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

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.

SUBMITTER: Moeremans B 

PROVIDER: S-EPMC6702625 | biostudies-literature | 2019 Aug

REPOSITORIES: biostudies-literature

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

Moeremans Boaz B   Cheng Hsiu-Wei HW   Merola Claudia C   Hu Qingyun Q   Oezaslan Mehtap M   Safari Mohammadhosein M   Van Bael Marlies K MK   Hardy An A   Valtiner Markus M   Renner Frank Uwe FU  

Advanced science (Weinheim, Baden-Wurttemberg, Germany) 20190614 16

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 int  ...[more]

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