TY  - JOUR
AU  - Basak, Shibabrata
AU  - Tavabi, Amir H.
AU  - Dzieciol, Krzysztof
AU  - Migunov, Vadim
AU  - Arszelewska, Violetta
AU  - Tempel, Hermann
AU  - Kungl, Hans
AU  - Kelder, Erik M.
AU  - Wagemaker, Marnix
AU  - George, Chandramohan
AU  - Mayer, Joachim
AU  - Dunin-Borkowski, Rafal E.
AU  - Eichel, Rüdiger-A.
TI  - Operando transmission electron microscopy of battery cycling: thickness dependent breaking of TiO 2 coating on Si/SiO 2 nanoparticles
JO  - Chemical communications
VL  - 58
IS  - 19
SN  - 0009-241X
CY  - Cambridge
PB  - Soc.
M1  - FZJ-2022-02049
SP  - 3130 - 3133
PY  - 2022
AB  - 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.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000751912700001
DO  - DOI:10.1039/D1CC07172F
UR  - https://juser.fz-juelich.de/record/907457
ER  -