Operando Terahertz Spectroscopy of Solid Electrolyte Interphase Evolution on Silicon Anodes

Daniel Krotkov; Dan Schneier; Svetlana Menkin; Yonatan Horowitz; Emanuel Peled; Diana Golodnitsky; Sharly Fleischer

doi:10.1002/batt.202100183

Operando Terahertz Spectroscopy of Solid Electrolyte Interphase Evolution on Silicon Anodes

Daniel Krotkov, Dan Schneier, Svetlana Menkin, Yonatan Horowitz, Emanuel Peled, Diana Golodnitsky^*, Sharly Fleischer^*

^*Corresponding author for this work

School of Chemistry

University of Cambridge

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The in-situ characterization of materials and interphases of battery electrodes is of crucial importance for the basic understanding of the complex, simultaneous processes that take place during the operation of secondary batteries. Here we present, for the first time, the use of a Terahertz (THz) time-domain-spectroscopy method for the operando characterization of the silicon/electrolyte interfacial phenomena and dynamics in a working lithium-ion battery. Strong correlation between the THz, XPS, and electrochemical data was established, allowing us to monitor the formation and evolution of the solid electrolyte interphase (SEI) during the reversible lithiation of the silicon anode.

Original language	English
Article number	e202100183
Journal	Batteries and Supercaps
Volume	5
Issue number	1
DOIs	https://doi.org/10.1002/batt.202100183
State	Published - Jan 2022

Funding

Funders	Funder number
Wolfson Foundation	PR/ec/20419
Israel Science Foundation	926/18
Israel National Research Center for Electrochemical Propulsion

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/batt.202100183

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abstract = "The in-situ characterization of materials and interphases of battery electrodes is of crucial importance for the basic understanding of the complex, simultaneous processes that take place during the operation of secondary batteries. Here we present, for the first time, the use of a Terahertz (THz) time-domain-spectroscopy method for the operando characterization of the silicon/electrolyte interfacial phenomena and dynamics in a working lithium-ion battery. Strong correlation between the THz, XPS, and electrochemical data was established, allowing us to monitor the formation and evolution of the solid electrolyte interphase (SEI) during the reversible lithiation of the silicon anode.",

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AU - Krotkov, Daniel

AU - Schneier, Dan

AU - Menkin, Svetlana

AU - Horowitz, Yonatan

AU - Peled, Emanuel

AU - Golodnitsky, Diana

AU - Fleischer, Sharly

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Y1 - 2022/1

N2 - The in-situ characterization of materials and interphases of battery electrodes is of crucial importance for the basic understanding of the complex, simultaneous processes that take place during the operation of secondary batteries. Here we present, for the first time, the use of a Terahertz (THz) time-domain-spectroscopy method for the operando characterization of the silicon/electrolyte interfacial phenomena and dynamics in a working lithium-ion battery. Strong correlation between the THz, XPS, and electrochemical data was established, allowing us to monitor the formation and evolution of the solid electrolyte interphase (SEI) during the reversible lithiation of the silicon anode.

AB - The in-situ characterization of materials and interphases of battery electrodes is of crucial importance for the basic understanding of the complex, simultaneous processes that take place during the operation of secondary batteries. Here we present, for the first time, the use of a Terahertz (THz) time-domain-spectroscopy method for the operando characterization of the silicon/electrolyte interfacial phenomena and dynamics in a working lithium-ion battery. Strong correlation between the THz, XPS, and electrochemical data was established, allowing us to monitor the formation and evolution of the solid electrolyte interphase (SEI) during the reversible lithiation of the silicon anode.

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Operando Terahertz Spectroscopy of Solid Electrolyte Interphase Evolution on Silicon Anodes

Abstract

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