Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries
Abstract Alternative anode materials with increased theoretical specific capacities are under scrutinity as a replacement to graphite in lithium‐ion batteries (LiBs). Silicon oxides offer increased capacities compared to graphite and do not suffer the same level of material expansion as pure Si. Con...
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Wiley-VCH
2024-12-01
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| Series: | Macromolecular Materials and Engineering |
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| Online Access: | https://doi.org/10.1002/mame.202400202 |
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| author | Anne Beaucamp Amaia Moreno Calvo Deaglán Bowman Clotilde Techouyeres David Mc Nulty Erlantz Lizundia Maurice N. Collins |
| author_facet | Anne Beaucamp Amaia Moreno Calvo Deaglán Bowman Clotilde Techouyeres David Mc Nulty Erlantz Lizundia Maurice N. Collins |
| author_sort | Anne Beaucamp |
| collection | DOAJ |
| description | Abstract Alternative anode materials with increased theoretical specific capacities are under scrutinity as a replacement to graphite in lithium‐ion batteries (LiBs). Silicon oxides offer increased capacities compared to graphite and do not suffer the same level of material expansion as pure Si. Consequently, they are an intermediate commercial anode material, on the pathway toward pure Si anodes. In this study, stable Silica/carbon (SiO2/C) nanofibers are successfully developed from tetraethyl orthosilicate (TEOS) using poly(vinylpyrrolidone) (PVP). The fibers show excellent stability after calcination, with silica evenly dispersed within the fibers exhibiting a surface area of 327 m2 g−1. This study demonstrates that the electrochemical performance of SiO2/C composite anodes is significantly influenced by the silica content. SiO2/C composites with ≈68 at% SiO2 achieve reversible capacities of 315.6 and 300.9 mAh g−1, after the 2nd, and 800th cycles, respectively, at a specific current of 100 mA g−1, with a remarkable capacity retention of 95.3%. In a second stage, lignin is added as a potential nanostructuring agent. The addition of lignin to the sample reduces the amount of silica without significantly impacting its performance and stability. Tailoring the composition of SiO2/C composite anodes enables stable capacity retention over the course of hundreds of cycles. |
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| id | doaj-art-4ae94e88c5a04b99b2d3fc814be69848 |
| institution | Kabale University |
| issn | 1438-7492 1439-2054 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Wiley-VCH |
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| series | Macromolecular Materials and Engineering |
| spelling | doaj-art-4ae94e88c5a04b99b2d3fc814be698482024-12-17T01:22:03ZengWiley-VCHMacromolecular Materials and Engineering1438-74921439-20542024-12-0130912n/an/a10.1002/mame.202400202Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion BatteriesAnne Beaucamp0Amaia Moreno Calvo1Deaglán Bowman2Clotilde Techouyeres3David Mc Nulty4Erlantz Lizundia5Maurice N. Collins6School of Engineering University of Limerick Limerick Munster V94 T9PX IrelandLife Cycle Thinking Group Department of Graphic Design and Engineering Projects University of the Basque Country (UPV/EHU) Plaza Ingeniero Torres Quevedo 1 Bilbao Biscay 48013 SpainDepartment of Chemical Sciences and Bernal Institute University of Limerick Limerick V94 T9PX IrelandSchool of Engineering University of Limerick Limerick Munster V94 T9PX IrelandDepartment of Chemical Sciences and Bernal Institute University of Limerick Limerick V94 T9PX IrelandLife Cycle Thinking Group Department of Graphic Design and Engineering Projects University of the Basque Country (UPV/EHU) Plaza Ingeniero Torres Quevedo 1 Bilbao Biscay 48013 SpainSchool of Engineering University of Limerick Limerick Munster V94 T9PX IrelandAbstract Alternative anode materials with increased theoretical specific capacities are under scrutinity as a replacement to graphite in lithium‐ion batteries (LiBs). Silicon oxides offer increased capacities compared to graphite and do not suffer the same level of material expansion as pure Si. Consequently, they are an intermediate commercial anode material, on the pathway toward pure Si anodes. In this study, stable Silica/carbon (SiO2/C) nanofibers are successfully developed from tetraethyl orthosilicate (TEOS) using poly(vinylpyrrolidone) (PVP). The fibers show excellent stability after calcination, with silica evenly dispersed within the fibers exhibiting a surface area of 327 m2 g−1. This study demonstrates that the electrochemical performance of SiO2/C composite anodes is significantly influenced by the silica content. SiO2/C composites with ≈68 at% SiO2 achieve reversible capacities of 315.6 and 300.9 mAh g−1, after the 2nd, and 800th cycles, respectively, at a specific current of 100 mA g−1, with a remarkable capacity retention of 95.3%. In a second stage, lignin is added as a potential nanostructuring agent. The addition of lignin to the sample reduces the amount of silica without significantly impacting its performance and stability. Tailoring the composition of SiO2/C composite anodes enables stable capacity retention over the course of hundreds of cycles.https://doi.org/10.1002/mame.202400202anodecapacity retentionligninLi‐ion batteriesSi/C hybrid nanofibrestemplating |
| spellingShingle | Anne Beaucamp Amaia Moreno Calvo Deaglán Bowman Clotilde Techouyeres David Mc Nulty Erlantz Lizundia Maurice N. Collins Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries Macromolecular Materials and Engineering anode capacity retention lignin Li‐ion batteries Si/C hybrid nanofibres templating |
| title | Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries |
| title_full | Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries |
| title_fullStr | Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries |
| title_full_unstemmed | Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries |
| title_short | Sustainable Silica‐Carbon Nanofiber Hybrid Composite Anodes for Lithium‐Ion Batteries |
| title_sort | sustainable silica carbon nanofiber hybrid composite anodes for lithium ion batteries |
| topic | anode capacity retention lignin Li‐ion batteries Si/C hybrid nanofibres templating |
| url | https://doi.org/10.1002/mame.202400202 |
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