Tezislər / Theses

Figure 19.
Schematic representation 
of water electrolysis process

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THE 3
rd
 INTERNATIONAL SCIENTIFIC CONFERENCES OF STUDENTS AND YOUNG RESEARCHERS 
dedicated to the 99
th
anniversary of the National Leader of Azerbaijan Heydar Aliyev
460
and capital costs and lower efficiency compared to gas compression (7). The 
existing storage problem for hydrogen especially limits its application in fuel 
cells technologies which can potentially decrease greenhouse emissions by 
reducing energy consumption simultaneously. The main challenge here is 
the low density of the hydrogen gas and hence the limited ability of hydrogen 
for being stored onboard. To overcome this issue, high-pressure and liquid 
hydrogen vessels are applied in the road testing while not meeting all 
demands for the fuel cell vehicle technologies. The most promising way of 
hydrogen storage in the future hydrogen industry is considered its storage in 
metal hydrides or its absorption to the carbon nanotubes because of their 
high volumetric efficiency (3).
References
 
1. Dincer I. Environmental and sustainability aspects of hydrogen and fuel cell systems. 
International Journal of Energy Research 2007;31(1):29-55. 
2. Dincer I. Green methods for hydrogen production, Faculty of Engineering and Applied 
Science, University of Ontario Institute of Technology, 2000 Simcoe Street North, Oshawa, 
ON L1H 7K4, Canada 
3. D.Mori & K.Hirose:, 2009. Recent challenges of hydrogen storage technologies for fuel 
cell vehicles. International Journal of Hydrogen Energy, 34(10), pp. 4569-4574. 
4. https://www.energy.gov/eere/fuelcells/hydrogen-production-processes
5. https://www.engie.com/en/renewables/hydrogen/green-hydrogen-production
6. Green hydrogen production methods. A review of solar-driven water splitting techniques, 
Conference: European Hydrogen Energy Conference 2018, Málaga (Spain)
7. Ni, M., 2006. “An Overview of Hydrogen Storage Technologies.”. Energy Exploration & 
Exploitation, 24(3), p. 197–209.