High-Pressure Raman and Calorimetry Studies of Vanadium(III) Alkyl Hydrides for Kubas-Type Hydrogen Storage

作者：Morris Leah; Trudeau Michel L; Reed Daniel; Book David; Antonelli David M^*

来源：ChemPhysChem, 2016, 17(6): 822-828.

DOI：10.1002/cphc.201501093

• hydrides
• hydrogen storage
• materials science
• Raman spectroscopy
• transition metals

Reversible hydrogen storage under ambient conditions has been identified as a major bottleneck in enabling a future hydrogen economy. Herein, we report an amorphous vanadium(III) alkyl hydride gel that binds hydrogen through the Kubas interaction. The material possesses a gravimetric adsorption capacity of 5.42wt% H-2 at 120bar and 298K reversibly at saturation with no loss of capacity after ten cycles. This corresponds to a volumetric capacity of 75.4kgH(2)m(-3). Raman experiments at 100bar confirm that Kubas binding is involved in the adsorption mechanism. The material possesses an enthalpy of H-2 adsorption of +0.52kJmol(-1) H-2, as measured directly by calorimetry, and this is practical for use in a vehicles without a complex heat management system.

• 出版日期2016-3-16