Feasibility and performance of the mixture of MgH2 and LiNH2 (1:1) as a hydrogen-storage material

Recent advances on the thermal destabilization of Mg-based hydrogen storage materials

“…Based on this, substantial work has been done to demonstrate the feasibility of reaction (11) experimentally. [107][108][109] The total weight loss was 8.1 wt% of the initial weight aer the sample was held at 493 K for 20 min, with a DH of 33.5 kJ mol À1 H 2 , which is very close to the theoretically predicted reaction enthalpy. 110 However, its application has been greatly hindered by its rather high activation energy barriers.…”

Insights into the dehydrogenation reaction process of a K-containing Mg(NH2)2–2LiH system

“…10 Following this work, a variety of metal amide/hydride combinations have been explored and studied for their hydrogen storage properties. [11][12][13][14][15][16][17][18][19] In particular, the Mg(NH 2 ) 2 -2LiH system exhibits moderate operating temperatures, appropriate thermodynamics, good reversibility, and a relatively high hydrogen capacity of 5.6 wt% and has therefore attracted considerable attention. 11,12 More importantly, the thermodynamically predicted operating temperature is approximately 90 °C at 1 bar, which are close to the practical conditions for proton exchange membrane fuel cells (PEMFCs) that have been proposed by US Department of Energy (DOE).…”

Tailoring Thermodynamics and Kinetics for Hydrogen Storage in Complex Hydrides towards Applications

“…This phenomenon implies that the hydrogen desorption from the LiNH 2 ‐MgH 2 system should be of a solid‐solid reaction nature. A recent report by Hu et al …”

“…a confirmed our findings, reasonably interpreting the discrepancy between experimental results and theoretical calculations as reported previously by Alapati et al . and Akbarzadeh et al [19b,19c]. Unfortunately, less than 3 wt% hydrogen was recharged into the dehydrogenated LiNH 2 ‐MgH 2 system at 210 °C, with an initial hydrogen pressure of 105 atm [18b]…”