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Nanoscaled Materials

phone: (+359 2) 979 2783, e-mail: antonia.stoyanova@iees.bas.bg

Research area

The research activity of the Nanoscaled Materials Department is focused on the development of new nanoscaled electrode materials with tailored properties for hybrid supercapacitor systems. The obtained materials are characterized by various modern physical and chemical analytical methods. Composite electrodes with optimized design and different types of electrolytes (aqueous and non-aqueous) are developed. Electrochemical tests are conducted in support of the development of an intelligent electron control system for hybrid supercapacitor configurations designed for practical applications.
The research team of the Department provides expertise in enhancing the performance characteristics of Ni-Zn rechargeable batteries through optimization of the Zn electrode design and of its active material by various conductive additives.

Staff

  • Antonia Stoyanova, Professor, PhD (head)
  • Galia Mitrova, Res. Assoc., PhD
  • Svetlana Veleva, Res. Assoc., PhD
  • Lubomir Soserov, Res. Assist.
  • Boriana Karamanova, PhD Student
  • Andrey Mladenov, Technologist
Staff

Projects (2011 - 2021)

  • "Innovative hybrid superconductors as a challenge for efficient, safe and environmentally friendly energy storage (SuperHyb) - Financing of fundamental scientific research on public challenges" ,  NSF, KP-06-OPR4/5, (2018-2021)
  • "Optimization of Zn electrode by introducing conductive ceramics in order to improve the performance of Ni / Zn rechargeable batteries" - Competition "Financing of fundamental scientific research of young scientists and postdocs, NSF,  KP-06-M29/3, (2018-2020)
  • "Development and electrochemical characterization of nanocomposite electrode materials for application in energy conversion and storage systems", BAS (2017-2019)
  • "Influence of electrolyte on the capacitive properties of hybrid supercapacitors", Program for career development of young scientists, BAS/DFNP-17-148 (2017-2018)
  • "Joint intercalation of alkali and alkaline earth ions in two- and three-dimensional structures: experimental and theoretical studies", NSF,  DN09/13 (2016-2017), in collaboration with IGIC-BAS
  • "Composites based on Ni(OH)2, MnO2 and activated carbon electrode material for supercapacitors hybrid", Program for career development of young scientists, MЕС-BAS/DFNP-42
  • "Development of new generation of electrode materials for electrochemical power sources based on bioproducts and green technologies", BAS (2014-2016)
  • "Energy storage systems based on asymmetric and hybrid supercapacitors with nanocomposite electrodes", NSF, E02/18 (2014-2017)

Publications (2011 - 2019)

