Author(s)

Dong Hun Shin¹, Yun Seok Choi², Dong Jin Ku², Yong Cheol Hong^1*, Bong Ju Lee^2*

¹Department of Advanced Green Energy Environment, Handong Global University, Pohang, Korea.
¹Plasma Technology Research Center, National Fusion Research Institute, Gunsan, Korea.
²Department of Advanced Green Energy Environment, Handong Global University, Pohang, Korea.

The silicon oxide nano-powders (SiO_x-NPs) were obtained in an atmospheric microwave plasma torch using a gas-phase silicon tetrachloride (SiCl₄) with N₂ and H₂. The gas-phase SiCl₄ was injected with H₂ gas into the microwave plasma torch generated by N₂ and air swirl gas, and then the dark brown powders were deposited on the inner wall of a quartz tube. The sample was analyzed by an X-ray photoelectron spectroscopy (XPS), a scanning electron microscope (SEM), an energy dispersive spectrometer (EDS), and an X-ray diffraction (XRD). The average size and oxidation x values of synthesized SiO_x-NPs were approximately 230 nm and 0.91, respectively. Furthermore, the volumetric charge capacity is 1127 mAh/g and has 89.2% retention after 100 cycles.

Silicon Oxide, Secondly Battery, Microwave Plasma Torch, Volumetric Charge Capacity, Oxidation Value

Shin, D. , Choi, Y. , Ku, D. , Hong, Y. and Lee, B. (2016) Synthesis of SiOx Nano-Powders Using a Microwave Plasma Torch at Atmospheric Pressure. Soft Nanoscience Letters, 6, 31-36. doi: 10.4236/snl.2016.62003.