TY - JOUR

T1 - High-Pressure Raman and Calorimetry Studies of Vanadium(III) Alkyl Hydrides for Kubas-Type Hydrogen Storage

AU - Morris, Leah

AU - Trudeau, Michel L.

AU - Reed, Daniel

AU - Brook, David

AU - Antonelli, David

PY - 2016/3/16

Y1 - 2016/3/16

N2 - 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.

AB - 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.

U2 - 10.1002/cphc.201501093

DO - 10.1002/cphc.201501093

M3 - Journal article

VL - 17

SP - 822

EP - 828

JO - ChemPhysChem

JF - ChemPhysChem

SN - 1439-4235

IS - 6

ER -