Heber, Marcel ; Hess, Christian (2022):
Monitoring electrode/electrolyte interfaces of Li‐ion batteries under working conditions: A surface‐enhanced Raman spectroscopic study on LiCoO₂ composite cathodes. (Publisher's Version)
In: Surface and Interface Analysis, 54 (8), pp. 847-854. John Wiley & Sons, e-ISSN 1096-9918,
DOI: 10.26083/tuprints-00022435,
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Item Type: | Article |
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Origin: | Secondary publication DeepGreen |
Status: | Publisher's Version |
Title: | Monitoring electrode/electrolyte interfaces of Li‐ion batteries under working conditions: A surface‐enhanced Raman spectroscopic study on LiCoO₂ composite cathodes |
Language: | English |
Abstract: | Lithium‐ion batteries are commonly used for electrical energy storage in portable devices and are promising systems for large‐scale energy storage. However, their application is still limited due to electrode degradation and stability issues. To enhance the fundamental understanding of electrode degradation, we report on the Raman spectroscopic characterization of LiCoO₂ cathode materials of working Li‐ion batteries. To facilitate the spectroscopic analysis of the solid electrolyte interface (SEI), we apply in situ surface‐enhanced Raman spectroscopy under battery working conditions by using Au nanoparticles coated with a thin SiO₂ layer (Au@SiO₂). We observe a surface‐enhanced Raman signal of Li₂CO₃ at 1090 cm⁻¹ during electrochemical cycling as an intermediate. Its formation/decomposition highlights the role of Li₂CO₃ as a component of the SEI on LiCoO₂ composite cathodes. Our results demonstrate the potential of Raman spectroscopy to monitor electrode/electrolyte interfaces of lithium‐ion batteries under working conditions thus allowing relations between electrochemical performance and structural changes to be established. |
Journal or Publication Title: | Surface and Interface Analysis |
Volume of the journal: | 54 |
Issue Number: | 8 |
Place of Publication: | Darmstadt |
Publisher: | John Wiley & Sons |
Uncontrolled Keywords: | in situ spectroscopy, LiCoO₂, lithium batteries, Raman spectroscopy, SERS, SHINERS, solid electrolyte interface |
Classification DDC: | 500 Naturwissenschaften und Mathematik > 540 Chemie |
Divisions: | 07 Department of Chemistry > Physical Chemistry |
Date Deposited: | 07 Oct 2022 13:26 |
Last Modified: | 11 Oct 2022 09:29 |
DOI: | 10.26083/tuprints-00022435 |
Corresponding Links: | |
URN: | urn:nbn:de:tuda-tuprints-224358 |
SWORD Depositor: | Deep Green |
URI: | https://tuprints.ulb.tu-darmstadt.de/id/eprint/22435 |
PPN: | 500226407 |
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