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Tracking Lithium Ions via Widefield Fluorescence Microscopy for Battery Diagnostics
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posted on 2017-07-12, 00:00 authored by Nicolas
A. Padilla, Morgan T. Rea, Michael Foy, Sunil P. Upadhyay, Kyle A. Desrochers, Tyler Derus, Kassandra A. Knapper, Nathanael H. Hunter, Sharla Wood, Daniel A. Hinton, Andrew C. Cavell, Alvaro G. Masias, Randall H. GoldsmithDirect tracking of lithium ions with
time and spatial resolution
can provide an important diagnostic tool for understanding mechanisms
in lithium ion batteries. A fluorescent indicator of lithium ions,
2-(2-hydroxyphenyl)naphthoxazole, was synthesized and used for real-time
tracking of lithium ions via widefield fluorescence microscopy. The
fluorophore can be excited with visible light and was shown to enable
quantitative determination of the lithium ion diffusion constant in
a microfluidic model system for a plasticized polymer electrolyte
lithium battery. The use of widefield fluorescence microscopy for
in situ tracking of lithium ions in batteries is discussed.