Paper Title:
Enhanced Hydrogen Storage in MWCNTs Decorated by Electroless Nickel Nanoparticles Deposited in Supercritical CO2 Bath
  Abstract

Nano-sized nickel particles were dispersed on multi-walled carbon nanotubes (MWCNTs) via an improved electroless deposition route using a supercritical CO2 fluid. The microstructure, chemical composition and crystallinity of the Ni-decorated CNTs were examined using a transmission electron microscope (TEM), an X-ray energy dispersive spectrometer (EDS), and an X-ray diffractometer (XRD), respectively. The analytical results indicate that, with assistance of the supercritical fluid, Ni nanoparticles with a diameter of approximately 10 nm can be uniformly dispersed on the surface of CNTs. The hydrogen storage capacity of the Ni-decorated CNTs was evaluated with a high-pressure microbalance at room temperature and under a hydrogen pressure of 6.89 MPa. The measured hydrogen adsorption amount of the Ni/CNTs nanocomposite was 1.06 wt%, which was much higher than 0.33 wt% found for the plain CNTs.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
1148-1151
DOI
10.4028/www.scientific.net/MSF.638-642.1148
Citation
C. Y. Chen, J. K. Chang, K. Y. Lin, S. T. Chung, W. T. Tsai, "Enhanced Hydrogen Storage in MWCNTs Decorated by Electroless Nickel Nanoparticles Deposited in Supercritical CO2 Bath", Materials Science Forum, Vols. 638-642, pp. 1148-1151, 2010
Online since
January 2010
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$32.00
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