(177-0107)Destabilizing the dehydriding thermodynamics of MgH2 by reversible intermetallics formation in Mg?Ag?Zn ternary alloys

摘要

Mg is considered to be a very attractive hydrogen storage material owing to itshigh hydrogen storage capacity, excellent reversibility and abundant resource. However, the highoperating temperature due to the high thermodynamic stability of MgH2 hinders its practicalapplication. A new route, expressed as “destabilizing the thermodynamics of MgH2 by reversibleintermetallics formation” (DTRIF), has been realized in Mg-based alloys. In the present work, weexplored a new DTRIF system in Mg?Ag?Zn ternary alloys. The reversible phase transformationof Mg?Ag?Zn ternary alloys during de-/hydrogenation, and their hydrogen desorptionthermodynamic and kinetic properties have been studied.