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Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy
Lithium-ion deintercalation/intercalation during charge/discharge processes is one of the essential reactions that occur in the layered cathodes of lithium-ion batteries, and the performance of the cathode can be expressed as the sum of the reactions that occur in the local area of the individual ca...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10030574/ https://www.ncbi.nlm.nih.gov/pubmed/36944681 http://dx.doi.org/10.1038/s41598-023-30673-1 |
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author | Zhang, Wenxiong Hosono, Eiji Asakura, Daisuke Yuzawa, Hayato Ohigashi, Takuji Kobayashi, Masaki Kiuchi, Hisao Harada, Yoshihisa |
author_facet | Zhang, Wenxiong Hosono, Eiji Asakura, Daisuke Yuzawa, Hayato Ohigashi, Takuji Kobayashi, Masaki Kiuchi, Hisao Harada, Yoshihisa |
author_sort | Zhang, Wenxiong |
collection | PubMed |
description | Lithium-ion deintercalation/intercalation during charge/discharge processes is one of the essential reactions that occur in the layered cathodes of lithium-ion batteries, and the performance of the cathode can be expressed as the sum of the reactions that occur in the local area of the individual cathode particles. In this study, the spatial distributions of the chemical states present in prototypical layered LiCoO(2) cathode particles were determined at different charging conditions using scanning transmission X-ray microscopy (STXM) with a spatial resolution of approximately 100 nm. The Co L(3)- and O K-edge X-ray absorption spectroscopy (XAS) spectra, extracted from the same area of the corresponding STXM images, at the initial state as well as after charging to 4.5 V demonstrate the spatial distribution of the chemical state changes depending on individual particles. In addition to the Co L(3)-edge XAS spectra, the O K-edge XAS spectra of the initial and charged LiCoO(2) particles are different, indicating that both the Co and O sites participate in charge compensation during the charging process possibly through the hybridization between the Co 3d and O 2p orbitals. Furthermore, the element maps of both the Co and O sites, derived from the STXM stack images, reveal the spatial distribution of the chemical states inside individual particles after charging to 4.5 V. The element mapping analysis suggests that inhomogeneous reactions occur on the active particles and confirm the existence of non-active particles. The results of this study demonstrate that an STXM-based spatially resolved electronic structural analysis method is useful for understanding the charging and discharging of battery materials. |
format | Online Article Text |
id | pubmed-10030574 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-100305742023-03-23 Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy Zhang, Wenxiong Hosono, Eiji Asakura, Daisuke Yuzawa, Hayato Ohigashi, Takuji Kobayashi, Masaki Kiuchi, Hisao Harada, Yoshihisa Sci Rep Article Lithium-ion deintercalation/intercalation during charge/discharge processes is one of the essential reactions that occur in the layered cathodes of lithium-ion batteries, and the performance of the cathode can be expressed as the sum of the reactions that occur in the local area of the individual cathode particles. In this study, the spatial distributions of the chemical states present in prototypical layered LiCoO(2) cathode particles were determined at different charging conditions using scanning transmission X-ray microscopy (STXM) with a spatial resolution of approximately 100 nm. The Co L(3)- and O K-edge X-ray absorption spectroscopy (XAS) spectra, extracted from the same area of the corresponding STXM images, at the initial state as well as after charging to 4.5 V demonstrate the spatial distribution of the chemical state changes depending on individual particles. In addition to the Co L(3)-edge XAS spectra, the O K-edge XAS spectra of the initial and charged LiCoO(2) particles are different, indicating that both the Co and O sites participate in charge compensation during the charging process possibly through the hybridization between the Co 3d and O 2p orbitals. Furthermore, the element maps of both the Co and O sites, derived from the STXM stack images, reveal the spatial distribution of the chemical states inside individual particles after charging to 4.5 V. The element mapping analysis suggests that inhomogeneous reactions occur on the active particles and confirm the existence of non-active particles. The results of this study demonstrate that an STXM-based spatially resolved electronic structural analysis method is useful for understanding the charging and discharging of battery materials. Nature Publishing Group UK 2023-03-21 /pmc/articles/PMC10030574/ /pubmed/36944681 http://dx.doi.org/10.1038/s41598-023-30673-1 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Zhang, Wenxiong Hosono, Eiji Asakura, Daisuke Yuzawa, Hayato Ohigashi, Takuji Kobayashi, Masaki Kiuchi, Hisao Harada, Yoshihisa Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title | Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title_full | Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title_fullStr | Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title_full_unstemmed | Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title_short | Chemical-state distributions in charged LiCoO(2) cathode particles visualized by soft X-ray spectromicroscopy |
title_sort | chemical-state distributions in charged licoo(2) cathode particles visualized by soft x-ray spectromicroscopy |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10030574/ https://www.ncbi.nlm.nih.gov/pubmed/36944681 http://dx.doi.org/10.1038/s41598-023-30673-1 |
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