Superior hydrogen storage properties of Mg95Ni5 + 10 wt.% nanosized Zr0.7Ti0.3Mn2 + 3 wt.% MWCNT prepared by hydriding combustion synthesis followed by mechanical milling (HCS + MM)

Remarkable Synergistic Catalysis of Ni-Doped Ultrafine TiO2 on Hydrogen Sorption Kinetics of MgH2

“…Pronounced improvement on the sorption properties of MgH 2 has not only been witnessed by combining MgH 2 with other hydrides such as LiAlH 4 34 or Mg 2 NiH 4 25 but also occurs when introducing multi-catalytic phases, e.g., Ni + Pd, 35 MWCNTs + TiO 2 , 36 and MWCNT + Zr 0.7 Ti 0.3 Mn 2 . 37 Although some promising results have been achieved, that is, the collaborative enhancement of both the accelerating kinetics and the lower onset temperature of MgH 2 desorption, there still exist some limitations in terms of the nanostructuring design, selection of the catalytic species, as well as in-depth understanding of the synergetic effect between phases. We attempt to verify herein whether the metal−metal oxide nanocomposite has such a collaborative improvement on Mg/ MgH 2 by strict contrast experiments.…”

A catalytic mechanism investigation of TiF3 on hydriding/dehydriding properties of Mg85Cu5Ni10 alloy

“…In general, the kinetic curve of dehydrogenation is tted by JMA model, and the dehydrogenation activation energy E a (de) can be calculated by Arrhenius method. Johnson-Mehl-Avrami (JMA) model is expressed by following equation: [33][34][35] ln[Àln(1 À a)] ¼ h ln k + h ln t (1) in this equation, a means the reaction fraction at time t, h represents the Avrami exponent reaction order and k indicates an effective kinetic parameter. Fig.…”