A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C
Herein, the post-mortem study on 16 Ah graphite//LiFePO<sub>4</sub> pouch cells is reported. Aiming to understand their failure mechanism, taking place when cycling at low temperature, the analysis of the cell components taken from different portions of the stacks and from different posi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-05-01
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| Series: | Batteries |
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| Online Access: | https://www.mdpi.com/2313-0105/5/2/45 |
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| author | Arianna Moretti Diogo Vieira Carvalho Niloofar Ehteshami Elie Paillard Willy Porcher David Brun-Buisson Jean-Baptiste Ducros Iratxe de Meatza Aitor Eguia-Barrio Khiem Trad Stefano Passerini |
| author_facet | Arianna Moretti Diogo Vieira Carvalho Niloofar Ehteshami Elie Paillard Willy Porcher David Brun-Buisson Jean-Baptiste Ducros Iratxe de Meatza Aitor Eguia-Barrio Khiem Trad Stefano Passerini |
| author_sort | Arianna Moretti |
| collection | DOAJ |
| description | Herein, the post-mortem study on 16 Ah graphite//LiFePO<sub>4</sub> pouch cells is reported. Aiming to understand their failure mechanism, taking place when cycling at low temperature, the analysis of the cell components taken from different portions of the stacks and from different positions in the electrodes, is performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Also, the recovered electrodes are used to reassemble half-cells for further cycle tests. The combination of the several techniques detects an inhomogeneous ageing of the electrodes along the stack and from the center to the edge of the electrode, most probably due to differences in the pressure experienced by the electrodes. Interestingly, XPS reveals that more electrolyte decomposition took place at the edge of the electrodes and at the outer part of the cell stack independently of the ageing conditions. Finally, the use of high cycling currents buffers the low temperature detrimental effects, resulting in longer cycle life and less inhomogeneities. |
| first_indexed | 2024-12-21T09:42:27Z |
| format | Article |
| id | doaj.art-30517dbbbfe94837bcbc0960510227e7 |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-12-21T09:42:27Z |
| publishDate | 2019-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-30517dbbbfe94837bcbc0960510227e72022-12-21T19:08:26ZengMDPI AGBatteries2313-01052019-05-01524510.3390/batteries5020045batteries5020045A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °CArianna Moretti0Diogo Vieira Carvalho1Niloofar Ehteshami2Elie Paillard3Willy Porcher4David Brun-Buisson5Jean-Baptiste Ducros6Iratxe de Meatza7Aitor Eguia-Barrio8Khiem Trad9Stefano Passerini10Helmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyHelmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyHelmholtz-Institute Münster (IEK 12), Forschungszentrum Jülich GmbH, Corrensstraße 46, 48149 Münster, GermanyHelmholtz-Institute Münster (IEK 12), Forschungszentrum Jülich GmbH, Corrensstraße 46, 48149 Münster, GermanyGrenoble Université Alpes, CEA-LITEN, 17 avenue des Martyrs, 38000 Grenoble, FranceGrenoble Université Alpes, CEA-LITEN, 17 avenue des Martyrs, 38000 Grenoble, FranceGrenoble Université Alpes, CEA-LITEN, 17 avenue des Martyrs, 38000 Grenoble, FranceCIDETEC Energy Storage, Parque Científico y Tecnológico de Gipuzkoa, Paseo Miramón 196, 20014 Donostia-San Sebastián, SpainCIDETEC Energy Storage, Parque Científico y Tecnológico de Gipuzkoa, Paseo Miramón 196, 20014 Donostia-San Sebastián, SpainVITO/EnergyVille, Thor Park 8300, 3600 Genk, BelgiumHelmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyHerein, the post-mortem study on 16 Ah graphite//LiFePO<sub>4</sub> pouch cells is reported. Aiming to understand their failure mechanism, taking place when cycling at low temperature, the analysis of the cell components taken from different portions of the stacks and from different positions in the electrodes, is performed by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoemission spectroscopy (XPS). Also, the recovered electrodes are used to reassemble half-cells for further cycle tests. The combination of the several techniques detects an inhomogeneous ageing of the electrodes along the stack and from the center to the edge of the electrode, most probably due to differences in the pressure experienced by the electrodes. Interestingly, XPS reveals that more electrolyte decomposition took place at the edge of the electrodes and at the outer part of the cell stack independently of the ageing conditions. Finally, the use of high cycling currents buffers the low temperature detrimental effects, resulting in longer cycle life and less inhomogeneities.https://www.mdpi.com/2313-0105/5/2/45lithium-ionbatteriesageingpost-mortem analysis |
| spellingShingle | Arianna Moretti Diogo Vieira Carvalho Niloofar Ehteshami Elie Paillard Willy Porcher David Brun-Buisson Jean-Baptiste Ducros Iratxe de Meatza Aitor Eguia-Barrio Khiem Trad Stefano Passerini A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C Batteries lithium-ion batteries ageing post-mortem analysis |
| title | A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C |
| title_full | A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C |
| title_fullStr | A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C |
| title_full_unstemmed | A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C |
| title_short | A Post-Mortem Study of Stacked 16 Ah Graphite//LiFePO<sub>4</sub> Pouch Cells Cycled at 5 °C |
| title_sort | post mortem study of stacked 16 ah graphite lifepo sub 4 sub pouch cells cycled at 5 °c |
| topic | lithium-ion batteries ageing post-mortem analysis |
| url | https://www.mdpi.com/2313-0105/5/2/45 |
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