Ternary borides and borohydrides for hydrogen storage and method of synthesis
AssigneeNational Technology & Engineering Solutions of Sandia, LLC
InventorsVitalie Stavila, Leonard E. Klebanoff
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Abstract
A method and a system is provided for obtaining solid-state hydrogen storage and release in materials with at least theoretical loaded hydrogen densities of 11 wt % or greater that can deliver hydrogen and be recharged at moderate temperatures enabling incorporation into hydrogen storage systems suitable for transportation applications. These materials comprise ternary boride materials comprising certain light transition metals and alkaline or alkaline earth metals, and ideally have no or very little phase separation. A process of making these materials is also provided.
Claims10
A process for making a mixed-metal ternary boride/borohydride hydrogen storage material, comprising the steps of:
- mixing an Ma metal source, an Mb metal source, and a borane adduct in hydrocarbon solvent;
- wherein Ma is one or more metals selected from the group consisting of Li, Na, K, Mg, and Ca, and Mb is one or more metals selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn;
- removing excess solvent and liquid by-products by drying and applying a vacuum.
A process for making a mixed-metal ternary boride/borohydride hydrogen storage material, comprising the steps of:
- reacting an Ma metal source, an Mb metal source, and a borane adduct, forming a mixed-metal borohydride;
- wherein Ma is one or more metals selected from the group consisting of Li, Na, K, Mg, and Ca, and Mb is one or more metals selected from Ti, V, Cr, Mn, Fe, Co, Ni, Cu and Zn;
- dehydrogenating the mixed metal borohydride into a ternary boride phase.
Dependencies are inferred from the claim text.