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Electrocatalysis and Electrocrystallization

phone: (+359 2) 979 2746, e-mail:

Research area

Research in the Department of Electrocatalysis and Electrocrystallizaton is focused on studying the influence of electrode surface structure on the formation of the electric double layer and on the processes of adsorption and electrocatalysis. The processes and mechanisms of electrocrystallization and electrodeposition of metals are also investigated. The Department’s activities include also development of electrodes for storage of hydrogen in metal hydrides, for Zinc-air batteries, for high temperature electrolysis, as well as electrodes and electrode materials for fuel cells (e.g. H2S/O2, bio-fuel cells, etc.).


  • Konstantin Petrov, Professor, PhD (head)
  • Yolina Hubenova, Assoc. Prof., DSc
  • Borislav Abrashev, Res. Assoc., PhD
  • Dzhamal Uzun, Res. Assoc., PhD
  • Res. Assist. Valentin Terziev,
  • Bistra Nikolova, Technologist

Projects (2011 - 2021)

  • "Biocatalyzed Electrolysis for Hydrogen Production", NSF, KP-06-H29/8, (2018-2021)
  • "Secondary metal-air cell", BAS (2014-2018)
  • ''Zinc Air secondary innovative nanotech based batteries for efficient energy storage", /ZAS/646186-2/, FP8-Horizon 2020-EU (2015-2018)
  • "New fuel cells based on chemical and microbial processes", BAS (2015-2018) 
  • "New fuel cells based on chemical and microbial processes", MES/NSF DFNI 02/15 (2014-2017)
  • "Sustainable hydrogen generation", /SUSHGEN/, FP7-PEOPLE-ITN-EU (2010 - 2014)

Publications (2011 - 2019)

