Home > Publications database > Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface: Redistribution of Lithium among Interconnected Particles |
Journal Article | FZJ-2020-02001 |
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2020
ACS Publications
Washington, DC
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Please use a persistent id in citations: http://hdl.handle.net/2128/25314 doi:10.1021/acsaem.0c00543
Abstract: With operando transmission electron microscopy visualizing solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of few hundreds of nanometer. A facile lithium redistribution that occurs between interconnected active particles indicates that lithium does not necessarily become isolated in individual particles due to loss of a direct contact. Our results have implications for the design of all-solid-state battery electrodes with improved capacity retention and cyclability.
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