Operando and three-dimensional visualization of anion depletion and lithium growth by stimulated Raman scattering microscopy.

ABSTRACT: Visualization of ion transport in electrolytes provides fundamental understandings of electrolyte dynamics and electrolyte-electrode interactions. However, this is challenging because existing techniques are hard to capture low ionic concentrations and fast electrolyte dynamics. Here we show that stimulated Raman scattering microscopy offers required resolutions to address a long-lasting question: how does the lithium-ion concentration correlate to uneven lithium deposition? In this study, anions are used to represent lithium ions since their concentrations should not deviate for more than 0.1 mM, even near nanoelectrodes. A three-stage lithium deposition process is uncovered, corresponding to no depletion, partial depletion, and full depletion of lithium ions. Further analysis reveals a f

SUBMITTER: Cheng Q 

PROVIDER: S-EPMC6065384 | biostudies-literature | 2018 Jul

REPOSITORIES: biostudies-literature