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Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed through Synchrotron-Based Imaging Techniques.
Adv Mater. 2020 Jul 01 [Online ahead of print]AM

Abstract

The Li metal anode has been long sought-after for application in Li metal batteries due to its high specific capacity (3860 mAh g-1) and low electrochemical potential (-3.04 V vs the standard hydrogen electrode). Nevertheless, the behavior of Li metal in different environments has been scarcely reported. Herein, the temperature-dependent behavior of Li metal anodes in carbonate electrolyte from the micro- to macroscales are explored with advanced synchrotron-based characterization techniques such as X-ray computed tomography and energy-dependent X-ray fluorescence mapping. The importance of testing methodology is exemplified, and the electrochemical behavior and failure modes of Li anodes cycled at different temperatures are discussed. Moreover, the origin of cycling performance at different temperatures is identified through analysis of Coulombic efficiencies, surface morphology, and the chemical composition of the solid electrolyte interphase in quasi-3D space with energy-dependent X-ray fluorescence mappings coupled with micro-X-ray absorption near edge structure. This work provides new characterization methods for Li metal anodes and serves as an important basis toward the understanding of their electrochemical behavior in carbonate electrolytes at different temperatures.

Authors+Show Affiliations

Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada.Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada.Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada.Canadian Light Source, Saskatoon, SK, S79 2V3, Canada.Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada.Department of Mechanical and Materials Engineering, University of Western Ontario, London, ON, N6A 5B9, Canada.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

32613685

Citation

Adair, Keegan R., et al. "Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed Through Synchrotron-Based Imaging Techniques." Advanced Materials (Deerfield Beach, Fla.), 2020, pp. e2002550.
Adair KR, Banis MN, Zhao Y, et al. Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed through Synchrotron-Based Imaging Techniques. Adv Mater Weinheim. 2020.
Adair, K. R., Banis, M. N., Zhao, Y., Bond, T., Li, R., & Sun, X. (2020). Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed through Synchrotron-Based Imaging Techniques. Advanced Materials (Deerfield Beach, Fla.), e2002550. https://doi.org/10.1002/adma.202002550
Adair KR, et al. Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed Through Synchrotron-Based Imaging Techniques. Adv Mater Weinheim. 2020 Jul 1;e2002550. PubMed PMID: 32613685.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Temperature-Dependent Chemical and Physical Microstructure of Li Metal Anodes Revealed through Synchrotron-Based Imaging Techniques. AU - Adair,Keegan R, AU - Banis,Mohammad Norouzi, AU - Zhao,Yang, AU - Bond,Toby, AU - Li,Ruying, AU - Sun,Xueliang, Y1 - 2020/07/01/ PY - 2020/04/14/received PY - 2020/05/17/revised PY - 2020/7/3/entrez KW - Li dendrites KW - Li metal anodes KW - carbonate electrolytes KW - electrochemical behavior KW - failure modes SP - e2002550 EP - e2002550 JF - Advanced materials (Deerfield Beach, Fla.) JO - Adv. Mater. Weinheim N2 - The Li metal anode has been long sought-after for application in Li metal batteries due to its high specific capacity (3860 mAh g-1) and low electrochemical potential (-3.04 V vs the standard hydrogen electrode). Nevertheless, the behavior of Li metal in different environments has been scarcely reported. Herein, the temperature-dependent behavior of Li metal anodes in carbonate electrolyte from the micro- to macroscales are explored with advanced synchrotron-based characterization techniques such as X-ray computed tomography and energy-dependent X-ray fluorescence mapping. The importance of testing methodology is exemplified, and the electrochemical behavior and failure modes of Li anodes cycled at different temperatures are discussed. Moreover, the origin of cycling performance at different temperatures is identified through analysis of Coulombic efficiencies, surface morphology, and the chemical composition of the solid electrolyte interphase in quasi-3D space with energy-dependent X-ray fluorescence mappings coupled with micro-X-ray absorption near edge structure. This work provides new characterization methods for Li metal anodes and serves as an important basis toward the understanding of their electrochemical behavior in carbonate electrolytes at different temperatures. SN - 1521-4095 UR - https://www.unboundmedicine.com/medline/citation/32613685/Temperature-Dependent_Chemical_and_Physical_Microstructure_of_Li_Metal_Anodes_Revealed_through_Synchrotron-Based_Imaging_Techniques L2 - https://doi.org/10.1002/adma.202002550 DB - PRIME DP - Unbound Medicine ER -
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