Combining isotopic measurements using in situ Liquid SIMS and in situ TEM to determine the mechanism and kinetics of Li ion mobility in SEI layers
EMSL Project ID
49687
Abstract
Li ion batteries are now indispensably used as energy storage devices for portable electronics, electric vehicles, and are starting to enter the market of the renewable energies. The rechargeable capacity and the battery life depend critically on the structural stability of the electrodes themselves, the electrolyte degradation rate, and the electrode-electrolyte interaction layer - the solid electrolyte interface (SEI). Processes that occur at the SEI in batteries are critical to battery lifetime and performance, but their details remain elusive because of the difficulty of examining the interface during battery operation. Although electron microscopy and magnetic resonance approaches have provided new insights, isotopic and time-resolved measurements using our novel in situ secondary ion mass spectrometry (SIMS) in combination with in situ TEM offers the potential to provide unique information about mechanistic and dynamic processes. Finding answers to these critical questions will enable further advancement of rechargeable Li-ion battery design and performance. In this proposed research, we plan to use the unique capabilities developed in PNNL to examine the critical details of Li transport in the SEI layer. Isotopic measurements will resolve outstanding questions regarding how Li migrate through the SEI layer (diffusion or site exchange) under electric field, and provide a quantitative measure of its mobility. This proposed project has both scientific and capability development objectives. Isotopic studies are common in chemistry, but the ability to obtain isotopic information at a working “buried” electrochemical interface has not been previously possible. In addition, the approach developed in this project will be able to be extended to other advanced battery systems and other important solid-liquid interface areas including electrocatalysis and geochemistry.
Project Details
Start Date
2016-11-15
End Date
2019-09-30
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members
Related Publications
Keles O., B. Karahan, L. Eryilmaz, R. Amine, A. Abouimrane, Z. Chen, and X. Zuo, et al. 2020. "Superlattice-Structured Films by Magnetron Sputtering as New Era Electrodes for Advanced Lithium-ion Batteries." Nano Energy 76. PNNL-SA-154905. doi:10.1016/j.nanoen.2020.105094
Mulcahy J.R., S. He, D.S. Jin, W. Guo, S. Arteta, J.B. Cliff, and Z. Zhu, et al. 2019. "Experimental Insights into the Growth of Single Truncated Anatase Bipyramids." Chemistry - A European Journal 25, no. 4:993-996. PNNL-SA-140103. doi:10.1002/chem.201805773
Song H., X. Yu, Q. Huang, M. Qiao, T. Wang, J. Zhang, and Y. Liu, et al. 2017. "Microstructural, Mechanical and Optical Properties Research of a Carbon Ion-irradiated Y2SiO5 Crystal." Nuclear Instruments and Methods in Physics Research B 406. PNNL-SA-130400. doi:10.1016/j.nimb.2017.01.038
Wang J., Y. Zhang, X. Yu, X. Hua, F. Wang, Y. Long, and Z. Zhu. 2019. "Direct Molecular Evidence of Proton Transfer and Mass Dynamics at the Electrode-Electrolyte Interface." The Journal of Physical Chemistry Letters 10, no. 2:251-258. PNNL-SA-140106. doi:10.1021/acs.jpclett.8b03282
Yao J., A.D. Guzman, Z. Zhu, and X. Yu. 2019. "Imaging Corrosion at the Metal-Paint Interface Using Time-of-Flight Secondary Ion Mass Spectrometry." Journal of Visualized Experiments. PNNL-SA-139971. doi:10.3791/59523
Zhang Y., J. Wang, X. Yu, D.R. Baer, Y. Zhao, L. Mao, and F. Wang, et al. 2019. "Potential-Dynamic Surface Chemistry Controls the Electro-catalytic Processes of Ethanol Oxidation on Gold Surfaces." ACS Energy Letters 4, no. 1:215-221. PNNL-SA-139752. doi:10.1021/acsenergylett.8b02019
Zhang Y., W. Zeng, L. Huang, W. Liu, E. Jia, Y. Zhao, and F. Wang, et al. 2019. "In Situ Liquid Secondary Ion Mass Spectrometry: A Surprisingly Soft Ionization Process for Investigation of Halide Ion Hydration." Analytical Chemistry 91, no. 11:7039-7046. PNNL-SA-140384. doi:10.1021/acs.analchem.8b05804
Zhou Y., M. Su, X. Yu, Y. Zhang, J. Wang, X. Ren, and R. Cao, et al. 2020. "Real-time mass spectrometric characterization of the solid-electrolyte interphase of a lithium-ion battery." Nature Nanotechnology 15, no. 3:224-230. PNNL-SA-144845. doi:10.1038/s41565-019-0618-4