Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach
Lithium manganese-based cathodes are widely used in rechargeable batteries due to their low cost, safety, and ecological stability. On the other hand, fast capacity fade occurs in LiMn2O4 mainly because of the induced manganese dissolution and formation of additional phases. Confocal Raman microscop...
| Main Authors: | , , , , , |
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| Format: | Article |
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MDPI AG
2018-05-01
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| Series: | Batteries |
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| Online Access: | http://www.mdpi.com/2313-0105/4/2/21 |
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| author | Boris Slautin Denis Alikin Daniele Rosato Dmitry Pelegov Vladimir Shur Andrei Kholkin |
| author_facet | Boris Slautin Denis Alikin Daniele Rosato Dmitry Pelegov Vladimir Shur Andrei Kholkin |
| author_sort | Boris Slautin |
| collection | DOAJ |
| description | Lithium manganese-based cathodes are widely used in rechargeable batteries due to their low cost, safety, and ecological stability. On the other hand, fast capacity fade occurs in LiMn2O4 mainly because of the induced manganese dissolution and formation of additional phases. Confocal Raman microscopy provides many opportunities for sensitive and spatially resolved structural studies of micro- and nanoscale phenomena. Here, we demonstrate advantages of confocal Raman spectroscopy approach for uncovering the mechanisms of lithiation/delithiation and degradation in LiMn2O4 commercial cathodes. The analysis of Raman spectra for inspecting local lithiation state and phase composition is proposed and exploited for the visualization of the inhomogeneous distribution of lithium ions. The cycling of cathodes is shown to be followed by the formation and dissolution of the Mn3O4 phase and local disturbance of the lithiation state. These processes are believed to be responsible for the capacity fade in the commercial batteries. |
| first_indexed | 2024-04-12T02:33:18Z |
| format | Article |
| id | doaj.art-9570c5c413a6472a9aa81f68a330032b |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-04-12T02:33:18Z |
| publishDate | 2018-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-9570c5c413a6472a9aa81f68a330032b2022-12-22T03:51:39ZengMDPI AGBatteries2313-01052018-05-01422110.3390/batteries4020021batteries4020021Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy ApproachBoris Slautin0Denis Alikin1Daniele Rosato2Dmitry Pelegov3Vladimir Shur4Andrei Kholkin5School of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, RussiaSchool of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, RussiaRobert Bosch GmbH, 70839 Gerlingen-Schillerhoehe, GermanySchool of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, RussiaSchool of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, RussiaSchool of Natural Sciences and Mathematics, Ural Federal University, 620000 Ekaterinburg, RussiaLithium manganese-based cathodes are widely used in rechargeable batteries due to their low cost, safety, and ecological stability. On the other hand, fast capacity fade occurs in LiMn2O4 mainly because of the induced manganese dissolution and formation of additional phases. Confocal Raman microscopy provides many opportunities for sensitive and spatially resolved structural studies of micro- and nanoscale phenomena. Here, we demonstrate advantages of confocal Raman spectroscopy approach for uncovering the mechanisms of lithiation/delithiation and degradation in LiMn2O4 commercial cathodes. The analysis of Raman spectra for inspecting local lithiation state and phase composition is proposed and exploited for the visualization of the inhomogeneous distribution of lithium ions. The cycling of cathodes is shown to be followed by the formation and dissolution of the Mn3O4 phase and local disturbance of the lithiation state. These processes are believed to be responsible for the capacity fade in the commercial batteries.http://www.mdpi.com/2313-0105/4/2/21confocal Raman microscopylithium manganese spineldegradationlithium-ion batteries |
| spellingShingle | Boris Slautin Denis Alikin Daniele Rosato Dmitry Pelegov Vladimir Shur Andrei Kholkin Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach Batteries confocal Raman microscopy lithium manganese spinel degradation lithium-ion batteries |
| title | Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach |
| title_full | Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach |
| title_fullStr | Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach |
| title_full_unstemmed | Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach |
| title_short | Local Study of Lithiation and Degradation Paths in LiMn2O4 Battery Cathodes: Confocal Raman Microscopy Approach |
| title_sort | local study of lithiation and degradation paths in limn2o4 battery cathodes confocal raman microscopy approach |
| topic | confocal Raman microscopy lithium manganese spinel degradation lithium-ion batteries |
| url | http://www.mdpi.com/2313-0105/4/2/21 |
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