ChemInform Abstract: Influence of Various Additives in Vanadium-Based Alloys V3TiNi0.56 on Secondary Phase Formation, Hydrogen Storage Properties, and Electrode Properties.
Abstract
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ChemInform Abstract
Title studies on V3TiNi0.56Mx alloys (M: Al, Si, Mn, Fe, Co, Cu, Ge, Zr, Nb, Mo, Pd, Hf, Ta; x = 0.046 and 0.24) show that all additives with the exception of Zr and Hf do not change the phase structure consisting of a V-based solid solution main phase and a TiNi-based secondary phase. For Zr and Hf the latter changes into the Laves-type phase. The high discharge capacities of > 290 A h kg-1 are retained for x = 0.046. For x = 0.24 and M: Zr, Hf, Nb, Ta, Mo, Mn the hydrogen storage properties are not significantly changed while addition of Fe, Co, Cu, Al, Ge and Si metals cause a decrease of the hydrogen storage capacity. The alloys with M: Hf, Nb, Ta, and Pd and x = 0.24 exhibit a discharge capacity of > 330 A h kg-1.
