Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy
Accurate imaging methods are important for understanding electrodeposition phenomena in metal batteries. Among the suitable imaging methods for this task is magnetic resonance imaging (MRI), which is a very powerful radiological diagnostic method. In this study, MR microscopy was used to image elect...
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MDPI AG
2025-06-01
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| Series: | Molecules |
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| author | Rok Peklar Urša Mikac Igor Serša |
| author_facet | Rok Peklar Urša Mikac Igor Serša |
| author_sort | Rok Peklar |
| collection | DOAJ |
| description | Accurate imaging methods are important for understanding electrodeposition phenomena in metal batteries. Among the suitable imaging methods for this task is magnetic resonance imaging (MRI), which is a very powerful radiological diagnostic method. In this study, MR microscopy was used to image electroplating in a lithium symmetric cell, which was used as a model for a lithium-metal battery. Lithium electrodeposition in this cell was studied by sequential 3D <sup>1</sup>H MRI of 1 M LiPF<sub>6</sub> in EC/DMC electrolyte under different charging conditions, which resulted in different dynamics of the amount of electroplated lithium and its structure. The acquired images depicted the electrolyte distribution, so that the images of deposited lithium that did not give a detectable signal corresponded to the negatives of these images. With this indirect MRI, phenomena such as the transition from a mossy to a dendritic structure at Sand’s time, the growth of whiskers, the growth of dendrites with arborescent structure, the formation of dead lithium, and the formation of gas due to electrolyte decomposition were observed. In addition, the effect of charge and discharge cycles on electrodeposition was also studied. It was found that it is difficult to correctly predict the occurrence of these phenomena based on charging conditions alone, as seemingly identical conditions resulted in different results. |
| format | Article |
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| issn | 1420-3049 |
| language | English |
| publishDate | 2025-06-01 |
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| series | Molecules |
| spelling | doaj-art-74b5a1f55e074ec58f485a2bc4c46a1f2025-07-11T14:40:56ZengMDPI AGMolecules1420-30492025-06-013013273310.3390/molecules30132733Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance MicroscopyRok Peklar0Urša Mikac1Igor Serša2Jožef Stefan Institute, 1000 Ljubljana, SloveniaJožef Stefan Institute, 1000 Ljubljana, SloveniaJožef Stefan Institute, 1000 Ljubljana, SloveniaAccurate imaging methods are important for understanding electrodeposition phenomena in metal batteries. Among the suitable imaging methods for this task is magnetic resonance imaging (MRI), which is a very powerful radiological diagnostic method. In this study, MR microscopy was used to image electroplating in a lithium symmetric cell, which was used as a model for a lithium-metal battery. Lithium electrodeposition in this cell was studied by sequential 3D <sup>1</sup>H MRI of 1 M LiPF<sub>6</sub> in EC/DMC electrolyte under different charging conditions, which resulted in different dynamics of the amount of electroplated lithium and its structure. The acquired images depicted the electrolyte distribution, so that the images of deposited lithium that did not give a detectable signal corresponded to the negatives of these images. With this indirect MRI, phenomena such as the transition from a mossy to a dendritic structure at Sand’s time, the growth of whiskers, the growth of dendrites with arborescent structure, the formation of dead lithium, and the formation of gas due to electrolyte decomposition were observed. In addition, the effect of charge and discharge cycles on electrodeposition was also studied. It was found that it is difficult to correctly predict the occurrence of these phenomena based on charging conditions alone, as seemingly identical conditions resulted in different results.https://www.mdpi.com/1420-3049/30/13/2733lithium-metal batteriesdendritic growthstructure analysischarging regimessymmetric cellMRI |
| spellingShingle | Rok Peklar Urša Mikac Igor Serša Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy Molecules lithium-metal batteries dendritic growth structure analysis charging regimes symmetric cell MRI |
| title | Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy |
| title_full | Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy |
| title_fullStr | Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy |
| title_full_unstemmed | Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy |
| title_short | Observation of Electroplating in a Lithium-Metal Battery Model Using Magnetic Resonance Microscopy |
| title_sort | observation of electroplating in a lithium metal battery model using magnetic resonance microscopy |
| topic | lithium-metal batteries dendritic growth structure analysis charging regimes symmetric cell MRI |
| url | https://www.mdpi.com/1420-3049/30/13/2733 |
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