Journal
SCRIPTA MATERIALIA
Volume 192, Issue -, Pages 49-54Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2020.09.048
Keywords
Silicon; Chemical Vapor Deposition; Fluidized Bed Reactors; Carbon Nanotubes Microspheres; Anode
Categories
Funding
- Key Project of Department of Education of Guangdong Province [2016GCZX008]
- Project of Engineering Research Center of Foshan [20172010018]
- Foshan Functional Polymer Engineering Center [2016GA10162]
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In this study, Si/carbon nanotube microspheres were synthesized through spray drying and chemical vapor deposition, showing higher specific capacity as an anode additive for lithium-ion batteries compared to commercial graphite, and effectively reducing the preparation cost of nano-Si.
Herein, we synthesized Si/carbon nanotube microspheres (Si/CNTsS) via a two-step process, where the carbon nanotube microspheres (CNTsS) were first fabricated by spray drying, followed by the deposition of nano-silicon on/into the obtained CNTsS through chemical vapor deposition (CVD) in fluidized bed reactors (FBR). By adding the Si/CNTsS materials as an anode additive with the mass ratio of 10% to graphite, the hybrid anode possess a high specific capacity of over 500 mAh/g, much higher than that of commercial graphite (350mAhg(-1)). Most strikingly, the preparation cost of nano-Si can be reduced effectively via the CVD in FBR method, thus the responding Si/CNTsS have the potential to be widely used as practical anode additive in high-energy-density lithium-ion batteries. (C) 2020 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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