Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage
Endowing Si-based anodes with both high areal and volumetric capacity is of great importance for their practical application, but this remains extremely challenging. Si-based anodes with high areal capacity are generally designed into porous structures to buffer the drastic volume change during char...
| Main Authors: | , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Online Access: | https://hdl.handle.net/10356/168894 |
| _version_ | 1826121269991440384 |
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| author | Li, Wangyang Sun, Leimeng Cai, Weifan Wang, Xinghui Zhang, Qing |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Li, Wangyang Sun, Leimeng Cai, Weifan Wang, Xinghui Zhang, Qing |
| author_sort | Li, Wangyang |
| collection | NTU |
| description | Endowing Si-based anodes with both high areal and volumetric capacity is of great importance for their practical application, but this remains extremely challenging. Si-based anodes with high areal capacity are generally designed into porous structures to buffer the drastic volume change during charge/discharge process, which leads to a compromise in volumetric capacities. Herein, through a layer-by-layer technique, multilayer vertically aligned carbon nanotubes supported Si film (VACNTs@Si) with ferroconcrete-like sructures are developed to enhance both areal and volumetric capacities. The VACNTs frameworks facilitate electron transport and stabilize the andoe structure during cycling, while the Si cladding layer can provide a high capacity. A 3-layer VACNTs@Si film exhibits an superior areal/volumetric capacity of 3.59 mAh cm−2/3355.1 mAh cm−3, and high capacity retention of ∼79% after 200 cycles. The ferroconcrete-like structural design offers a promising strategy for the fabrication of the electrodes with ultra-high areal and volumetric capacities. |
| first_indexed | 2024-10-01T05:29:36Z |
| format | Journal Article |
| id | ntu-10356/168894 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:29:36Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1688942023-06-21T06:59:43Z Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage Li, Wangyang Sun, Leimeng Cai, Weifan Wang, Xinghui Zhang, Qing School of Electrical and Electronic Engineering Engineering::Electrical and electronic engineering Si Film Areal Capacity Endowing Si-based anodes with both high areal and volumetric capacity is of great importance for their practical application, but this remains extremely challenging. Si-based anodes with high areal capacity are generally designed into porous structures to buffer the drastic volume change during charge/discharge process, which leads to a compromise in volumetric capacities. Herein, through a layer-by-layer technique, multilayer vertically aligned carbon nanotubes supported Si film (VACNTs@Si) with ferroconcrete-like sructures are developed to enhance both areal and volumetric capacities. The VACNTs frameworks facilitate electron transport and stabilize the andoe structure during cycling, while the Si cladding layer can provide a high capacity. A 3-layer VACNTs@Si film exhibits an superior areal/volumetric capacity of 3.59 mAh cm−2/3355.1 mAh cm−3, and high capacity retention of ∼79% after 200 cycles. The ferroconcrete-like structural design offers a promising strategy for the fabrication of the electrodes with ultra-high areal and volumetric capacities. Ministry of Education (MOE) This work was financially supported by National Natural Science Foundation of China [No. U22A20118]; Fujian Science & Technology Innovation Laboratory for Optoelectronic Information of China (grant number 2021ZR146 and 2021ZZ122); MOE AcRF Tier2 (2018-T2-2- 005), Singapore. X. W. specially thanks the Award Program for Fujian Minjiang Scholar Professorship. 2023-06-21T06:59:42Z 2023-06-21T06:59:42Z 2023 Journal Article Li, W., Sun, L., Cai, W., Wang, X. & Zhang, Q. (2023). Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage. Scripta Materialia, 229, 115389-. https://dx.doi.org/10.1016/j.scriptamat.2023.115389 1359-6462 https://hdl.handle.net/10356/168894 10.1016/j.scriptamat.2023.115389 2-s2.0-85149401290 229 115389 en 2018-T2-2- 005 Scripta Materialia © 2023 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Electrical and electronic engineering Si Film Areal Capacity Li, Wangyang Sun, Leimeng Cai, Weifan Wang, Xinghui Zhang, Qing Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title | Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title_full | Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title_fullStr | Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title_full_unstemmed | Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title_short | Ferroconcrete-like multilayer VACNTs@Si film for ultra-high areal and volumetric Li-ion storage |
| title_sort | ferroconcrete like multilayer vacnts si film for ultra high areal and volumetric li ion storage |
| topic | Engineering::Electrical and electronic engineering Si Film Areal Capacity |
| url | https://hdl.handle.net/10356/168894 |
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