Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells
Silicon has become an integral negative electrode component for lithium-ion batteries in numerous applications including electric vehicles and renewable energy sources. However, its high capacity and low cycling stability represent a significant trade-off that limits its widespread implementation in...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/2313-0105/8/8/97 |
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| author | Imanol Landa-Medrano Aitor Eguia-Barrio Susan Sananes-Israel Willy Porcher Khiem Trad Arianna Moretti Diogo Vieira Carvalho Stefano Passerini Iratxe de Meatza |
| author_facet | Imanol Landa-Medrano Aitor Eguia-Barrio Susan Sananes-Israel Willy Porcher Khiem Trad Arianna Moretti Diogo Vieira Carvalho Stefano Passerini Iratxe de Meatza |
| author_sort | Imanol Landa-Medrano |
| collection | DOAJ |
| description | Silicon has become an integral negative electrode component for lithium-ion batteries in numerous applications including electric vehicles and renewable energy sources. However, its high capacity and low cycling stability represent a significant trade-off that limits its widespread implementation in high fractions in the negative electrode. Herein, we assembled high-capacity (1.8 Ah) cells using a nanoparticulate silicon–graphite (1:7.1) blend as the negative electrode material and a LiFePO<sub>4</sub>–LiNi<sub>0.5</sub>Mn<sub>0.3</sub>Co<sub>0.2</sub>O<sub>2</sub> (1:1) blend as the positive electrode. Two types of cells were constructed: cylindrical 18650 and pouch cells. These cells were subjected both to calendar and cycling aging, the latter exploring different working voltage windows (2.5–3.6 V, 3.6–4.5 V, and 2.5–4.5 V). In addition, one cell was opened and characterised at its end of life by means of X-ray diffraction, scanning electron microscopy, and further electrochemical tests of the aged electrodes. Si degradation was identified as the primary cause of capacity fade of the cells. This work highlights the need to develop novel strategies to mitigate the issues associated with the excessive volumetric changes of Si. |
| first_indexed | 2024-03-09T10:01:47Z |
| format | Article |
| id | doaj.art-a92c03536bb2472db6f68a56835096ca |
| institution | Directory Open Access Journal |
| issn | 2313-0105 |
| language | English |
| last_indexed | 2024-03-09T10:01:47Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Batteries |
| spelling | doaj.art-a92c03536bb2472db6f68a56835096ca2023-12-01T23:24:52ZengMDPI AGBatteries2313-01052022-08-01889710.3390/batteries8080097Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion CellsImanol Landa-Medrano0Aitor Eguia-Barrio1Susan Sananes-Israel2Willy Porcher3Khiem Trad4Arianna Moretti5Diogo Vieira Carvalho6Stefano Passerini7Iratxe de Meatza8CIDETEC Basque Research and Technology Alliance (BRTA), Paseo Miramon 196, 20014 Donostia-San Sebastian, SpainCIDETEC Basque Research and Technology Alliance (BRTA), Paseo Miramon 196, 20014 Donostia-San Sebastian, SpainCIDETEC Basque Research and Technology Alliance (BRTA), Paseo Miramon 196, 20014 Donostia-San Sebastian, SpainCEA-LITEN, Grenoble Université Alpes, 17 Avenue des Martyrs, 38000 Grenoble, FranceVITO/EnergyVille, Unit Energy Technology, Thor Park 8310, 3600 Genk, BelgiumHelmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyHelmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyHelmholtz Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, GermanyCIDETEC Basque Research and Technology Alliance (BRTA), Paseo Miramon 196, 20014 Donostia-San Sebastian, SpainSilicon has become an integral negative electrode component for lithium-ion batteries in numerous applications including electric vehicles and renewable energy sources. However, its high capacity and low cycling stability represent a significant trade-off that limits its widespread implementation in high fractions in the negative electrode. Herein, we assembled high-capacity (1.8 Ah) cells using a nanoparticulate silicon–graphite (1:7.1) blend as the negative electrode material and a LiFePO<sub>4</sub>–LiNi<sub>0.5</sub>Mn<sub>0.3</sub>Co<sub>0.2</sub>O<sub>2</sub> (1:1) blend as the positive electrode. Two types of cells were constructed: cylindrical 18650 and pouch cells. These cells were subjected both to calendar and cycling aging, the latter exploring different working voltage windows (2.5–3.6 V, 3.6–4.5 V, and 2.5–4.5 V). In addition, one cell was opened and characterised at its end of life by means of X-ray diffraction, scanning electron microscopy, and further electrochemical tests of the aged electrodes. Si degradation was identified as the primary cause of capacity fade of the cells. This work highlights the need to develop novel strategies to mitigate the issues associated with the excessive volumetric changes of Si.https://www.mdpi.com/2313-0105/8/8/97lithium-ion batteriessilicon graphite anodesLFPNMCelectrode manufacturingcell formats |
| spellingShingle | Imanol Landa-Medrano Aitor Eguia-Barrio Susan Sananes-Israel Willy Porcher Khiem Trad Arianna Moretti Diogo Vieira Carvalho Stefano Passerini Iratxe de Meatza Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells Batteries lithium-ion batteries silicon graphite anodes LFP NMC electrode manufacturing cell formats |
| title | Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells |
| title_full | Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells |
| title_fullStr | Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells |
| title_full_unstemmed | Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells |
| title_short | Insights into the Electrochemical Performance of 1.8 Ah Pouch and 18650 Cylindrical NMC:LFP|Si:C Blend Li-ion Cells |
| title_sort | insights into the electrochemical performance of 1 8 ah pouch and 18650 cylindrical nmc lfp si c blend li ion cells |
| topic | lithium-ion batteries silicon graphite anodes LFP NMC electrode manufacturing cell formats |
| url | https://www.mdpi.com/2313-0105/8/8/97 |
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