Effect of boron additive on the cycle life of low-Co AB5-type electrode consisting of alloy prepared by cast and rapid quenching

Influences of melt spinning on electrochemical hydrogen storage performance of nanocrystalline and amorphous Mg2Ni-type alloys

“…The S 20 value of the as-spun (30 m/s) alloy is enhanced from 27.06% to 78.33% by increasing the amount of La substitution from 0 to 2. The positive impact of such substitution on the cycle stability of the alloy is ascribed to the glass formation facilitated by La substitution because an amorphous phase improves not only the anti-pulverization ability but also the anticorrosion and anti-oxidation abilities of the alloy electrode in a corrosive electrolyte [28]. Based on the above-mentioned results, it can be presumed that an impactful approach for improving the cycle stability of the Mg-based alloy electrodes is to intensify its anti-corrosion and anti-oxidation capabilities.…”

Electrochemical performances of a Co-free La(NiMnAlFe)5 hydrogen storage alloy modified by surface coating with Cu

“…Wei et al [8,9] found that through the addition of trace of Ca and Li elements, the cycle life of the low-cobalt alloys can be improved. Zhang et al [10] found that a trace addition of B to the low-Co AB 5 owing to the difficulty in the addition of active elements in industry production, so the single or united addition of Si, Fe, Cu, Cr, etc. elements is still principal.…”

Microstructures and electrochemical properties of Co-free AB5-type hydrogen storage alloys through substitution of Ni by Fe

“…Wei et al [11] found that through the addition of trace of Ca element, the cycle life of the low-cobalt alloys can be improved. Zhang et al [12] found that a trace of B element was added in the low-Co AB 5 -type alloy, the cycle life of the as-cast and quenched alloys could be enhanced dramatically. But owing to the addition of active elements difficultly in the industry smelting, so the substitution by some transit metal elements is still principal.…”