A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser
The wettability of electrodes increases the power and energy densities of the cells of lithium-ion batteries, which is vital to improving their electrochemical performance. Numerous studies in the past have attempted to explain the effect of electrolyte and calendering on wettability. In this work,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-05-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/12/5/582 |
| _version_ | 1797533399330586624 |
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| author | Mulugeta Gebrekiros Berhe Dongkyoung Lee |
| author_facet | Mulugeta Gebrekiros Berhe Dongkyoung Lee |
| author_sort | Mulugeta Gebrekiros Berhe |
| collection | DOAJ |
| description | The wettability of electrodes increases the power and energy densities of the cells of lithium-ion batteries, which is vital to improving their electrochemical performance. Numerous studies in the past have attempted to explain the effect of electrolyte and calendering on wettability. In this work, the wettability behavior of structured and unstructured LiFePO<sub>4</sub> electrodes was studied. Firstly, the wettability morphology of the structured electrode was analyzed, and the electrode geometry was quantified in terms of ablation top and bottom width, ablation depth, and aspect ratio. From the result of the geometry analysis, the minimum measured values of aspect ratio and ablation depth were used as structured electrodes. Laser structuring with pitch distances of 112 μm, 224 μm, and 448 μm was applied. Secondly, the wettability of the electrodes was measured mainly by total wetting time and electrolyte spreading area. This study demonstrates that the laser-based structuring of the electrode increases the electrochemically active surface area of the electrode. The electrode structured with 112 μm pitch distance exhibited the fastest wetting at a time of 13.5 s. However, the unstructured electrode exhibited full wetting at a time of 84 s. |
| first_indexed | 2024-03-10T11:14:00Z |
| format | Article |
| id | doaj.art-3b42be4895dc45f1a866cccbe01eac6d |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-03-10T11:14:00Z |
| publishDate | 2021-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-3b42be4895dc45f1a866cccbe01eac6d2023-11-21T20:32:46ZengMDPI AGMicromachines2072-666X2021-05-0112558210.3390/mi12050582A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber LaserMulugeta Gebrekiros Berhe0Dongkyoung Lee1Department of Future Convergence Engineering, Kongju National University, Cheonan 31080, KoreaDepartment of Future Convergence Engineering, Kongju National University, Cheonan 31080, KoreaThe wettability of electrodes increases the power and energy densities of the cells of lithium-ion batteries, which is vital to improving their electrochemical performance. Numerous studies in the past have attempted to explain the effect of electrolyte and calendering on wettability. In this work, the wettability behavior of structured and unstructured LiFePO<sub>4</sub> electrodes was studied. Firstly, the wettability morphology of the structured electrode was analyzed, and the electrode geometry was quantified in terms of ablation top and bottom width, ablation depth, and aspect ratio. From the result of the geometry analysis, the minimum measured values of aspect ratio and ablation depth were used as structured electrodes. Laser structuring with pitch distances of 112 μm, 224 μm, and 448 μm was applied. Secondly, the wettability of the electrodes was measured mainly by total wetting time and electrolyte spreading area. This study demonstrates that the laser-based structuring of the electrode increases the electrochemically active surface area of the electrode. The electrode structured with 112 μm pitch distance exhibited the fastest wetting at a time of 13.5 s. However, the unstructured electrode exhibited full wetting at a time of 84 s.https://www.mdpi.com/2072-666X/12/5/582wettabilityelectrodeslaser structuringspread areaelectrolytewetting time |
| spellingShingle | Mulugeta Gebrekiros Berhe Dongkyoung Lee A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser Micromachines wettability electrodes laser structuring spread area electrolyte wetting time |
| title | A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser |
| title_full | A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser |
| title_fullStr | A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser |
| title_full_unstemmed | A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser |
| title_short | A Comparative Study on the Wettability of Unstructured and Structured LiFePO<sub>4</sub> with Nanosecond Pulsed Fiber Laser |
| title_sort | comparative study on the wettability of unstructured and structured lifepo sub 4 sub with nanosecond pulsed fiber laser |
| topic | wettability electrodes laser structuring spread area electrolyte wetting time |
| url | https://www.mdpi.com/2072-666X/12/5/582 |
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