Effects of Ti on the cycle life of amorphous MgNi-based alloy prepared by ball milling

A study on the electrochemical properties of an Mg−Ni based thin film electrode for a microbattery

“…The bulk electrode had a one-plateau potential (-0.8 V) and lost 80% of its maximum capacity within 10 cycles [20][21][22]. And also, it has been reported that the degradation mechanism is related with the oxidation of magnesium [15,22]. The magnesium oxide layer did not cause a significant loss of hydrogen storage capacity, but prevented the hydrogen transfer at the surface and hydrogen diffusion through the surface [15].…”

“…In addition, the crystalline Mg 2 Ni based electrode showed a very low discharge capacity [14]. Most of the researchers made an amorphous Mg 2 Ni type alloy by high-energy ball milling [15][16][17]. The melt-spin technique was also used [18].…”

Morphologic, Structural, Steric, Energetic and Thermodynamic Studies of the Mechanical Alloy Mg50Ni45Ti5 for Hydrogen Storage

“…Since it contains Ni, which is considered as a good agent [19,21] facilities the dissociation of the dihydrogen. Else the presence of the Ti which prevents the alloy corrosion and pulverization [22] is viewed as a good factor for the alloy cycle life during hydrogenation [23][24][25][26][27][28]. Moreover, the disorder of the structure, as a result of the mechanical milling, is also an agent for the effectiveness of hydriding as it absorbs great amounts of hydrogen at room temperature than its polycrystalline analog does.…”

Advanced study of hydrogen storage by substitutional doping of Mn and Ti in Mg2Ni phase

“…However, the poor hydriding/dehydriding kinetics and high thermodynamical stability of Mg 2 NiH 4 (requiring 280°C for 1 bar hydrogen [1]) become the obstacle for the practical use for hydrogen storage. Mn [2,3] and Ti [4] have been experimentally added into Mg 2 Ni for improving its hydrogen storage properties.…”