In situ mapping of solid–electrolyte interphase (SEI) chemistry on individual nanogranules led to the identification of lithium dendrite suppression mechanisms.
Significance and Impact
The ability to perform direct mapping of SEI chemistry at the nanoscale is a breakthrough in the study of electron beam sensitive materials using liquid cell TEM and opens opportunities to explore unsolved mechanisms in batteries.
- A poly(diallyldimethylammonium chloride) (PDDA) cationic polymer film was used to coat the electrodes of an electrochemical liquid cell
- Lithium nanogranular growth was achieved
- Chemical mapping of the SEI on individual nanogranules provides remarkable details key to the identification of dendrites suppression mechanisms.