Operando X-ray photoelectron spectroscopy of solid electrolyte interphase formation and evolution in Li₂S-P₂S₅ solid-state electrolytes.

ABSTRACT: Solid-state electrolytes such as Li₂S-P₂S₅ compounds are promising materials that could enable Li metal anodes. However, many solid-state electrolytes are unstable against metallic lithium, and little is known about the chemical evolution of these interfaces during cycling, hindering the rational design of these materials. In this work, operando X-ray photoelectron spectroscopy and real-time in situ Auger electron spectroscopy mapping are developed to probe the formation and evolution of the Li/Li₂S-P₂S₅ solid-electrolyte interphase during electrochemical cycling, and to measure individual overpotentials associated with specific interphase constituents. Results for the Li/Li₂S-P₂S₅ system rev

SUBMITTER: Wood KN 

PROVIDER: S-EPMC6021442 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature