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

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