In Situ Mechanical Analysis of the Nanoscopic Solid Electrolyte Interphase on Anodes of Li-Ion Batteries
Journal
ADVANCED SCIENCE
Journal Volume
6
Journal Issue
16
Pages
1900190
Date Issued
2019
Author(s)
Moeremans, B
Merola, C
Hu, QY
Oezaslan, M
Safari, M
Van Bael, MK
Hardy, A
Valtiner, M
Renner, FU
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.
SDGs
Type
journal article