Lithium ion transport at the electrode | electrolyte interface is a highly complex matter and governs the morphology of plated lithium metal. For poorly engineered interfaces, lithium dendrites will form, which can easily penetrate the electrolyte layer and lead to internal shorts of the battery cell. Furthermore, instabilities of the electrolyte material at the lithium metal surface can lead to ion-blocking interphases which will reduce the applicable currents significantly.
Therefore, in SUBLIME, we are investigating how to stabilize solid electrolytes at the interface with the lithium metal electrodes by in-situ interface characterization aided by mesoscale kinetic Monte Carlo modeling. This will enable a deeper understanding of the occurring phenomena and will lead to promising protective strategies for an improvement of solid-state batteries.
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