Please use this identifier to cite or link to this item:
http://hdl.handle.net/10995/74003
Title: | Correlative confocal Raman and scanning probe microscopy in the ionically active particles of LiMn 2 O 4 cathodes |
Authors: | Alikin, D. Slautin, B. Abramov, A. Rosato, D. Shur, V. Tselev, A. Kholkin, A. |
Issue Date: | 2019 |
Publisher: | MDPI AG |
Citation: | Correlative confocal Raman and scanning probe microscopy in the ionically active particles of LiMn 2 O 4 cathodes / D. Alikin, B. Slautin, A. Abramov, et al. // Materials. — 2019. — Vol. 12. — Iss. 9. — 1416. — DOI: 10.3390/ma12091416. |
Abstract: | In this contribution, a correlative confocal Raman and scanning probe microscopy approach was implemented to find a relation between the composition, lithiation state, and functional electrochemical response in individual micro-scale particles of a LiMn 2 O 4 spinel in a commercial Li battery cathode. Electrochemical strain microscopy (ESM) was implemented both at a low-frequency (3.5 kHz) and in a high-frequency range of excitation (above 400 kHz). It was shown that the high-frequency ESM has a significant cross-talk with topography due to a tip-sample electrostatic interaction, while the low-frequency ESM yields a response correlated with distributions of Li ions and electrochemically inactive phases revealed by the confocal Raman microscopy. Parasitic contributions into the electromechanical response from the local Joule heating and flexoelectric effect were considered as well and found to be negligible. It was concluded that the low-frequency ESM response directly corresponds to the confocal Raman microscopy data. The analysis implemented in this work is an important step towards the quantitative measurement of diffusion coefficients and ion concentration via strain-based scanning probe microscopy methods in a wide range of ionically active materials. © 2019 by the authors. |
Keywords: | BATTERIES CATHODES CONFOCAL RAMAN MICROSCOPY LIMN 2 O 4 LITHIUM MANGANATE LOW-FREQUENCY ELECTROCHEMICAL STRAIN MICROSCOPY QUANTITATIVE ELECTROCHEMICAL STRAIN MICROSCOPY SCANNING PROBE MICROSCOPY CATHODES HYDROPHOBICITY LITHIUM BATTERIES LITHIUM COMPOUNDS LITHIUM-ION BATTERIES MANGANESE COMPOUNDS SOLAR CELLS TOPOGRAPHY CONFOCAL RAMAN MICROSCOPY ELECTROCHEMICAL RESPONSE ELECTROCHEMICAL STRAIN MICROSCOPIES ELECTROMECHANICAL RESPONSE LIMN2O4 LITHIUM MANGANATES MICRO-SCALE PARTICLES QUANTITATIVE MEASUREMENT SCANNING PROBE MICROSCOPY |
URI: | http://hdl.handle.net/10995/74003 |
metadata.dc.rights: | cc-by |
SCOPUS ID: | 85065743719 |
WOS ID: | 000469757500057 |
PURE ID: | 9806848 |
ISSN: | 1996-1944 |
DOI: | 10.3390/ma12091416 |
RSCF project card: | 17-72-10144 |
Appears in Collections: | Научные публикации, проиндексированные в SCOPUS и WoS CC |
Files in This Item:
File | Description | Size | Format | |
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10.3390-ma12091416.pdf | 4,02 MB | Adobe PDF | View/Open |
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