Waste-glass-derived silicon/CNTs composite with strong Si-C covalent bonding for advanced anode materials in lithium-ion batteries
| Autor: | Siguang Guo, Biao Gao, Jijiang Fu, Paul K. Chu, Kaifu Huo, Xuming Zhang, Jiaguo Deng, Liu Yifan, Shixiong Mei, Xiang Peng |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Nanocomposite
Materials science Silicon General Physics and Astronomy chemistry.chemical_element Nanoparticle 02 engineering and technology Surfaces and Interfaces General Chemistry Carbon nanotube Conductivity 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films law.invention Anode chemistry Chemical engineering law Lithium 0210 nano-technology Carbon |
| Zdroj: | Applied Surface Science. 563:150280 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2021.150280 |
| Popis: | Silicon is regarded to be promising anode materials in next-generation rechargeable lithium-ion batteries due to the high theoretical capacity and natural abundance. In order to overcome intrinsic drawbacks such as the low conductivity and unstable solid electrolyte interface film, different Si and carbon (C) nanocomposites have been designed but they are often plagued by the complex structural design, high preparation cost, and weak interactions between C and Si resulting in limited electrochemical performance. Herein, a facile, eco-friendly, low-cost, and controllable route is described to prepare Si/carbon nanotube composites with strong Si-C covalent bonding from recycled waste glass and commercial carbon nanotubes (g-Si/CNTs) via simple mechanical ball milling and magnesiothermic reduction (MR). Owing to the conductive CNTs network, strong Si-C covalent bonds are formed in situ between the CNTs and Si nanoparticles and consequently, the g-Si/CNTs electrode shows an excellent specific capacity of ~895 mAh g−1 as well as 84.3% capacity retention at 0.1 A g−1 after 200 cycles. The g-Si/CNTs composite produced from recycled waste glass has large potential as anode materials in high-energy lithium-ion batteries. |
| Databáze: | OpenAIRE |
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