ENVIRONMENTAL REACTIVITY OF SOLID STATE HYDRIDE MATERIALS: MODELING AND TESTING FOR AIR AND WATER EXPOSURE

Conference · Tue May 18 04:00:00 EDT 2010

OSTI ID:980766

Anton, D; James, C; Cortes-Concepcion, J; Tamburello, D; Brinkman, K; Gray, J

To make commercially acceptable condensed phase hydrogen storage systems, it is important to understand quantitatively the risks involved in using these materials. A rigorous set of environmental reactivity tests have been developed based on modified testing procedures codified by the United Nations for the transportation of dangerous goods. Potential hydrogen storage material, 2LiBH4{center_dot}MgH2 and NH3BH3, have been tested using these modified procedures to evaluate the relative risks of these materials coming in contact with the environment in hypothetical accident scenarios. It is apparent that an ignition event will only occur if both a flammable concentration of hydrogen and sufficient thermal energy were available to ignite the hydrogen gas mixture. In order to predict hydride behavior for hypothesized accident scenarios, an idealized finite element model was developed for dispersed hydride from a breached system. Empirical thermodynamic calculations based on precise calorimetric experiments were performed in order to quantify the energy and hydrogen release rates and to quantify the reaction products resulting from water and air exposure. Both thermal and compositional predictions were made with identification of potential ignition event scenarios.

• Research Organization: SRS
• Sponsoring Organization: DOE
• DOE Contract Number: AC09-08SR22470
• OSTI ID: 980766
• Report Number(s): SRNL-STI-2010-00303
• Country of Publication: United States
• Language: English

Related Subjects

08 HYDROGEN
ACCIDENTS
AIR
HYDRIDES
HYDROGEN
HYDROGEN STORAGE
HYPOTHETICAL ACCIDENTS
IGNITION
SIMULATION
TESTING
THERMODYNAMICS
UNITED NATIONS
WATER