Direct Visualization of Initial SEI Morphology and Growth Kinetics During Lithium Deposition by in situ Electrochemical Transmission Electron Microscopy

Journal Article · Fri Dec 20 00:00:00 EST 2013 · Chemical Communications, 50(17):2104-2107

DOI:https://doi.org/10.1039/c3cc49029g· OSTI ID:1126348

Sacci, Robert L.; Dudney, Nancy J.; More, Karren L.; Parent, Lucas R.; Arslan, Ilke; Browning, Nigel D.; Unocic, Raymond R.

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.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Environmental Molecular Sciences Lab. (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1126348
• Report Number(s): PNNL-SA-100306; 47296; KC0208010
• Journal Information: Chemical Communications, 50(17):2104-2107, Journal Name: Chemical Communications, 50(17):2104-2107
• Country of Publication: United States
• Language: English

Related Subjects

In situ (E)TEM
Lithium Deposition
Environmental Molecular Sciences Laboratory