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Registration Number

0224U032727, (0123U103492) , R & D reports

Title

Metal hydrides based on modified magnesium alloys for modern high-capacity hydrogen storage systems

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Газове та електрохімічне гідрування сплавів. Встановлення складу та структури гідридів. Встановлення кінетичних та термодинамічних параметрів утворення гідридів. Рекомендації щодо практичного використання.

Head

Pavliuk Volodymyr V., д.х.н.

Registration Date

03-12-2024

Organization

Ivan Franko National University of Lviv

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The goal of the project is to create new high-tech materials for hydrogen generation, storage, and transformation systems based on the proposed concept of maximum disordering of high-entropy intermetallic phases and structural modification, which will ensure high sorption capacity of hydrogen storage systems and cyclic stability of electrodes of metal hydride batteries. The developed materials will be extremely useful in the post-war recovery of Ukraine, in particular in the energy sector.

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The object of research is magnesium-containing intermetallics for hydrogen sorption, storage and transportation systems, and electrodes of metal hydride chemical energy sources. The research subject is phase equilibrium in magnesium-containing systems, crystal structures of compounds formed in these systems, their hydrogen sorption and electrochemical properties. The work aims to create new high-tech materials for hydrogen generation, storage, and transportation systems based on the proposed concept of the maximum ordering of high-entropy intermetallic phases and structural modification, which will ensure the high sorption capacity of hydrogen storage systems and cyclic stability of electrodes of metal hydride batteries. For the first time, a systematic study of magnesium containing alloys was carried out to create hydrogen sorption materials for systems of accumulation, storage, and safe transportation of hydrogen, as well as the manufacture of electrodes for metal-hydride chemical sources of electrical energy. The hydrogen sorption capacity of the developed metal-hydrides with a room desorption temperature reaches 1.8 % by weight, which is 10-15 % higher than the capacity of analogs (LaNi5), and the cost is lower. Hydrogen sorption capacity developed complex hydrides reaches 9.6 wt. %, and the desorption temperature is 50-80 °C lower compared to magnesium (360 °C). The specific energy intensity of metal-hydride electrodes is in the range of 170- 180 Wh/kg. Implementation of the results of SRW. Materials have been developed for testing for possible practical implementation at the Institute of Physics and Mechanics of the National Academy of Sciences of Ukraine G.V. Karpenko. A textbook called "Chemical Sources of Electrical Energy" is planned to be developed within the research work framework. These improvements are intended for hydrogen storage and storage systems as an energy source and the manufacture of electrodes for metal hydride batteries.

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Verbovytskyi Yurii V
Dmytriv Hryhorii S.
Zaremba Oksana I.
Zelinska Oksana Ya.
Kordan Vasyl M.
Milashius Viktoriia E.
Nytka Vitalii V.
Pavliuk Nazar V.
Tarasiuk Ivan I.