  1. Ivanova, G., Stoyanova, A., Mladenov, M., Raicheff, R., Kovacheva, D.. Effect of the concentration of MnO2 in the composite electrode and the electrolyte on the electrochemical properties of a hybrid supercapacitor. Bulgarian Chemical Communications, 50 Special Issue A, Bulgarian Academy of Sciences, 2018, ISSN:0324-1130, 146-152.
  2. Soserov, L., Stoyanova, A., Boyadzhieva, T., Koleva, V., Kalapsazova, M.. Nickel-Manganese Structured and Multiphase Composites as Electrodes for Hybrid Supercapacitors. Electrochimica Acta, 283, Elsevier, 2018, ISSN:00134686, DOI:https://doi.org/10.1016/j.electacta.2018.06.191, 1063-1071.
  3. Stoyanova, A.. National conference “Sofia Electrochemical Days’2017” (SED’2017) 10-13 May, 2017, Sofia, Bulgaria. Bulgarian Chemical Communications, 50, Bulgarian Academy of Sciences, 2018, ISSN:0324-1130, 5-5.
  4. Lilov, P., Vasev, A., Stoyanov, L., Marinov, Y., Stoyanova-Ivanova, A., Stoyanova, A.. Electrochemical impedance study of HTSC ceramics YBCO and BSCCO in presence of electrolyte. Bulgarian Chemical Communications, 50A, BAS, 2018, ISSN:0324-1130, 153-157.
  5. Stoyanova, R., Koleva, V., Stoyanova, A.. Lithium versus Mono/Polyvalent Ion Intercalation: Hybrid Metal Ion Systems for Energy Storage. The Chemical Record, 18, John Wiley & Sons Inc., 2018, ISSN:Print ISSN: 1527-8999; Online ISSN: 1528-0691, DOI: doi.org/10.1002/tcr.201800081.
  6. Vasev, A., Lilov, P., Ivanova, G., Marinov, Y., Stoyanova, A., Mikli, V., Stoyanova-Ivanova, A.. Electrochemical impedance study of BSCCO (2212) cuprate ceramic additive to the zinc electrode in Ni-Zn batteries. Bulgarian Journal of Science Education, Chemistry, 27, 6, University of Sofia Press, 2018, ISSN:1313-1958 (Print) 1313-9118 (Online), 876-886.
  7. Soserov, L., Stoyanova, A., Boyadzhieva, T., Koleva, V., Kalapsazova, M., Nickel-Manganese Structured and Multiphase Composites as Electrodes for Hybrid Supercapacitors, Electrochimica Acta 283 (2018) 1063-1071.
  8. Stoyanova, R., Koleva, V., Stoyanova, A., Lithium versus Mono/Polyvalent Ion Intercalation: Hybrid Metal Ion Systems for Energy Storage, The Chemical Record 18 (2018), https://doi.org/10.1002/tcr.201800081.
  9. Ivanova, G., Stoyanova, A., Mladenov, M., Raicheff, R., Kovacheva, D., Effect of the concentration of MnO2 in the composite electrode and the electrolyte on the electrochemical properties of a hybrid supercapacitor. Bulgarian Chemical Communications, Bulgarian Academy of Sciences, 50A (2018) 146-152.
  10. Lilov, P., Vasev, A., Stoyanov, L., Marinov, Y., Stoyanova-Ivanova, A., Stoyanova, A., Electrochemical impedance study of HTSC ceramics YBCO and BSCCO in presence of electrolyte, Bulgarian Chemical Communications, 50A, (2018) 153-157.
  11. Veleva, S., Stoyanova, A., Raicheff, R., Kovacheva D., Mladenov, M., Electrochemical hybrid supercapacitors based on activated carbon and iron oxides. Journal of Progressive Research in Chemistry [JPRC], 4, 2, 2017, ISSN:2454-3136, 179-188. 
  12. Ivanova, G., Stoyanova, A., Soserov, L., Kovacheva, D., Karashanova, D., Influence of the structure and morphology MnO2 on the electrochemical performance of supercapacitor systems. Bulgarian Chemical Communications, 49, A, Bulgarian Academy of Sciences, 2017, 71-76.
  13. Soserov, L., Stoyanova, A., Stoyanova, R.. Activated nanoporous carbons as electrode materials for supercapacitors in aqueous electrolyte. Bulgarian Chemical Communications, 49, F, Bulgarian Academy of Sciences, 2017, 15-21.
  14. Soserov, L., Boyadzhieva, T., Koleva, V., Girginov, Ch., Stoyanova, A., Stoyanova, R., Effect of the electrolyte alkaline ions on the electrochemical performance of α-Ni(OH)2/ activated carbon composites in the hybrid supercapacitor cell. ChemistrySelect, 2, 23, Wiley-VCH, 2017, 6693-6698. 
