Enabling reversible redox reactions in electrochemical cells using protected LiAl intermetallics as lithium metal anodes.

ABSTRACT: Rechargeable electrochemical cells with metallic anodes are of increasing scientific and technological interest. The complex composition, poorly defined morphology, heterogeneous chemistry, and unpredictable mechanics of interphases formed spontaneously on the anodes are often examined but rarely controlled. Here, we couple computational studies with experimental analysis of well-defined LiAl electrodes in realistic electrochemical environments to design anodes and interphases of known composition. We compare phase behavior, Li binding energies, and activation energy barriers for adatom transport and study their effects on the electrochemical reversibility of battery cells. As an illustration of potential practical benefits of our findings, we create cells in which LiAl anodes protected by

SUBMITTER: Kim MS 

PROVIDER: S-EPMC6814371 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature