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. ©
Original language | English |
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Pages (from-to) | 5101-5106 |
Number of pages | 6 |
Journal | ACS Applied Energy Materials |
Volume | 3 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2020 |
Keywords
- (de)lithiation
- all-solid-state batteries
- electrode-electrolyte interface
- electron microscopy
- operando TEM