Synthesis of Core-Shell Si/Carbon Nanofibers on Silicon Substrates by Ultrasonic Spray Pyrolysis

Author:

Zhang Jianhui1,Kishi Naoki2,Soga Tetsuo2ORCID,Jimbo Takashi2,Tanji Takayoshi1

Affiliation:

1. EcoTopia Science Institute and Plasma Nanotechnology Research Center, Nagoya University, Chikusa, Nagoya 464-8603, Japan

2. Department of Frontier Materials, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya 466-8555, Japan

Abstract

We synthesized the core-shell Si/carbon nanofibers with diameters of 200–300 nm using ultrasonic spray pyrolysis with a phosphorus/ethanol mixture. High-resolution transmission electron microscopy (HRTEM) and energy-dispersive spectroscopy (EDS) investigations confirmed the core-shell structure, which consisted of a core of Si and a shell of amorphous carbon. The phosphorus atoms corroded the entire silicon substrate surface, and the Si-P liquid-catalyzed the solid-liquid-solid mechanism is proposed to explain the growth of the core-shell Si/carbon nanofibers.

Publisher

Hindawi Limited

Subject

General Materials Science

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