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Home / Journal of Nanoscience and Nanotechnology, Volume 20, Number 3

Synthesis and Electrochemical Properties of Ru/PC/SiO2/Carbon Nanofiber Composites as Anode Materials in Lithium Secondary Batteries

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Carbon nanofibers (CNFs) were grown by chemical vapor deposition method on C-fiber textiles that Ni and Cu catalysts were pre-deposited via electrophoretic deposition. Carbon nanofibers were oxidized by nitric acid to create hydroxyl group and then coated with silica layer via hydrolysis of TEOS (Tetraethyl orthosilicate). Pyrolytic carbon was coated on the SiO2/CNFs composite by flowing ethylene gas at 900 °C, and then Ru was dip-coated to prepare Ru/PC/SiO2/CNFs composite. The morphologies, compositions, and crystal qualities of CNFs and the various carbon nanofiber composites were characterized by SEM, TEM, XPS, and Raman spectroscopy. The electrochemical properties and the capacitance of the carbon nanofibers and its composites as anode materials of Li secondary batteries were investigated by galvanostatic charge-discharge and cyclic voltammetry. The galvanostatic charge/discharge results of the CNFs, SiO2/CNFs composite, (PC)SiO2/CNFs composite, and Ru/(PC)SiO2/CNFs composite exhibited maximum capacities of 809 mAh/g, 1,289 mAh/g, 2,469 mAh/g, and 2,451 mAh/g, respectively.

Keywords: Anode Material; Carbon Nanofiber; Chemical Vapor Deposition; Lithium Secondary Battery; Silica

Document Type: Research Article

Affiliations: Department of Chemistry, Keimyung University, Daegu 42601, Korea

Publication date: 01 March 2020

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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