At Center for Functional Materials (CFN) of Brookhaven National Laboratory (BNL), a wide range of facilities and techniques have been developed and deployed for characterizing ionic transport and ordering in nanoscale electrochemical devices, at <i>in situ</i> or <i>operando </i>conditions. Demonstrated in this talk are a few such cases based on various electron microscopy techniques. I will discuss the use of environmental TEM/STEM for the study of electrode lithiation/delithiation processes in lithium ion batteries, and the use of low energy electron microscopy (LEEM) and photoemission electron microscopy (PEEM) for the study of ion ordering at electrode/electrolyte interface.

In situ study of ion ordering and transport by electron microscopy techniques

256th National Meeting (2018)

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