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Download filePhotoacoustic Imaging of Lithium Metal Batteries
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posted on 06.11.2019, 21:29 authored by Huihui Liu, Yibo Zhao, Jiasheng Zhou, Ping Li, Shou-Hang Bo, Sung-Liang ChenTo
better understand and overcome the lithium (Li) dendrite problem
in Li metal batteries, great efforts have been made to reveal dendrite
growth processes using various imaging modalities. However, because
of being almost invisible to electrons and X-rays, directly imaging
Li metal with the required contrast and spatial and temporal resolutions
has always been the challenge. Here, we show that, by exploiting photoacoustic
effect, microscale-resolution three-dimensional structure of Li protrusions
inside the glass fiber separator of a Li/Li liquid electrolyte symmetric
cell can be clearly visualized with high contrast within minutes by
photoacoustic microscopy, demonstrating the potential for observing
dendrite growth.