In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on 
Anodes of Li-Ion Batteries

Moeremans, Boaz; Cheng, Hsiu-Wei; Merola, Claudia; Hu, Qingyun; Oezaslan, Mehtap; Safari, Mohammadhosein; Van Bael, Marlies K.; Hardy, An; Valtiner, Markus; Renner, Frank Uwe

doi:10.1002/advs.201900190

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In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on Anodes of Li-Ion Batteries

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Moeremans, Boaz
Institute for Materials Research, Hasselt University, Hasselt, Belgium;
Institut für Physikalische Chemie II, TU Bergakademie Freiberg, 09599 Freiberg, German;
Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Cheng, Hsiu-Wei
Institute of Applied Physics, Vienna University of Technology, Vienna, Austria;
Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Merola, Claudia
Institute for Applied Physics, Vienna University of Technology, Wiedner Hauptstrasse 8-10, A-1040 Vienna, Austria;
Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;

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Hu, Qingyun
Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Institute for Applied Physics, Applied Interface Physics, Technical University of Vienna, 1040 Vienna, Austria;

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Valtiner, Markus
Interaction Forces and Functional Materials, Interface Chemistry and Surface Engineering, Max-Planck-Institut für Eisenforschung GmbH, Max Planck Society;
Institute for physical chemistry II, Technische Universität Bergakademie Freiberg, Leipzigerstraße 29, 09599 Freiberg, Germany;
Institute of Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163-AC, A-1060 Vienna, Austria;

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Citation

Moeremans, B., Cheng, H.-W., Merola, C., Hu, Q., Oezaslan, M., Safari, M., et al. (2019). In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on Anodes of Li-Ion Batteries. Advanced Science, 6(16): 1900190. doi:10.1002/advs.201900190.

Cite as: https://hdl.handle.net/21.11116/0000-0009-7345-8

Abstract

The interfacial decomposition products forming the so-called solid–electrolyte interphase (SEI) significantly determine the destiny of a Li-ion battery. Ultimate knowledge of its detailed behavior and better control are required for higher rates, longer life-time, and increased safety. Employing an electrochemical surface force apparatus, it is possible to control the growth and to investigate the mechanical properties of an SEI in a lithium-ion battery environment. This new approach is here introduced on a gold model system and reveals a compressible film at all stages of SEI growth. The demonstrated methodology provides a unique tool for analyzing electrochemical battery interfaces, in particular in view of alternative electrolyte formulations and artificial interfaces. © 2019 The Authors. Published by WILEY-VCH Verlag GmbH Co. KGaA, Weinheim