Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries
Abstract A tri-dimensional interweaving kinked silicon nanowires (k-SiNWs) assembly, with a Ni current collector co-integrated, is evaluated as electrode configuration for lithium ion batteries. The large-scale fabrication of k-SiNWs is based on a procedure for continuous metal assisted chemical etc...
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Nature Portfolio
2018
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oai:doaj.org-article:4d3d61cc5f5249b79f91790f2769a7d42021-12-02T15:07:50ZKinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries10.1038/s41598-018-28108-32045-2322https://doaj.org/article/4d3d61cc5f5249b79f91790f2769a7d42018-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-28108-3https://doaj.org/toc/2045-2322Abstract A tri-dimensional interweaving kinked silicon nanowires (k-SiNWs) assembly, with a Ni current collector co-integrated, is evaluated as electrode configuration for lithium ion batteries. The large-scale fabrication of k-SiNWs is based on a procedure for continuous metal assisted chemical etching of Si, supported by a chemical peeling step that enables the reuse of the Si substrate. The kinks are triggered by a simple, repetitive etch-quench sequence in a HF and H2O2-based etchant. We find that the inter-locking frameworks of k-SiNWs and multi-walled carbon nanotubes exhibit beneficial mechanical properties with a foam-like behavior amplified by the kinks and a suitable porosity for a minimal electrode deformation upon Li insertion. In addition, ionic liquid electrolyte systems associated with the integrated Ni current collector repress the detrimental effects related to the Si-Li alloying reaction, enabling high cycling stability with 80% capacity retention (1695 mAh/gSi) after 100 cycles. Areal capacities of 2.42 mAh/cm2 (1276 mAh/gelectrode) can be achieved at the maximum evaluated thickness (corresponding to 1.3 mgSi/cm2). This work emphasizes the versatility of the metal assisted chemical etching for the synthesis of advanced Si nanostructures for high performance lithium ion battery electrodes.Georgiana SanduMichael CoulombierVishank KumarHailu G. KassaIonel AvramRan YeAntoine StopinDavide BonifaziJean-François GohyPhilippe LeclèreXavier GonzeThomas PardoenAlexandru VladSorin MelinteNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018) |
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Medicine R Science Q |
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Medicine R Science Q Georgiana Sandu Michael Coulombier Vishank Kumar Hailu G. Kassa Ionel Avram Ran Ye Antoine Stopin Davide Bonifazi Jean-François Gohy Philippe Leclère Xavier Gonze Thomas Pardoen Alexandru Vlad Sorin Melinte Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| description |
Abstract A tri-dimensional interweaving kinked silicon nanowires (k-SiNWs) assembly, with a Ni current collector co-integrated, is evaluated as electrode configuration for lithium ion batteries. The large-scale fabrication of k-SiNWs is based on a procedure for continuous metal assisted chemical etching of Si, supported by a chemical peeling step that enables the reuse of the Si substrate. The kinks are triggered by a simple, repetitive etch-quench sequence in a HF and H2O2-based etchant. We find that the inter-locking frameworks of k-SiNWs and multi-walled carbon nanotubes exhibit beneficial mechanical properties with a foam-like behavior amplified by the kinks and a suitable porosity for a minimal electrode deformation upon Li insertion. In addition, ionic liquid electrolyte systems associated with the integrated Ni current collector repress the detrimental effects related to the Si-Li alloying reaction, enabling high cycling stability with 80% capacity retention (1695 mAh/gSi) after 100 cycles. Areal capacities of 2.42 mAh/cm2 (1276 mAh/gelectrode) can be achieved at the maximum evaluated thickness (corresponding to 1.3 mgSi/cm2). This work emphasizes the versatility of the metal assisted chemical etching for the synthesis of advanced Si nanostructures for high performance lithium ion battery electrodes. |
| format |
article |
| author |
Georgiana Sandu Michael Coulombier Vishank Kumar Hailu G. Kassa Ionel Avram Ran Ye Antoine Stopin Davide Bonifazi Jean-François Gohy Philippe Leclère Xavier Gonze Thomas Pardoen Alexandru Vlad Sorin Melinte |
| author_facet |
Georgiana Sandu Michael Coulombier Vishank Kumar Hailu G. Kassa Ionel Avram Ran Ye Antoine Stopin Davide Bonifazi Jean-François Gohy Philippe Leclère Xavier Gonze Thomas Pardoen Alexandru Vlad Sorin Melinte |
| author_sort |
Georgiana Sandu |
| title |
Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| title_short |
Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| title_full |
Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| title_fullStr |
Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| title_full_unstemmed |
Kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| title_sort |
kinked silicon nanowires-enabled interweaving electrode configuration for lithium-ion batteries |
| publisher |
Nature Portfolio |
| publishDate |
2018 |
| url |
https://doaj.org/article/4d3d61cc5f5249b79f91790f2769a7d4 |
| work_keys_str_mv |
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