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

Morris, Leah and Trudeau, Michel L. and Reed, Daniel and Brook, David and Antonelli, David (2016) High-Pressure Raman and Calorimetry Studies of Vanadium(III) Alkyl Hydrides for Kubas-Type Hydrogen Storage. ChemPhysChem, 17 (6). pp. 822-828. ISSN 1439-4235

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Abstract

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 5.42 wt % H2 at 120 bar and 298 K reversibly at saturation with no loss of capacity after ten cycles. This corresponds to a volumetric capacity of 75.4 kgH2 m−3. Raman experiments at 100 bar confirm that Kubas binding is involved in the adsorption mechanism. The material possesses an enthalpy of H2 adsorption of +0.52 kJ mol−1 H2, as measured directly by calorimetry, and this is practical for use in a vehicles without a complex heat management system.

Item Type:
Journal Article
Journal or Publication Title:
ChemPhysChem
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1600/1606
Subjects:
ID Code:
126647
Deposited By:
Deposited On:
31 Jul 2018 12:40
Refereed?:
Yes
Published?:
Published
Last Modified:
01 Jan 2020 11:27