Journal Article

FZJ-2022-02049

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Operando transmission electron microscopy of battery cycling: thickness dependent breaking of TiO 2 coating on Si/SiO 2 nanoparticles

Basak, S. (Corresponding author)FZJ* ; Tavabi, A. H.FZJ* ; Dzieciol, K.FZJ* ; Migunov, V. ; Arszelewska, V. ; Tempel, H.FZJ* ; Kungl, H.FZJ* ; Kelder, E. M. ; Wagemaker, M. ; George, C. ; Mayer, J.FZJ* ; Dunin-Borkowski, R. E.FZJ* ; Eichel, R.-A.FZJ*

2022
Soc. Cambridge

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Please use a persistent id in citations: http://hdl.handle.net/2128/31109  doi:10.1039/D1CC07172F

Abstract: Conformal coating of silicon (Si) anode particles is a common strategy for improving their mechanical integrity, to mitigate battery capacity fading due to particle volume expansion, which can result in particle crumbling due to lithiation induced strain and excessive solid–electrolyte interface formation. Here, we use operando transmission electron microscopy in an open cell to show that TiO2 coatings on Si/SiO2 particles undergo thickness dependent rupture on battery cycling where thicker coatings crumble more readily than thinner (∼5 nm) coatings, which corroborates the difference in their capacities.

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Contributing Institute(s):

1. Physik Nanoskaliger Systeme (ER-C-1)
2. Materialwissenschaft u. Werkstofftechnik (ER-C-2)
3. Grundlagen der Elektrochemie (IEK-9)

Research Program(s):

1. 5351 - Platform for Correlative, In Situ and Operando Characterization (POF4-535) (POF4-535)
2. 5353 - Understanding the Structural and Functional Behavior of Solid State Systems (POF4-535) (POF4-535)
3. 1223 - Batteries in Application (POF4-122) (POF4-122)
4. Electroscopy - Electrochemistry of All-solid-state-battery Processes using Operando Electron Microscopy (892916) (892916)

Appears in the scientific report 2022

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Database coverage:
; ; ; Chemical Reactions ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 5 ; Index Chemicus ; JCR ; National-Konsortium ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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