TY - JOUR
T1 - Energy distribution of hydrogen sites for MgNi0.86M10.03 (M1 = Cr, Fe, Co; Mn) alloys desorbing hydrogen at low temperature
AU - Tsushio, Y.
AU - Enoki, H.
AU - Akiba, E.
N1 - Funding Information:
This work was financially supported by The New Energy and Industrial Technology Development organization (NEDO) and carried out under the “International Clean Energy Technology Utilizing Hydrogen (World Energy Network ; WE-NET) Project”.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999
Y1 - 1999
N2 - The energy distribution of hydrogen sites for MgNi0.86M10.03 (M1 = Cr, Fe, Co, Mn) alloys prepared by the ball milling technique was investigated. From the results of DSC, TG analysis and the calculation of the enthalpy of hydrogenation, we derived that the Cr and Fe-substituted alloys have a broad energy distribution and the averaged enthalpy of hydrogenation is about -82 kJ mol-1 H2-1. Because of the broad distribution, the hydride of larger enthalpy decomposes at low temperature. However, the Co and Mn-substituted alloys have sharp energy distributions though the averaged value of hydrogenation is about -67 kJ mol-1 H2-1. Therefore, these alloys do not desorb hydrogen at low temperature. In order to develop Mg-based alloys that desorb hydrogen at low temperature, the dependence of substitution element on the energy distribution should be considered and substitution elements that make the energy distribution broad must be selected.
AB - The energy distribution of hydrogen sites for MgNi0.86M10.03 (M1 = Cr, Fe, Co, Mn) alloys prepared by the ball milling technique was investigated. From the results of DSC, TG analysis and the calculation of the enthalpy of hydrogenation, we derived that the Cr and Fe-substituted alloys have a broad energy distribution and the averaged enthalpy of hydrogenation is about -82 kJ mol-1 H2-1. Because of the broad distribution, the hydride of larger enthalpy decomposes at low temperature. However, the Co and Mn-substituted alloys have sharp energy distributions though the averaged value of hydrogenation is about -67 kJ mol-1 H2-1. Therefore, these alloys do not desorb hydrogen at low temperature. In order to develop Mg-based alloys that desorb hydrogen at low temperature, the dependence of substitution element on the energy distribution should be considered and substitution elements that make the energy distribution broad must be selected.
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U2 - 10.1016/S0925-8388(98)01056-1
DO - 10.1016/S0925-8388(98)01056-1
M3 - Article
AN - SCOPUS:0033099162
VL - 285
SP - 298
EP - 301
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
IS - 1-2 Complete
ER -