  1. K. M. Petrov and D. R. Uzun, Advances in Chemistry Research, volume 49, Chapter 2. Simultaneous Electrocatalytic Reactions of Sulphur Compounds, James C. Taylor (Editor), Series: Advances in Chemistry Research, published by: Nova Science Publishers, Inc., New York, 2019, ISBN: 978-1-53614-759-9.
  2. Hubenova Y., Bakalska R., Mitov M.. Electrodeposited styrylquinolinium dye as molecular electrocatalyst for coupled redox reactions. Bioelectrochemistry, 123, Elsevier B.V., 2018, ISSN:1567-5394, DOI:, 173-181.
  3. Hubenova Y., Hubenova E., Bakalska R., Мitov M.. Electrochemical redox activity of styrylquinolinium dye in solution, Bulgarian Chemical Communications, 50 Special Issue D, Bulgarian Academy of sciences, 2018, 62-67.
  4. Hubenova, Y., Ivanov, G., Hubenova, E., Mitov, M.. Photo-induced charge transfer between duckweed and anode in photosynthesizing plant fuel cell. Bulgarian Chemical Communications, 50, 2018, ISSN:0324-1130, 141-146.
  5. Petrov K., Dimitrov D., Uzun D.. The Black Sea problem – possible solutions. LAP LAMBERT Academic Publishing, 2018, ISBN:978-613-9-81805-1. 
  6. Stoynov, Z., Vladikova, D., Abrashev, B., Slavova, M., Burdin, B., Mihaylova-Dimitrova, E., Colmenares, L., Mainar, A., Blazquez, J.. Screening impedance analysis of Zn-air cells. Bulgarian Chemical Communication, 50, Special Issue A, 2018, ISSN:0324-1130, 189-194.
  7. Uzun D., Pchelarov G., Dimitrov O., Vassilev S., Obretenov W., Petrov K.. Electrochemical oxidation of sulphites by DWCNTs, MWCNTs, higher fullerenes and manganese. Journal of Physics: Conference Series, 992 (2018) 012028, Institute of Physics, 2018, ISSN:17426596, DOI:
  8. Yolina Hubenova, Eleonora Hubenova, Mario Mitov. Chronoamperometrically poised electrodes mimic the performance of yeast-based bioanode.. Bulgarian Chemical Communications, 50, Special Issue D, BAN, 2018.
  9. Bardarov I., Mitov M., Ivanova D., Hubenova Y. Light-dependent processes on the cathode enhance the electrical outputs of sediment microbial fuel cells. Bioelectrochemistry, 122(1–10), Elsevier B.V., 2018, ISSN:1567-5394, DOI:, 1-10.
  10. Ebrasu, D., Zaulet, A., Enache, S., Dragan, M., Schitea, D., Carcadea, E., Varlam, M., Petrov, K.. Electrochemical Characterization of Metal Oxides as Catalysts for Oxygen Evolution in Alkaline Media. Bulgarian Chemical Communications, 50 Special Issue A, Bulgarian Academy of sciences, 2018, p. 133-138.
  11. Enache, S., Dragan, M., Soare, A., Ebrasu, D., Zaulet, A., Varlam, M., Petrov, K.. One step solid-state synthesis of lanthanum cobalt oxide perovskites as catalysts for oxygen evolution in alkaline media. Bulgarian Chemical Communications, 50 Special Issue A, Bulgarian Academy of sciences, 2018, p. 127-p. 132.
  12. Mitov, M.Y., Bardarov, I.O., Chorbadzhiyska, E. Y., Hubenova, Y.. Copper Recovery Combined with Wastewater Treatment in a Microbial Fuel Cell. Bulgarian Chemical Communications, 50, Bulgarian Academy of Schiences, 2018, ISSN:0324-1130, 136-140.
  13. S. Hristoskova,, I. Bardarov, D. Yankov,, S. Danova,, Y. Hubenova, M. Mitov. Identification of bacterial community in a Sediment Microbial Fuel Cell,. Bulgarian Chemical Communications, 50, Special Issue B, BAN, 2018, 171-176.
  14. Y. Hubenova, Yeast-based biofuel cells. A chapter in: Encyclopedia of Interfacial Chemistry - Surface Science and Electrochemistry - an  integral component of Elsevier's Reference Module in Chemistry, Molecular Sciences and Chemical Engineering, ELSEVIER INC (2017).
  15. M. Mitov, E. Chorbadzhiyska, L. Nalbandian, Y. Hubenova, Nickel-based electrodeposits as potential cathode catalysts for hydrogen production by microbial electrolysis, Journal of Power Sources 356 (2017) 467,
  16. Yolina Hubenova, Eleonora Hubenova, Evelina Slavcheva, Mario Mitov, The glyoxylate pathway contributes to enhanced extracellular electron transfer in yeast-based biofuel cell, Bioelectrochemistry 116 (2017) 10–16.
  17. Pchelarov, G., Uzun, D., Razkazova-Velkova E. , Dimitrov, O., Vassilev, S., Petrov, K. Electrocatalysts for sulphur ions  oxidation based on DWCNTs, higher fullerenes and manganese, Bulgarian Chemical Communications, Volume 49,  Special Issue C , (pp. 218– 226),  2017.
  18. Pandev, M., Lucchese, P, Mansilla, C., Le Duigou, A., Abrashev. B., Vladikova, D., HYDROGEN ECONOMY: THE FUTURE FOR A SUSTAINABLE AND GREEN SOCIETY. Bulgarian Chemical Communications 49, C, 2017, 84-92.
  19. Abrashev, B., Spassov, T., Pandev, M., Vassilev, S., Popov, A., Hydrogen sorption and electrochemical properties of Ti-Fe based alloys synthesized by mechanical alloying. Bulgarian Chemical Communications 49, C, 2017, 247-253.
  20. G. Pchelarov, D. Uzun, E. Rzkazova-Velkova, O. Dimitrov, S. Vassilev, W. Obretenov, N. Dermendzhieva, K. Petrov, Oxidation of sulphites on a catalyst comprised of manganese, DWCNTs, MWCNTs and higher fullerenes by an electrochemical technique, Proceedings of the Seventh International Conference “Modern Trends in Science” (FMNS-2017), held 14-18.06.2017, Blagoevgrad, Bulgaria, p.196.
  21. Pchelarov, G., Uzun, D., Abrashev, B., The fuel cell, past and present, Scientific Report (ISSN 1313-4264) presented at the 11th International Conference on Advanced Materials and Operations, 26 – 29 June 2016, Sozopol, Bulgaria, pp. 77 – 83, 2016.
  22. Uzun, D., Razkazova-Velkova, E., Petrov, K., Beschkov, V., H2S/O2 fuel cells using hydrogen sulfide from Black Sea waters. Journal of Applied Electrochemistry, 46, 9, Springer, 2016, 943-949.
  23. Voskanyan S., Tzanev A., Shroti N., Pchelarov, G., Petrov K., Zirconium, Cerium and Yttrium on Ti cathodes for evolution of H2 in an Acid electrolyte. Bulgarian Chemical Communications, Vol. 48, No. 1, p. 84–91, 2016.
  24. Uzun D., Razkazova-Velkova E., Petrov K., Beschkov V., Electrochemical method for energy production from hydrogen sulfide in the Black sea waters in sulfide-driven fuel cell, Bulgarian Chemical Communications, 47 (3) (2015) pp. 859-866.
  25. Uzun D., Razkazova-Velkova E., Beschkov V., Pchelarov G., Petrov K., Electrochemical reduction of sulfur dioxide by oxidation of hydrogen sulfide in aqueous media, Bulgarian Chemical Communications, 47 (3) (2015) pp. 867-871.
  26. Abrashev B., Uzun D., Hristov H., Nicheva D., Petrov K., Design of an electrochemical cell for Bi-functional Oxygen Electrode (BOE) studies, Advances in Natural Science: Theory & Applications, Volume 4 No.2 (2015) 65-68
  27. Tsanev A., Iliev P., Petrov K., Stefanov P., Stoychev D., Characterization of electrochemically deposited Ce1-xZrxO2layers modified with cobalt oxide for electrocatalytic conversion of NOx and CO, Chemical and Biochemical Engineering Quarterly, 28 (3) (2014) pp. 337-347.
  28. Ali, M., Kirova, D., Petrov, K., A preliminary analysis of wind-hydrogen system in Bulgaria, NATO Science for Peace and Security Series B: Physics and Biophysics (2013) pp. 359-366.
  29. Petrov K., Electrochemical methods for cleansing of H2S and SO2 in industrial and natural contaminated waters: Elcox method, NATO Science for Peace and Security Series A: Chemistry and Biology (2012) pp. 287-299.
  30. Petrov K., Baykara S.Z., Ebrasu D., Gulin M., Veziroglu A., An assessment of electrolytic hydrogen production from H2S in Black Sea waters International Journal of Hydrogen Energy, 36 (15) (2011) pp. 8936-8942.
  31. Petrov K., Nikolov I., Nikolova V., Iliev P., Uzun D., Vitanov T., Electrolytic cell for hydrogen and sulfuric acid production, Bulgarian Chemical Communications, 43 (1) (2011) pp. 105-110.