Affordable Access

Publisher Website

Effect of neodymium, copper and aluminum on the hydriding characteristics of CeNi5

Journal of the Less Common Metals
Publication Date
DOI: 10.1016/0022-5088(84)90206-6
  • Chemistry
  • Engineering


Abstract The hydrides of Ce 0.7Nd 0.3Ni 2.5Cu 2.5 and the CeNi 5− x− y Cu x Al y quaternaries with 2 < x < 2.5, 0.2 < y < 0.5 and 2.5 < x+ y < 3.0 were prepared and studied as a function of composition, temperature (0–120°C) and hydrogen pressure (0.01–50 atm). The binary CeNi 5, which is not a hydrogen absorber, becomes an excellent hydrogen storage material in the presence of neodymium, copper and aluminum. The hydrogen densities of these quaternary alloys relative to liquid hydrogen are in the range 0.9–1.2. Both copper and aluminum reduce the vapor pressure of the hydride, but the latter has a more dramatic effect. The kinetics of hydrogen sorption are extremely rapid. The enthalpy and entropy of dehydrogenation are in the range 14.2–26.5 kJ (mol H 2) −1 and 49–70 J mol −1 K −1 respectively. The excellent physicochemical properties and the lower cost of the CeNi 5− x− y Cu x Al y quaternaries make them quite attractive for a variety of engineering applications.

There are no comments yet on this publication. Be the first to share your thoughts.


Seen <100 times

More articles like this

dHvA effect and magnetoresistance in CeNi2Al5

on Journal of Magnetism and Magne... Jan 01, 1998

The effect of substitution of Mn or Al on the hydr...

on International Journal of Hydro... Jan 01, 1985

Phonon-assisted electron resonance scattering effe...

on Solid State Communications Jan 01, 1992

Hydriding–dehydriding characteristics of NdNi5and...

on Journal of Alloys and Compound... Jan 01, 2000
More articles like this..