Potential possibilities of hydrogen accumulation in Nickel-based solid-state materials

Abstract

Abstract A variant of a hydrogen accumulator based on electrochemical systems has been investigated. Niwas used as the basis, as a material with a greater tendency to absorb hydrogen. Nix-By-H (D)z composites were synthesized by the electrochemical method. Adding B to the Nix-By composite increases the accumulation of hydrogen. In Ni-B composites, boron plays the role of a hydrogen atom catcher, since tensile stresses arise in the vicinity of the substitutional impurity of a small atomic radius - boron placed in the FCC nickel lattice, therefore, hydrogen, as compared to nickel, segregates with higher synergism near boron. The potential of interaction of a hydrogen atom with an impurity trap in the form of a boron atom is estimated at 42 eV. The thermal desorption spectra of deuterium were studied of Ni–B composites at T ~ 100 K, pre-implanted with deuterium (testing element). The ratio of Ni and deuterium Ni: D = 1:1, and for the composite Ni95B5 [Ni95: B5]: D = 1:1.25. Desorption peak - 325 K.