Effect of Sm on the cyclic stability of La–Y–Ni-based alloys and their comparison with RE–Mg–Ni-based hydrogen storage alloy

Phase Transformation and Electrochemical Feature of an AB4-Type La0.60Sm0.20Mg0.20Ni3.50Al0.20 Hydrogen Storage Alloy for Ni/MH Batteries

“…Sm has been included based on the ternary La-Mg-Ni alloy in terms of the positive effect on the z E-mail: reozhuxm@163.com; zhanglu@ysu.edu.cn cycling stability due to the enhanced anti-pulverization/amorphization ability, and anti-oxidation degree of the alloy, as well as the lower cost in contrast to commonly used Nd or Pr element. 29,30 Al element also has been considered to replace Ni due to the strong anti-oxidation ability thanks to the Al 2 O 3 film on the alloy surface. 31 The AB 4 -type La 0.60 Sm 0.20 Mg 0.20 Ni 3.50 Al 0.20 hydrogen storage alloy was obtained with induction melting method, and the as-cast alloy was annealed in the temperature range of 930 °C-1000 °C to understand the phase transformation of the AB 4 -type structure and clarify its formation mechanism.…”

Electrochemical Charge and Discharge Performance of Perovskite-Type Oxide La1−x Na x FeO3 (x = 0–0.8) in Alkaline Solution

“…In the quest to improve energy efficiency, Nickel/metal-hydride (Ni-MH) batteries have received considerable attention as energy storage devices owing to their advantages of high energy density, easy accessibility of hydrogen sources, high tolerance for overcharge and over-discharge, and cost effectiveness. Different materials, such as mischmetal-based AB 5 -type alloys, 1,2 Zr-based laves phase alloys, 3,4 and RE-Mg-Ni-based alloys, 5,6 have been found to be able to store hydrogen and have been employed as the negative electrode of Ni-MH batteries. [7][8][9][10] To get higher reversible capacity and longer life cycle for portable applications, tremendous efforts are being made to develop novel negative materials.…”