Advanced Fundamental Research on Hydrogen Storage Materials

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Hydrides with Light Elements

"Basic Research of Metal hydrides with Light Elements"

Scope

Metal hydrides with light elements (chemical hydride: binary hydrides and complex hydrides) have large gravimetric H2 densities. However, the high work temperature (thermodynamic stability) and the slow reaction rate (high activation energy) limit the practical application of the chemical hydride systems.Those properties can be improved by the nano-composite materials.

Fig.1.Design concept of the nano-composite materials for hydrogen storage.

The nano-composite materials for hydrogen storage encompass a catalyst and composite chemical hydrides at the nanometer scale. The catalyst increases reaction rate. The thermodynamic stability of the nano-composite materials can be controlled by the composite chemical hydrides having protide (hydride) (Hδ-) and proton (Hδ+). In addition, the hydrogen absorption kinetics is accelerated by the nano-size materials and they may change the thermodynamic stability of the materials. The goal of this research is to establish the principle of the basic technology in order to control the kinetics and thermodynamics of the nano-composite materials having high H2 capacity.

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Members

Our group is with over 15 staff members and they are belong to Institute of Advanced Materials Research.

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