Al and Zr addition to improve the hydrogen storage kinetics of Mg-based nanocomposites: Synergistic effects of multiphase nanocatalysts

Potential Applications of Metal‐Doped Nanomaterials for Enhancing Solid‐State Hydrogen Storage

“…The synergistic effects of multiphase materials offer a pathway toward developing efficient and practical hydrogen storage systems with improved performance characteristics]. Different multiphase materials such as Ti 31 V 26 Nb 26 Zr 12 M 5 , [147] CaÀ Ni, [148] and MgÀ Al and MgÀ AlÀ Zr [149] are widely reported. Here, a design of multiphase material and its significance in hydrogen storage was reported.…”

Hierarchical Structure Carbon-Coated CoNi Nanocatalysts Derived from Flower-Like Bimetal MOFs: Enhancing the Hydrogen Storage Performance of MgH2 under Mild Conditions

“…5−7 Among many solid-state hydrogen storage materials, magnesium hydride, which is low-cost and environmentally friendly and has abundant reserves, has attracted much attention from researchers. 8,9 MgH 2 is considered to be one of the most potential hydrogen storage materials due to its high theoretical hydrogen storage capacity (7.6 wt %) and excellent reversible properties. 10−12 However, due to its high thermodynamic stability and poor kinetic performance, its hydrogen absorption and desorption process requires a high working temperature (>573 K), which limits its practical application.…”

“…As an environmentally friendly and sustainable clean energy, hydrogen energy is considered an ideal substitute for traditional energy to solve the increasingly serious energy crisis and slow down climate deterioration. , For the hydrogen economy, hydrogen storage technology still restricts the development of hydrogen energy applications. Compared with gaseous hydrogen storage and liquid hydrogen storage, solid-state hydrogen storage materials have the advantages of high energy density and good safety, which effectively solve the storage problem in the application of hydrogen energy. , In addition, the renewability of solid hydrogen storage materials also effectively avoids environmental pollution. − Among many solid-state hydrogen storage materials, magnesium hydride, which is low-cost and environmentally friendly and has abundant reserves, has attracted much attention from researchers. , MgH 2 is considered to be one of the most potential hydrogen storage materials due to its high theoretical hydrogen storage capacity (7.6 wt %) and excellent reversible properties. − However, due to its high thermodynamic stability and poor kinetic performance, its hydrogen absorption and desorption process requires a high working temperature (>573 K), which limits its practical application. , …”

Synergistic Combination of Ni Nanoparticles and Ti3C2 MXene Nanosheets with MgH2 Particles for Hydrogen Storage

“…The reversible hydrogen capacity of 6.3 wt % did not decrease throughout 10 cycles, showing high cycling stability. Zhang et al noticed that the use of dual catalysts (Al and Zr) could further enhance the hydrogen uptake dynamics of Mg compared to using a single metal (Al). The hydrogen uptake activation energy of Mg 92.6 Al 5.1 Zr 2.3 was 69.8 kJ mol –1 , which was much lower than that of Mg 92.6 Al 7.4 (80.6 kJ mol –1 ).…”

“…These systems have shown synergistically catalytic effects, such as Y 2 O 3 and YH 2 added to a Mg 0.97 Zn 0.03 solid solution alloy 27 and TiS 2 and Ni added to Mg systems. 28 Tome et al 29 31 noticed that the use of dual catalysts (Al and Zr) could further enhance the hydrogen uptake dynamics of Mg compared to using a single metal (Al). The hydrogen uptake activation energy of Mg 92.6 Al 5.1 Zr 2.3 was 69.8 kJ mol −1 , which was much lower than that of Mg 92.6 Al 7.4 (80.6 kJ mol −1 ).…”