Hostname: page-component-cd9895bd7-gxg78 Total loading time: 0 Render date: 2024-12-28T17:57:56.997Z Has data issue: false hasContentIssue false
  • English
  • Français

Anisotropic Hydrogen Permeation in Nano/Poly Crystalline-Nickel Membranes

Published online by Cambridge University Press:  11 February 2011

Y. Cao ,
H. Li ,
J. A. Szpunar  and
W. T. Shmayda
Y. Cao
Affiliation:
Department of Metals and Materials Engineering, McGill University, Montreal, PQ, H3A 2B2, Canada
H. Li
Affiliation:
Department of Metals and Materials Engineering, McGill University, Montreal, PQ, H3A 2B2, Canada
J. A. Szpunar
Affiliation:
Department of Metals and Materials Engineering, McGill University, Montreal, PQ, H3A 2B2, Canada
W. T. Shmayda
Affiliation:
Lab for Laser Energetics, University of Rochester, Rochester, NY, 14623–1299, USA
Get access

Abstract

Bilayer nickel membranes have been prepared using electrodeposition to grow polycrystalline nickel on a nanocrystalline nickel substrate. When hydrogen is charged from the nano-Ni side of the nano-Ni and poly-Ni composite membrane, the permeation current increases rapidly, then the membrane releases hydrogen faster during decay. When hydrogen is charged from the poly-Ni side of the same composite membrane, the permeation current rises gradually and takes a longer time to reach steady state. Also the permeability of nano-poly-Ni membrane is eight times higher than that of poly-nano-Ni membrane. The diffusivity for the nano-Ni side charging in a nano-poly-Ni membrane is two times higher than that of poly-Ni side charging of the same membrane. The diffusivity and permeability of nano-poly-Ni membranes are smaller than those for nano-Ni membranes, but larger than those for poly-Ni membranes. Using this anisotropic behavior, one can manipulate hydrogen permeation through composite membranes. A hydrogen permeation model for bilayer membranes is proposed to simulate diffusion in a nano-Ni and poly-Ni bilayer membrane in two-directions of charging. The experimental data is in good qualitative agreement with the model.

Keywords

Hydrogen PermeationNanocrystallineNickelBilayer Membranes
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 752: Symposium AA – Membranes–Preparation, Properties and Applications , 2002 , AA12.4
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCE

1. Moss, T. S., Peachey, N. M., Snow, R. C. and Dye, R. C., Int. Hydrogen Energy, 23, 99 (1998).Google Scholar
2. Weidinger, A., Nagengast, D., Rehm, Ch., Klose, F. and Pietzak, B., Thin Solid Films, 275, 48, (1996).Google Scholar
3. Yoon, Y. G. and Pyun, S., Journal of Alloys and Compounds, 243, 45 (1996).Google Scholar
4. Eriksson, M. and Ekedahi, L. J., Applied Physics, 83, 3947 (1998).Google Scholar
5. Collins, J. P. and Way, J. D., J. Membrane Sci., 32, 3006 (1993).Google Scholar
6. Cao, Y., Ph. D. Thesis, McGill University, (2002).Google Scholar
7. Devanathan, M. A. V. and Stachuski, Z., Proc. Roy. Soc., 270A, 90, (1962).Google Scholar
8. Crank, J., The Mathematics of Diffusion, Clarendon Press, Oxford, (1975).Google Scholar
9. Arantes, D., Huang, X. Y., Marte, C. and Kirchheim, R., Acta Metall., 41, 3215, (1993).Google Scholar