Lithium Transport in Epitaxial 2D and 3D Thin Films for Solid-State Batteries
Mark Huijben a
a University of Twente, MESA+ Institute for Nanotechnology, Netherlands
Materials for Sustainable Development Conference (MATSUS)
Proceedings of Materials for Sustainable Development Conference (MAT-SUS) (NFM22)
#BATTERIES - Solid State Batteries: Advances and challenges on materials, processing and characterization
Barcelona, Spain, 2022 October 24th - 28th
Organizers: Alex Morata, Albert Tarancón and Ainara Aguadero
Invited Speaker, Mark Huijben, presentation 216
DOI: https://doi.org/10.29363/nanoge.nfm.2022.216
Publication date: 11th July 2022

Solid-state batteries offer great potential for large improvements in safety and lifetime, as well as higher energy and power densities. However, the interfacial composition and structure between solid electrolytes and electrode materials often present major deviations from those of the bulk materials. Elucidating the nature of the involved interfaces is required to establish a rational approach towards the successful combination of materials in a new generation of solid-state cells. Controlled interfaces between a solid-state electrolyte, cathode and anode have been realized in 2D-planar and 3D-vertical thin film geometries by applying pulsed laser deposition. The thin film epitaxial model geometries enable full control over the material combination, crystal orientation and elemental termination at all interfaces to explore their evolution during battery operation. Epitaxial engineering is used to realize crystalline thin film model systems, which enables an unique insight into the relation between electrochemistry and structural ordering of the layers and interfaces, not obtainable in conventional polycrystalline battery architectures. Here, I will show the latest results on several different thin film battery architectures, 2D as well as 3D, involving various different cathodes (LiMn2O4, LiCoO2, NMC111, NMC622, NMC811), anodes (Li4Ti5O12, Nb18W16O93) and solid electrolytes (Li0.33La0.57TiO3, Li7La3Zr2O12, Li3PO4).

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