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Imaging solid-electrolyte interphase dynamics using operando reflection interference microscopy
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DOI：10.1038/s41565-023-01316-3.png)
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The quality of the solid-electrolyte interphase is crucial for the performance of most battery chemistries, but its formation dynamics during operation are not well understood due to a lack of reliable operando characterization techniques. Herein, we report a dynamic, non-invasive, operando reflection interference microscope to enable the real-time imaging of the solid-electrolyte interphase during its formation and evolution processes with high sensitivity. The stratified structure of the solid-electrolyte interphase formed during four distinct steps includes the emergence of a permanent inner inorganic layer enriched in LiF, a transient assembly of an interfacial electrified double layer and a consequent emergence of a temporary outer organic-rich layer whose presence is reversible with electrochemical cycling. Reflection interference microscope imaging reveals an inverse correlation between the thicknesses of two interphasial subcomponents, implying that the permanent inorganic-rich inner layer dictates the organic-rich outer layer formation and lithium nucleation. The real-time visualization of solid-electrolyte interphase dynamics provides a powerful tool for the rational design of battery interphases. Reflection interference microscopy provides dynamic, non-invasive, operando imaging capabilities that enable the solid-electrolyte interphase formation and evolution of a battery to be mapped in real time with high sensitivity.
Keyword:
LITHIUM METAL
PROPYLENE CARBONATE
IN-SITU
BATTERY
GRAPHITE
ANODES
CHALLENGES
INTERFACES
DEPOSITION
STORAGE
期刊
IF:
34.9
论文数:
4.8K
被引数:
8.8W
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引用论文
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