Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode
LiFePO4 cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224...
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Elsevier
2025-03-01
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| Series: | Journal of Science: Advanced Materials and Devices |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468217924001710 |
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| author | Dongkyu Park Dongkyoung Lee |
| author_facet | Dongkyu Park Dongkyoung Lee |
| author_sort | Dongkyu Park |
| collection | DOAJ |
| description | LiFePO4 cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224 μm). Groove morphology varied with laser parameters. Cathodes with higher aspect ratios exhibited lower internal resistance. However, capacity decreased as groove pitch distance narrowed. The normalized specific capacity of the 3D cathode with an aspect ratio of 0.36 and a pitch distance of 224 μm was 6% higher than that of an unstructured cathode at a 2C rate. |
| format | Article |
| id | doaj-art-145b2785a8cc4984b3a0850fc60e3e0e |
| institution | DOAJ |
| issn | 2468-2179 |
| language | English |
| publishDate | 2025-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Science: Advanced Materials and Devices |
| spelling | doaj-art-145b2785a8cc4984b3a0850fc60e3e0e2025-08-20T03:11:37ZengElsevierJournal of Science: Advanced Materials and Devices2468-21792025-03-0110110084010.1016/j.jsamd.2024.100840Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathodeDongkyu Park0Dongkyoung Lee1Department of Future Convergence Engineering, Graduate School Kongju National University, Cheonan, South KoreaDepartment of Future Convergence Engineering, Graduate School Kongju National University, Cheonan, South Korea; Department of Mechanical and Automotive Engineering, Kongju National University, Cheonan, South Korea; Center for Advanced Power Materials and Parts of Powder (CAMP2), Kongju National University, Cheonan, 31080, South Korea; Corresponding author. Department of Future Convergence Engineering, Graduate School Kongju National University, Cheonan, South Korea.LiFePO4 cathode's low-capacity retention at high current rates is due to its low electrical conductivity. To address this, a three-dimensional cathode was fabricated using a nanosecond laser. Its performance was studied based on groove aspect ratios (0.39, 0.96) and pitch distances (112 μm, 224 μm). Groove morphology varied with laser parameters. Cathodes with higher aspect ratios exhibited lower internal resistance. However, capacity decreased as groove pitch distance narrowed. The normalized specific capacity of the 3D cathode with an aspect ratio of 0.36 and a pitch distance of 224 μm was 6% higher than that of an unstructured cathode at a 2C rate.http://www.sciencedirect.com/science/article/pii/S2468217924001710Lithium-ion batteriesThree-dimensional electrodesLiFePO4 cathodeLaser structuringEffect of groove morphologyRate capability |
| spellingShingle | Dongkyu Park Dongkyoung Lee Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode Journal of Science: Advanced Materials and Devices Lithium-ion batteries Three-dimensional electrodes LiFePO4 cathode Laser structuring Effect of groove morphology Rate capability |
| title | Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| title_full | Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| title_fullStr | Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| title_full_unstemmed | Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| title_short | Nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| title_sort | nanosecond laser structuring for improving rate capability of lithium iron phosphate cathode |
| topic | Lithium-ion batteries Three-dimensional electrodes LiFePO4 cathode Laser structuring Effect of groove morphology Rate capability |
| url | http://www.sciencedirect.com/science/article/pii/S2468217924001710 |
| work_keys_str_mv | AT dongkyupark nanosecondlaserstructuringforimprovingratecapabilityoflithiumironphosphatecathode AT dongkyounglee nanosecondlaserstructuringforimprovingratecapabilityoflithiumironphosphatecathode |