Effect of Applied External Stress on Hydrogen Desorption from Metal Hydrides

Abstract:

Article Preview

The effect of hydrostatic pressure mechanically applied to hydride on the equilibrium hydrogen gas pressure and temperature have been examined theoretically. From free energy calculations where elastic energy is taken into account, equilibrium gas pressure and temperature increases and decreases with increasing applied compressive stress, respectively. In the case of magnesium hydride, equilibrium temperature decreases to 63 °C at the hydrogen gas pressure being 1 atom when volume expansion at hydriding is perfectly suppressed by an external compressive stress. The temperature is remarkably lower than that obtained by alloying various elements.

Info:

Periodical:

Advanced Materials Research (Volumes 26-28)

Edited by:

Young Won Chang, Nack J. Kim and Chong Soo Lee

Pages:

217-220

DOI:

10.4028/www.scientific.net/AMR.26-28.217

Citation:

R. Matsumoto et al., "Effect of Applied External Stress on Hydrogen Desorption from Metal Hydrides", Advanced Materials Research, Vols. 26-28, pp. 217-220, 2007

Online since:

October 2007

Export:

Price:

$35.00

In order to see related information, you need to Login.

In order to see related information, you need to Login.