Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Hydrogen induced amorphization of LaMgNi4 phase in metal hydride alloys



Leonid A. Bendersky, Haoting Shen, Kwo Young, Taihei Ouchi


Hydrogen induced amorphization (HIA) of the LaMgNi4 phase at 30C was found in three LaMgNi4/LaNi5 two-phase metal hydride (MH)-forming alloys. The amorphization happened at the first dehydrogenation cycle from a fully hydrided alloy, and the process is reversible after annealing at 250C for 1 h. The hydrogen storage capacity of the LaMgNi4 phase in an amorphous state is higher than in its crystalline form. A scanning electron microscope study did not observe any significant changes in the shape of grains as a consequence of HIA and re-crystallization. A transmission electron microscope study confirmed the amorphous structure of the LaMgNi4 phase after HIA. These findings suggest a new way to improve the performance of MH alloys when used in electrochemical applications.
International Journal of Hydrogen Energy


Hydrogen absorbing alloys, Hydrogen induced amorphization, Metal hydride electrode, Transmission electron microscope, Re-crystallization


Bendersky, L. , Shen, H. , Young, K. and Ouchi, T. (2015), Hydrogen induced amorphization of LaMgNi4 phase in metal hydride alloys, International Journal of Hydrogen Energy (Accessed May 20, 2024)


If you have any questions about this publication or are having problems accessing it, please contact

Created August 2, 2015, Updated October 12, 2021