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Dresden 2017 – scientific programme

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O: Fachverband Oberflächenphysik

O 16: SYLI: Interfacial Challenges in Solid-State Li Ion Batteries - Interface-dominated behaviour

O 16.1: Talk

Monday, March 20, 2017, 15:45–16:00, IFW A

Interfacial double layers in all-solid-state Li-ion batteries: theoretical insights — •Johannes Voss1, Saskia Stegmaier2, Karsten Reuter3, and Alan Luntz1,21SLAC National Accelerator Laboratory, Menlo Park, CA, USA — 2Stanford University, Stanford, CA, USA — 3Technische Universität München, Germany

Neglecting potential electrochemical and mechanical stability issues of the interface between battery electrode and solid Li-ion conducting electrolyte, we present a theoretical study of charge double layers at ideal solid-solid interfaces. Based on DFT calculations for Li3OCl, we discuss ionic charge carrier stabilities and interactions in the bulk and at interfaces to electrodes. We furthermore employ continuum models parametrized with DFT energies to understand charging at both the anode and cathode interfaces, respectively, and discuss how spacer materials could mitigate related potential interfacial issues.

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