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

Operando Transmission Electron Microscopy Study of All-Solid-State Battery Interface: Redistribution of Lithium among Interconnected Particles

Basak, S. (TU Delft RST/Storage of Electrochemical Energy; Forschungszentrum Jülich GmbH)
Migunov, Vadim (Forschungszentrum Jülich GmbH)
Lee, Q. (TU Delft Applied Sciences)
Ganapathy, S. (TU Delft RID/TS/Instrumenten groep)
Vijay, Ashwin (Student TU Delft)
Ooms, F.G.B. (TU Delft RST/Technici Pool)
Wagemaker, M. (TU Delft RST/Storage of Electrochemical Energy)
Kelder, E.M. (TU Delft RST/Storage of Electrochemical Energy)
Arszelewska, Violetta (TU Delft RST/Storage of Electrochemical Energy)

Applied Sciences

2020

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. ©

(de)lithiation
all-solid-state batteries
electrode-electrolyte interface
electron microscopy
operando TEM

http://resolver.tudelft.nl/uuid:a6cc796e-012c-4dd9-98f4-6bfda227c1da

https://doi.org/10.1021/acsaem.0c00543

2574-0962

ACS Applied Energy Materials, 3 (6), 5101-5106

Institutional Repository

journal article

© 2020 S. Basak, Vadim Migunov, Q. Lee, S. Ganapathy, Ashwin Vijay, F.G.B. Ooms, M. Wagemaker, E.M. Kelder, Violetta Arszelewska, More Authors