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

Title
Synthesis and Electrochemical Properties of Ru/PC/SiO2/Carbon Nanofiber Composites as Anode Materials in Lithium Secondary Batteries
Authors
Hwang, EunjeongHyun, YuraLee, Chang-Seop
Issue Date
2020-03
Citation
Journal of Nanoscience and Nanotechnology, 20(3), 1622-1630
Type
Article
Article Type
Article
Author Keywords
Chemical Vapor DepositionCarbon NanofiberSilicaAnode MaterialLithium Secondary Battery
Keywords
CARBON NANOFIBERSCATALYTIC GROWTHPERFORMANCENANOTUBESSILICON
ISSN
1533-4880
Abstract
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 degrees 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.
URI
http://hdl.handle.net/20.500.11750/10949
DOI
10.1166/jnn.2020.16953
Publisher
American Scientific Publishers
Files:
There are no files associated with this item.
Collection:
ETC1. Journal Articles


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