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B. Moeremans, H. Cheng, C. Merola, Q. Hu, M. Oezaslan, M. Safari, M. Van Bael, A. Hardy, M. Valtiner, F. Renner:
"In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on Anodes of Li Ion Batteries";
Advanced Science, 6 (2019), S. 19001901 - 19001905.

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.

http://dx.doi.org/10.1002/advs.201900190