolytes (SSEs) is the interface formed at the anode and cathode materials, with chemical instability and physical resistances arising. The physical properties of space charge layers (SCLs), a widely discussed phenomenon in SSEs, are still unclear. In this work, spectroscopic ellipsometry is used to characterize the accumulation and depletion layers. An optical model is developed to quantify their thicknesses and corresponding concentration changes. It is shown that the Li⁺ -deplet

SUBMITTER: Katzenmeier L 

PROVIDER: S-EPMC11468716 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature