Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites
In this work, we present the characterization and electrochemical performance of various ternary silicon oxycarbide/graphite/tin (SiOC/C/Sn) nanocomposites as anodes for lithium-ion batteries. In binary SiOC/Sn composites, tin nanoparticles may be produced in situ via carbothermal reduction of SnO&l...
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| Format: | Article |
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MDPI AG
2022-01-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/3/410 |
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| author | Dominik Knozowski Pradeep Vallachira Warriam Sasikumar Piotr Madajski Gurdial Blugan Maria Gazda Natalia Kovalska Monika Wilamowska-Zawłocka |
| author_facet | Dominik Knozowski Pradeep Vallachira Warriam Sasikumar Piotr Madajski Gurdial Blugan Maria Gazda Natalia Kovalska Monika Wilamowska-Zawłocka |
| author_sort | Dominik Knozowski |
| collection | DOAJ |
| description | In this work, we present the characterization and electrochemical performance of various ternary silicon oxycarbide/graphite/tin (SiOC/C/Sn) nanocomposites as anodes for lithium-ion batteries. In binary SiOC/Sn composites, tin nanoparticles may be produced in situ via carbothermal reduction of SnO<sub>2</sub> to metallic Sn, which consumes free carbon from the SiOC ceramic phase, thereby limiting the carbon content in the final ceramic nanocomposite. Therefore, to avoid drawbacks with carbon depletion, we used graphite as a substitute during the synthesis of precursors. The ternary composites were synthesized from liquid precursors and flake graphite using the ultrasound-assisted hydrosilylation method and pyrolysis at 1000 °C in an Ar atmosphere. The role of the graphitic component is to ensure good electric conductivity and the softness of the material, which are crucial for long term stability during alloying–dealloying processes. The presented approach allows us to increase the content of the tin precursor from 40 wt.% to 60 wt.% without losing the electrochemical stability of the final material. The charge/discharge capacity (at 372 mA g<sup>−1</sup> current rate) of the tailored SiOC/C/Sn composite is about 100 mAh g<sup>−1</sup> higher compared with that of the binary SiOC/Sn composite. The ternary composites, however, are more sensitive to high current rates (above 372 mA g<sup>−1</sup>) compared to the binary one because of the presence of graphitic carbon. |
| first_indexed | 2024-03-09T23:24:39Z |
| format | Article |
| id | doaj.art-9c563d2bdb084d208656009bab245f3f |
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| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T23:24:39Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-9c563d2bdb084d208656009bab245f3f2023-11-23T17:20:21ZengMDPI AGNanomaterials2079-49912022-01-0112341010.3390/nano12030410Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin NanocompositesDominik Knozowski0Pradeep Vallachira Warriam Sasikumar1Piotr Madajski2Gurdial Blugan3Maria Gazda4Natalia Kovalska5Monika Wilamowska-Zawłocka6Department of Energy Conversion and Storage, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, PolandLaboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science & Technology, CH-8600 Dübendorf, SwitzerlandFaculty of Chemistry, Nicolaus Copernicus University in Torun, 87-100 Toruń, PolandLaboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science & Technology, CH-8600 Dübendorf, SwitzerlandDepartment of Solid State Physics, Faculty of Applied Physics and Mathematics, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, PolandLaboratory for High Performance Ceramics, Empa, Swiss Federal Laboratories for Materials Science & Technology, CH-8600 Dübendorf, SwitzerlandDepartment of Energy Conversion and Storage, Faculty of Chemistry, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, PolandIn this work, we present the characterization and electrochemical performance of various ternary silicon oxycarbide/graphite/tin (SiOC/C/Sn) nanocomposites as anodes for lithium-ion batteries. In binary SiOC/Sn composites, tin nanoparticles may be produced in situ via carbothermal reduction of SnO<sub>2</sub> to metallic Sn, which consumes free carbon from the SiOC ceramic phase, thereby limiting the carbon content in the final ceramic nanocomposite. Therefore, to avoid drawbacks with carbon depletion, we used graphite as a substitute during the synthesis of precursors. The ternary composites were synthesized from liquid precursors and flake graphite using the ultrasound-assisted hydrosilylation method and pyrolysis at 1000 °C in an Ar atmosphere. The role of the graphitic component is to ensure good electric conductivity and the softness of the material, which are crucial for long term stability during alloying–dealloying processes. The presented approach allows us to increase the content of the tin precursor from 40 wt.% to 60 wt.% without losing the electrochemical stability of the final material. The charge/discharge capacity (at 372 mA g<sup>−1</sup> current rate) of the tailored SiOC/C/Sn composite is about 100 mAh g<sup>−1</sup> higher compared with that of the binary SiOC/Sn composite. The ternary composites, however, are more sensitive to high current rates (above 372 mA g<sup>−1</sup>) compared to the binary one because of the presence of graphitic carbon.https://www.mdpi.com/2079-4991/12/3/410silicon oxycarbidetin nanoparticlesLi-ion batteryternary compositesgraphite |
| spellingShingle | Dominik Knozowski Pradeep Vallachira Warriam Sasikumar Piotr Madajski Gurdial Blugan Maria Gazda Natalia Kovalska Monika Wilamowska-Zawłocka Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites Nanomaterials silicon oxycarbide tin nanoparticles Li-ion battery ternary composites graphite |
| title | Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites |
| title_full | Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites |
| title_fullStr | Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites |
| title_full_unstemmed | Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites |
| title_short | Material Design and Optimisation of Electrochemical Li-Ion Storage Properties of Ternary Silicon Oxycarbide/Graphite/Tin Nanocomposites |
| title_sort | material design and optimisation of electrochemical li ion storage properties of ternary silicon oxycarbide graphite tin nanocomposites |
| topic | silicon oxycarbide tin nanoparticles Li-ion battery ternary composites graphite |
| url | https://www.mdpi.com/2079-4991/12/3/410 |
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