Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells
For the first time, the laser structuring of large-footprint electrodes with a loading of 4 mAh cm<sup>−2</sup> has been validated in a relevant environment, including subsequent multi-layer stack cell assembly and electrochemical characterization of the resulting high-capacity lithium-i...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-11-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/9/11/548 |
| _version_ | 1797460224349569024 |
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| author | Alexandra Meyer Penghui Zhu Anna Smith Wilhelm Pfleging |
| author_facet | Alexandra Meyer Penghui Zhu Anna Smith Wilhelm Pfleging |
| author_sort | Alexandra Meyer |
| collection | DOAJ |
| description | For the first time, the laser structuring of large-footprint electrodes with a loading of 4 mAh cm<sup>−2</sup> has been validated in a relevant environment, including subsequent multi-layer stack cell assembly and electrochemical characterization of the resulting high-capacity lithium-ion pouch cell prototypes, i.e., a technological readiness level of 6 has been achieved for the 3D battery concept. The structuring was performed using a high-power ultrashort-pulsed laser, resulting in well-defined line structures in electrodes without damaging the current collector, and without melting or altering the battery active materials. For cells containing structured electrodes, higher charge and discharge capacities were measured for C-rates >1C compared to reference cells based on unstructured electrodes. In addition, cells with structured electrodes showed a three-fold increase in cycle lifetime at a C-rate of 1C compared to those with reference electrodes. |
| first_indexed | 2024-03-09T17:02:06Z |
| format | Article |
| id | doaj.art-f5a37a21c58743c7919ec3bc0dcb5d6b |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-09T17:02:06Z |
| publishDate | 2023-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-f5a37a21c58743c7919ec3bc0dcb5d6b2023-11-24T14:29:10ZengMDPI AGBatteries2313-01052023-11-0191154810.3390/batteries9110548Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch CellsAlexandra Meyer0Penghui Zhu1Anna Smith2Wilhelm Pfleging3Institute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials—Energy Storage Systems (IAM-ESS), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, GermanyInstitute for Applied Materials—Applied Materials Physics (IAM-AWP), Karlsruhe Institute of Technology, 76344 Eggenstein-Leopoldshafen, GermanyFor the first time, the laser structuring of large-footprint electrodes with a loading of 4 mAh cm<sup>−2</sup> has been validated in a relevant environment, including subsequent multi-layer stack cell assembly and electrochemical characterization of the resulting high-capacity lithium-ion pouch cell prototypes, i.e., a technological readiness level of 6 has been achieved for the 3D battery concept. The structuring was performed using a high-power ultrashort-pulsed laser, resulting in well-defined line structures in electrodes without damaging the current collector, and without melting or altering the battery active materials. For cells containing structured electrodes, higher charge and discharge capacities were measured for C-rates >1C compared to reference cells based on unstructured electrodes. In addition, cells with structured electrodes showed a three-fold increase in cycle lifetime at a C-rate of 1C compared to those with reference electrodes.https://www.mdpi.com/2313-0105/9/11/548lithium-ion batterieslaser manufacturingupscaling |
| spellingShingle | Alexandra Meyer Penghui Zhu Anna Smith Wilhelm Pfleging Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells Batteries lithium-ion batteries laser manufacturing upscaling |
| title | Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells |
| title_full | Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells |
| title_fullStr | Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells |
| title_full_unstemmed | Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells |
| title_short | Gaining a New Technological Readiness Level for Laser-Structured Electrodes in High-Capacity Lithium-Ion Pouch Cells |
| title_sort | gaining a new technological readiness level for laser structured electrodes in high capacity lithium ion pouch cells |
| topic | lithium-ion batteries laser manufacturing upscaling |
| url | https://www.mdpi.com/2313-0105/9/11/548 |
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