Direct visualization of initial SEI morphology and growth kinetics during lithium deposition by in situ
Robert L Sacci1, Nancy J Dudney, Karren L More
1Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA. saccirl@ornl.gov.
Chemical Communications (Cambridge, England)
|January 14, 2014
Abstract:
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.
