Journal
NANO LETTERS
Volume 14, Issue 3, Pages 1293-1299Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nl404271k
Keywords
In situ TEM; liquid stage; Li-ion battery; electrolyte; Lithium salt
Categories
Funding
- Joint Center for Energy Storage Research (JCESR), an Energy Innovation Hub - DOE, Office of Science, Basic Energy Sciences
- Chemical Imaging Initiative under the Laboratory Directed Research and Development Program at Pacific Northwest National Laboratory (PNNL)
- U.S. Department of Energy (DOE) [DE-AC05-76RL01830]
- Department of Energy's Office of Biological and Environmental Research
- National Science Foundation (NSF), Division of Civil, Mechanical, and Manufacturing Innovation (CMMI) [NSF-CMMI-1334012]
- Florida State University (FSU), Committee on Faculty Research Support (COFRS) [032968]
- Ralph E. Powe Junior Faculty Enhancement Award
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1334012] Funding Source: National Science Foundation
Ask authors/readers for more resources
Development of novel electrolytes with increased electrochemical stability is critical for the next generation battery technologies. In situ electrochemical fluid cells provide the ability to rapidly and directly characterize electrode/electrolyte interfacial reactions under conditions directly relevant to the operation of practical batteries. In this paper, we have studied the breakdown of a range of inorganic/salt complexes relevant to state-of-the-art Li-ion battery systems by in situ (scanning) transmission electron microscopy ((S)TEM). In these experiments, the electron beam itself caused the localized electrochemical reaction that allowed us to observe electrolyte breakdown in real-time. The results of the in situ (S)TEM experiments matches with previous stability tests performed during battery operation and the products and mechanisms are also consistent with known mechanisms. This analysis indicates that in situ liquid stage (S)TEM observations could be used to directly test new electrolyte designs and identify a smaller library of candidate solutions deserving of more detailed characterization. A systematic study of electrolyte degradation is also a necessary first step for any future controlled in operando liquid (S)TEM experiments intent on visualizing working batteries at the nanoscale.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available