Hydrogen storage properties of Pd-Ni alloy nanoparticles supported multiwalled carbon nanotubes

A type of novel material with high hydrogen storage capacity was prepared by supporting PdNi₁₈ alloy nanoparticles, which was synthesized by using a new colloid method, on the pretreated multiwalled carbon nanotubes (MWCNTs). The average PdNi₁₈ alloy particles sizes calculated from XRD patterns was ca 3 nm, and the high dispersion of these particles on MWCNTs was confirmed by the HRTEM images. Hydrogen adsorption performance of this composition was investigated under moderate pressure (0.1-1.5 MPa) at room temperature, and a maximum adsorption of ca 2.38% was achieved with this material under 1.5 MPa at room temperature, which was much higher than that reported previously at the same conditions.