Thermochemical activation of hydrogen in the process of desorption from metal hydride

Andriy Rusanov, Viktor Solovey, Mykola Zipunnikov


The results of mass spectrometric studies of the energy state of hydrogen molecules with the usage of the electron impact ionization efficiency curves measurement method, both during desorption and in the mode of hydrogen flowing through the metal hydride layer, are presented. The dependences of the breakdown voltage on the pressure in the gas-discharge chamber for an electric discharge in activated hydrogen are obtained. Those dependencies indicate a significant decrease in the ionization potential of hydrogen under the electric current influence. Within the framework of the presented material, the results of hydrogen emission from hydride-forming materials based on LaNi5 are presented and an assessment of its thermodynamic state is given, which made it possible to study the energy-physical characteristics of gas-discharge processes. The possibility of practical use of metal hydride activation to increase the energy and operational efficiency of electric-discharge hydrogen systems is shown.


hydrogen, ionization, metal hydride activation, desorption.

Full Text:



Yartys V, Lototskyy M, Linkov V, Grant D, Stuart A, Eriksen J, Denys R, Bowman R. Metal hydride hydrogen compression: recent advances and future prospects. Applied Physics A 2016;122(4):415.

Nyamsi S, Lototskyy M, Tolj I. Selection of metal hydrides-based thermal energy storage: Energy storage efficiency and density targets. International Journal of Hydrogen Energy 2018;43(50):22568-22583.

Lototskyy M, Tolj I, Pickering L, Sita C, Barbir F, Yartys V. The use of metal hydrides in fuel cell applications. Progress in Natural Science: Materials International 2017;27(1):3-20.

Dantzer P. Metal-Hydride technology: A critical review. Topics in Applied Physics ;:279-340.

Lototskyy M, Davids M, Tolj I, Klochko Y, Sekhar B, Chidziva S, Smith F, Swanepoel D, Pollet B. Metal hydride systems for hydrogen storage and supply for stationary and automotive low temperature PEM fuel cell power modules. International Journal of Hydrogen Energy 2015;40(35):11491-11497.

Davids M, Lototskyy M, Malinowski M, van Schalkwyk D, Parsons A, Pasupathi S, Swanepoel D, van Niekerk T. Metal hydride hydrogen storage tank for light fuel cell vehicle. International Journal of Hydrogen Energy 2019;44(55):29263-29272.

Reiser A. The application of Mg-based metal-hydrides as heat energy storage systems. International Journal of Hydrogen Energy 2000;25(5):425-430.

Corgnale C, Hardy B, Motyka T, Zidan R, Teprovich J, Peters B. Screening analysis of metal hydride based thermal energy storage systems for concentrating solar power plants. Renewable and Sustainable Energy Reviews 2014;38:821-833.

Mellouli S, Abhilash E, Askri F, Ben Nasrallah S. Integration of thermal energy storage unit in a metal hydride hydrogen storage tank. Applied Thermal Engineering 2016;102:1185-1196.

Tong L, Xiao J, Bénard P, Chahine R. Thermal management of metal hydride hydrogen storage reservoir using phase change materials. International Journal of Hydrogen Energy 2019;44(38):21055-21066.

Miled A, Mellouli S, Ben Maad H, Askri F. Improvement of the performance of metal hydride pump by using phase change heat exchanger. International Journal of Hydrogen Energy 2017;42(42):26343-26361.

Ryzhkov V, Sulinov A. Propulsion systems and low-thrust rocket engines based on various physical principles for control systems of small and micro-spacecraft. VESTNIK of Samara University. Aerospace and Mechanical Engineering 2018;17(4):115.

Yershov S, Rusanov A, Gardzilewicz A, Lampart P. Calculations of 3D viscous compressible turbomachinery flows. Proc. 2nd Symp. on Comp. Technologies for Fluid/ Thermal/Chemical Systems with Industrial Applications, ASME PVP Division Conf., 1-5 August 1999, Boston, USA, PVP 1999. Vol. 397.2. P. 143-154.

Rusanov A, Rusanov R, Lampart P. Designing and updating the flow part of axial and radial-axial turbines through mathematical modeling. Open Engineering 2015;5(1):399-410.

Kolomenskiy AA, Lebedev AN. The theory of cyclic accelerators. M.: Fizmatgiz. 1962. p. 214. [Russian]

Solovey VV, Basteev AV, Prognimak AM, Popov VV. Interaction of hydrogen and deuterium with the surface of hydride-forming materials under barothermal and plasma treatment. Question atomic science and technology. Nuclear engineering and technology. 1991. Vol. 1. P. 28-34. [Russian]

Wadehra JM. Nonequilibrium Vibrational Kinetics. Topics in Current Physics 1986. 39, ed. Capitelli, M. (Berlin: Springer, 1986): P. 191.

Schermann C, Pichou F, Landau M, C̆adez̆ I, Hall R. Highly excited hydrogen molecules desorbed from a surface: Experimental results. The Journal of Chemical Physics 1994;101(9):8152-8158.

Shmalko YuF, Klochko EV, Lototskiy MV, Azarenkov NA, Borisko VN. On the mechanism of thermosorption activation of hydrogen isotopes by intermetallic hydrides. Materials Science. №9. 2002. P. 52-56. [Russian]

Galchanskaya SA, Dorohov VV, Lazarev NF, Lototskiy MV, Solovey VV, Shmalko YuF. Study of the process of hydrogen activation by metal hydrides. I. Mass spectrographic analysis of glow discharge plasma. Question atomic science and technology. Nuclear engineering and technology. 1989. Vol. 1. P. 55-58. [Russian]

Valuyskaya SB, Skripal LP, Solovey VV, Lototskiy MV, Shmalko YuF. Study of the process of hydrogen activation by metal hydrides. I. Mass spectrometric determination of the potential and cross section of hydrogen ionization. Question atomic science and technology. Nuclear engineering and technology. 1989. Vol. 1. P. 58-61. [Russian]

Shmal'ko Y. Mass spectrometry determination of vibrationally excited states of molecules of hydrogen desorbed from the surface of metal hydrides. International Journal of Hydrogen Energy 1995;20(5):357-360.

SHMALKO Y. Influence of isotopic effect on the shift of the ionization potentials of hydrogen desorbed from the metal hydride surface. International Journal of Hydrogen Energy 1996;21(11-12):1057-1059.

Borisko VN, Klochko EV, Lototskiy MV, Shmalko YuF. Technological plasma source of negative ions. Question atomic science and technology. Physics of radiation damage and radiation materials science. 1998. Vol. 3(69), 4(70). P. 179-182. [Russian]

Klochko Y, Lototsky M, Popov V, Shmal'ko Y, Borisko V. Sorption and electrotransfer characteristics of hydrogen-gettering material in contact with a hydrogen plasma. Journal of Alloys and Compounds 1997;261(1-2):259-262.