Direct visualization of initial SEI morphology and growth kinetics during lithium deposition by in situ electrochemical transmission electron microscopy

Authors: Robert L. Sacci, Nancy J. Dudney, Karren L. More, Lucas R. Parent, Ilke Arslan, Nigel D. Browning, Raymond R. Unocic - Chemical Communications 2013 cited by 194

Deposition of Li is a major safety concern existing in Li-ion secondary batteries. Here we perform the first in situ high spatial resolution measurement coupled with real-time quantitative electrochemistry to characterize SEI formation on gold using a standard battery electrolyte. We demonstrate that a dendritic SEI forms prior to Li deposition and that it remains on the surface after Li electrodissolution.