The applicability of the novel metal hydride flow-throw hydrogen separation method is proved. New compositions of low temperature AB 5 -type metal hydrides for biohydrogen purification are manufactured and tested. Thermal processes in the reactor during hydrogen separation from carbon dioxide are studied.

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The results of demonstration projects on development and testing of hydrogen fuel cell power units utilizing low-temperature metal hydrides of AB 5 type as hydrogen storage and purification tool are presented. In the effort to enable the technology for autonomous applications, the novel concept of using fuel cell exhaust air for hydrogen desorption process replacing an external heating agent was successfully proved. The technology of through-flow metal-hydride based hydrogen purification was also successfully utilized for biohydrogen. The results of two proofof-concept projects show a good perspective for autonomous applications and open the opportunity for further research in the field of power system control.

This paper presents the experimental results of the system integration of a fuel cell (FC), an electrolyzer and a metal hydride hydrogen storage and purification system. A pilot scale experimental power installation H2Smart with an electric power of 1 kW is developed, and the results of its operation in different regimes are presented. The problems of hydrogen desorption for the supply of FC and hydrogen sorption from the electrolyzer at the start are shown. Possible solutions of this problem are proposed.