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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Composites for Energy Applications: Materials for Renewable Energy Applications 2022
Presentation Title Energetics of the Reversible Dehydrogenation of Magnesium Borohydride and Mg(BH4)2-THF Composite to Magnesium Boranes
Author(s) CRAIG JENSEN, Sunil Shrestha, Kazuumi Fujioka, Rui Sun, Phuong Nguyen, Tom Autrey
On-Site Speaker (Planned) CRAIG JENSEN
Abstract Scope Magnesium borohydride has been extensively studied as a potentially viable, practical hydrogen storage material. The dehydrogenation of the composite material resulting from the addition of sub-stoichiometric amounts tetrahydrofuran exhibits much more rapid kinetics than those of pure Mg(BH4)2 and results in selective formation Mg(B10H10) rather than Mg(B3H8)2 (hydrogen cycling capacity 2.7 vs 8.1 wt %). In order to better understand the energetic parameters associated responsible for the divergent reactivities of pure and Mg(BH4)2(THF)0.25, we have obtained isothermal kinetic data for the reversible dehydrogenation of these materials in the 180-240 ˚C range and conducted kinetic modeling studies. Excellent fits with the experimental data have been obtained employing models that assume the dehydrogenation reaction is readily reversible. This talk will present the activation energies for the dehydrogenation and hydrogenation reactions that have been deduced from these studies as well as the enthalpies of dehydrogenation that are indicated by these results.
Proceedings Inclusion? Planned:
Keywords Energy Conversion and Storage, Computational Materials Science & Engineering, Composites

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Densification and Microstructure Features of Lithium Hydride Fabrication
Design of Novel Composites by Using Bioplastics and Biomass
Development and Characterization of High Capacity Hydrogen Energy Storage Materials
Development of Hydrogen Storage and Gas Purification Materials for Renewable Energy Applications
Dye-Sensitized Solar Cell charged Redox Flow Battery for Efficient Solar Conversion
Energetics of the Reversible Dehydrogenation of Magnesium Borohydride and Mg(BH4)2-THF Composite to Magnesium Boranes
Eutectic Electrolytes for Lithium Ion Batteries
Fabrication of novel LiCrTiO4-MWCNTs based composite electrodes for flexible Li ion batteries
Genetic Manipulation of M13 Bacteriophage for Enhancing the Efficiency of Virus-inoculated Perovskite Solar Cells with a Certified Efficiency of 22.3%
Nanocomposites for gel and solid polymer electrolytes in Lithium Batteries
Nanoconfined Metal Hydrides as Solid-State Electrolytes and as Reversible Hydrogen Storage Materials
Non-destructive evaluation of defects in composite pressure vessels for hydrogen storage
Plasmon-initiated Hydrogen Desorption
Polymer Templating Method for the Formation of Hierarchically Porous Nitrogen-Rich Tin-Carbon Composite Anodes
Preparation and Characterization of Pure and Decorated Metal Oxide Materials for Energy Applications
Preparation of coal liquefaction residue/PAN composite carbon nanofibers by electrostatic spinning
Processing and energy recovery of corncob from Colombia
Seebeck Analysis of ALD Synthesized Thermoelectric thin Films
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System Modeling of Metal Hydrides for Fuel Cell Vehicles

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