Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface

Redistribution of Lithium among Interconnected Particles

Journal article (2020)

Authors

S. Basak RST/Storage of Electrochemical Energy - AS , Forschungszentrum Jülich
Vadim Migunov Forschungszentrum Jülich
Q. Lee Applied Sciences
S. Ganapathy RID/TS/Instrumenten groep
Ashwin Vijay Student
F.G.B. Ooms RST/Technici Pool - AS
M. Wagemaker RST/Storage of Electrochemical Energy - AS
E.M. Kelder RST/Storage of Electrochemical Energy - AS
Violetta Arszelewska RST/Storage of Electrochemical Energy - AS
More Authors... External organisation
Research Group
RID/TS/Instrumenten groep
Copyright: © 2020 S. Basak, Vadim Migunov, Q. Lee, S. Ganapathy, Ashwin Vijay, F.G.B. Ooms, M. Wagemaker, E.M. Kelder, Violetta Arszelewska, More Authors
DOI: https://doi.org/10.1021/acsaem.0c00543
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Published Date

2020

Language

English

Research Group

RID/TS/Instrumenten groep

Abstract

With operando transmission electron microscopy visualizing the solid-solid electrode-electrolyte interface of silicon active particles and lithium oxide solid electrolyte as a model system, we show that (de)lithiation (battery cycling) does not require all particles to be in direct contact with electrolytes across length scales of a few hundred nanometers. A facile lithium redistribution that occurs between interconnected active particles indicates that lithium does not necessarily become isolated in individual particles due to loss of a direct contact. Our results have implications for the design of all-solid-state battery electrodes with improved capacity retention and cyclability. ©