Resumen
In this paper, a laboratory chemical vapor deposition (CVD) reactor is described, which features an opposing screw rotating fluidized bed. The reactor efficiently concentrates powdered reactants in the reaction zone while maintaining fluidization independent of powder properties. This allows for lab-scale CVD processing of many small powder samples at high yields and without the need for re-adjustment of fluidization parameters for different samples. Alumina and graphite were carbon-coated and characterized in lithium batteries. The deposited carbon layer had a density of 1.84 g/ml and a capacity of 225 mA h/g when cycled between 7 mV and 0.9 V in lithium cells. Carbon coatings applied by this CVD reactor onto graphite particles were found to be effective at reducing surface reactions during cycling in lithium cells. We suggest that utilization of this opposing screw rotating fluidized bed reactor can effectively apply CVD coatings to small laboratory powder samples, with particular utility for Li-ion battery materials.
| Idioma original | English |
|---|---|
| Número de artículo | 075209 |
| Publicación | AIP Advances |
| Volumen | 12 |
| N.º | 7 |
| DOI | |
| Estado | Published - jul. 1 2022 |
Nota bibliográfica
Funding Information:The authors acknowledge financial support from NSERC and NOVONIX Battery Technology Solutions Inc. under the auspices of the NSERC Alliance Grants program (Grant No. AG ALLRP 558364-20). A Jobin Yvon T64000 Raman spectrometer located in the lab of Dr. K. C. Hewitt, Dalhousie University, Department of Physics and Atmospheric Science (e-mail: Kevin.Hewitt@Dal.ca, phone: 902-494-2315) was used to obtain some of the results presented in this paper. The instrument is funded by the Canada Foundation for Innovation and the Natural Sciences and Engineering Research Council of Canada and is part of a user facility available to industrial or academic researchers.
Publisher Copyright:
© 2022 Author(s).
ASJC Scopus Subject Areas
- General Physics and Astronomy