Hydrogen generation kinetics via hydrolysis of Mg2Ni and Mg2NiH4 powders

Dipole Coupling Accelerated H2O Dissociation by Magnesium‐Based Intermetallic Catalysts

“…The Mg 2 Ni, which hosts negatively charged Ni, [12] is considered even less effective in this reaction. These expectations contradict the experimental data, in which Mg 2 Ni exhibits high catalytic activity towards hydrolysis corrosion [11] …”

“…The corrosion rates of Mg can be enhanced by introducing late transition metals, such as Ni [10] . The addition of Mg 2 Ni can further enhance the corrosion rates of Mg with reduced activation energies [11] . Meanwhile, according to the d ‐band center concept, both Ni and Mg 2 Ni are considered to exhibit poor catalytic activity toward the H 2 O adsorption and dissociation process because of their deep d ‐band center characteristics [6b] .…”

“…[10] The addition of Mg 2 Ni can further enhance the corrosion rates of Mg with reduced activation energies. [11] Meanwhile, according to the d-band center concept, both Ni and Mg 2 Ni are considered to exhibit poor catalytic activity toward the H 2 O adsorption and dissociation process because of their deep d-band center characteristics. [6b] Indeed, the H 2 O dissociation barrier on Ni was calculated to be 1.02 eV.…”

“…These expectations contradict the experimental data, in which Mg 2 Ni exhibits high catalytic activity towards hydrolysis corrosion. [11] How can we interpret the inconsistency? It was reported that Coulomb interaction between H 2 O and catalyst surface also can enhance the H 2 O adsorption energy.…”

A reusable dual functional Mo2C catalyst for rapid hydrogen evolution by Mg hydrolysis

“…The replacement of acid with chloride solutions (e.g., MgCl 2 , NiCl 2 , and NaCl) can prevent strong corrosion while slowing down the kinetic properties. 18,19 The use of additives can further improve the hydrolytic properties of Mg. This includes the introduction of metal additives by alloying (e.g., Mg-rare earth, Mg-Si, Mg-Ca, and Mg-Cu).…”