VI.A.2 High Density Hydrogen Storage System Demonstration Using NaAlH4 Based Complex Compound Hydrides
نویسندگان
چکیده
Technical Barriers This project addresses the following technical barriers from the Hydrogen Storage section of the Hydrogen, Fuel Cells and Infrastructure Technologies Program Multi-Year Research, Development and Demonstration Plan: • A. Cost • B. Weight and Volume • D. Durability • E. Refueling Time • M. Hydrogen Capacity and Reversibility • O. Test Protocols and Evaluation Facilities • Q. Thermal Management
منابع مشابه
Hydrogen storage in complex metal hydrides
Complex metal hydrides such as sodium aluminohydride (NaAlH4) and sodium borohydride (NaBH4) are solid-state hydrogen-storage materials with high hydrogen capacities. They can be used in combination with fuel cells as a hydrogen source thus enabling longer operation times compared with classical metal hydrides. The most important point for a wide application of these materials is the reversibil...
متن کاملFirst Principles Based Simulation of Hydrogen Interactions in Complex Hydrides, excerpt from DOE Hydrogen Program 2006 Progress Report
Project Scope Our goal is to develop a multiscale approach to model desorption and adsorption of hydrogen in complex metal hydrides. In this initial stage of the project, we started by using density-functional-theory quantum chemical calculations to study the structure of complex metal hydrides and the interactions of hydrogen with the metal atoms in these hydrides. We analyzed the crystal stru...
متن کاملHydrogen Storage in light complex Hydrides – structural studies
The most important unsolved problem for the introduction of the Hydrogen Economy is efficient and safe storage of hydrogen. Alanates, compounds based on the AlH4 unit, are among the most promising metal hydrides for reversible hydrogen storage. The storage capacity is large, e.g. NaAlH4 can release 5.6 wt% hydrogen below 200 C. Work during the last years has revealed that Ti additives improve t...
متن کاملA self-catalyzing hydrogen-storage material.
Conventional (e.g. MgH2) and complex hydrides (e.g. alanates, borohydrides, and amides) are the two primary classes of solid-state hydrogen-storage materials. Many of these “high-density” hydrides have the potential to store large amounts of hydrogen by weight (up to 18.5 wt% for LiBH4) and/or volume (up to 112 gL!1 for MgH2), values that are comparable to the hydrogen content of gasoline (15.8...
متن کاملNew High-pressure Phases of Lithium and Sodium Aluminum Tetrahydrides and their Implications to Hydrogen Storage
A systematic high-pressure study on LiAlH4 and NaAlH4 has been carried out using density-functional total-energy calculations. From the theoretical simulations, it is found that both LiAlH4 and NaAlH4 are subject to structural phase transitions at high pressure. α-LiAlH4 transforms to β-LiAlH4 (α-NaAlH4–type structure) at 2.6 GPa with a huge volume collapse of ca. 22 % (according to equilibrium...
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