Molecular Interactions and Dynamics at Solid Electrolyte Interfaces
EMSL Project ID
40125
Abstract
We will carry out a systematic study on molecular interactions and dynamics at solid electrolyte interfaces (SEIs) of Li-ion batteries using primarily in situ quantitative nonlinear optical spectroscopy measurements. The objectives of this study are 3 fold: (1) to establish molecular-level metrology for characterizing SEI structures and compositions in situ; (2) to unravel molecular mechanisms governing the reactivity and interactions of various molecules at the interface; (3) to develop quantitative metrics for assessing the performance of Li-ion battery via in situ measurements. Furthermore, a general theoretical framework will be developed and validated on the basis of quantitative measurements. Combined experimental and theoretical studies of the basic materials systems will cast new insights in molecular interaction and reactivity at electrode/electrolyte interfaces, which will be critical for the design and development of next generation batteries. This study aligns with the EMSL scientific theme of Science of Interfacial Phenomena, specifically, 'In situ real-time investigations of dynamical processes at surfaces or interfaces'. EMSL's state of the art measurement capability, particularly the nonlinear optical spectroscopy, provides the only feasible means for the proposed study.
Project Details
Project type
Large-Scale EMSL Research
Start Date
2010-10-06
End Date
2013-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
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Xiao L, Y Cao, J Xiao, B Schwenzer, MH Engelhard, LV Saraf, Z Nie, GJ Exarhos, and J Liu. 2012. "A Soft Approach to Encapsulate Sulfur: Polyaniline Nanotubes for Lithium-Sulfur Batteries with Long Cycle Life." Advanced Materials 24(9):1176–1181. doi:10.1002/adma.201103392
The stability of organic solvents and carbon electrode in nonaqueous Li-O2 batteries
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