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Operando transmission electron microscopy of battery cycling: thickness dependent breaking of TiO2 coating on Si/SiO2 nanoparticles.
- Source :
- Chemical Communications; 3/7/2022, Vol. 58 Issue 19, p3130-3133, 4p
- Publication Year :
- 2022
-
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 TiO<subscript>2</subscript> coatings on Si/SiO<subscript>2</subscript> 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. [ABSTRACT FROM AUTHOR]
- Subjects :
- TRANSMISSION electron microscopy
CONFORMAL coatings
SURFACE coatings
NANOPARTICLES
Subjects
Details
- Language :
- English
- ISSN :
- 13597345
- Volume :
- 58
- Issue :
- 19
- Database :
- Complementary Index
- Journal :
- Chemical Communications
- Publication Type :
- Academic Journal
- Accession number :
- 155554129
- Full Text :
- https://doi.org/10.1039/d1cc07172f