  15. Girginov, Ch., Veleva, S., Kozhuharov, S., Stoyanova, A., Lefterova, E., Mladenov, M., Raicheff, R.. А comparative study on application of biogenic hematite and magnetite as electrode materials in hybrid supercapacitors. Journal of Chemical Technology and Metallurgy, 52, 3, EBSCO Publishing, 2017, 557-563.
  16. Mladenov, M., Stoyanov, L., Vassilev, S., Soserov, L., Effect of electrodes and cell structures on the properties of the PbO2//C-Pb quasi-asymmetric supercapacitor. Proc. 10th Intl. Conference on Lead-Acid Batteries,13-16 June 2017, Golden Sands, Bulgaria, 10,  2017, 61-64.
  17. Trenev, V., Raicheff, R., Mladenov, M.. Electrical vehicle oriented testing and optimization of nergy storage systems with novel asymmetric supercapacitors. Научни известия, 2, 2017, 236-240.
  18. Ivanova, G., Stoyanova, A., Soserov, L., Kovacheva, D., Karashanova, D., Influence of the structure and morphology MnO2 on the electrochemical performance of supercapacitor systems. Bulgarian Chemical Communications, Bulgarian Academy of Sciences, 49A, 2017, 71-76.
  19. Veleva, S., Stoyanova, A., Raicheff, R., Kovacheva D., Mladenov, M., Electrochemical hybrid supercapacitors based on activated carbon and iron oxides, Journal of Progressive Research in Chemistry [JPRC], 4, 2017, 179-188.
  20. Girginov, Ch., Veleva, S., Kozhuharov, S., Stoyanova, A., Lefterova, E., Mladenov, M., Raicheff, R., А comparative study on application of biogenic hematite and magnetite as electrode materials in hybrid supercapacitors, Journal of Chemical Technology and Metallurgy, 52, 2017, 557-563.
  21. Soserov, L., Stoyanova, A., Stoyanova, R., Activated nanoporous carbons as electrode materials for supercapacitors in aqueous electrolyte. Bulgarian Chemical Communications, Bulgarian Academy of Sciences, Bulgarian Chemical Communications, 49F, 2017, 15-21.
  22. L. Soserov, T. Boyadzhieva, V. Koleva, Ch. Girginov, A. Stoyanova, R. Stoyanova, Effect of the electrolyte alkaline ions on the electrochemical performance of α-Ni(OH)2/ activated carbon composites in the hybrid supercapacitor cell, Chemistry Select 2, 2017, 2, 6693 – 6698.
  23. Stoyanova, A., Islam, M., Borisov, G., Bredow, T., Lefterova, E., Slavcheva, E., Effect of Partial Replacement of Pt-Based Catalysts with Fe- and Co-for Oxygen Evolution Reaction in Pem Water Electrolysis: A Combined Theoretical and Experimental Study. Journal of Progressive Research in Chemistry, 3, 3, 2016, 158-165.
  24. Soserov, L., Boyadzhieva, T., Koleva, V., Stoyanova, A., Stoyanova, R., The capacitive performance of l-Ni(OH)2-based composites for hybrid supercapacitors. ECS Transaction, 74, 1, Electrochemical Society, 2016, 213-222.
  25. Veleva, S., Stoyanov, L., Stoyanova, A., Girginov, Ch., Mladenov, M., Kovacheva, D., Raicheff R., A hybrid supercapacitor: activated carbon/LiBF4/activated carbon-biogenic Fe2O3 composite. BULGARIAN CHEMICAL COMMUNICATIONS, 48, 4, Bulgarian Academy of Sciences, 2016, 758-762.
  26. Raicheff, R., Mladenov, M., Stoyanov, L., Boshkov, N., Bachvarov V., Novel current collector and active mass carrier of the zinc electrode for alkaline nickel-zinc batteries. BULGARIAN CHEMICAL COMMUNICATIONS, 48, 1, Bulgarian Academy of Sciences, 2016, 61-65.
  27. Stoyanova-Ivanova, A., Terzieva, S., Ivanova, G., Mladenov, M., Kovacheva, D., Raicheff, R., Georgieva, S., Blagoev, V., Zaleski, A., Mikli, V., The use of high -temperature superconducting cuprate as a dopant to the negative electrode in Ni-Zn batteries, Bulgarian chemical communications, 47, 1, 2015, 221 - 228.
  28. Stoyanov, L., Terzieva, S., Stoyanova, A., Stoyanova-Ivanova, A., Mladenov, M., Kovacheva, D., Raicheff, R., Superconducting BSCCO ceramics as additive to the zinc electrodе mass in rechargeable nickel-zinc batteries, Journal of Progressive Research in Chemistry [JPRC], 2, 2, 2015, 83 - 91.
  29. Ivanova S., Zhecheva E., Nihtianova D., Mladenov M., Stoyanova R., Electrochemical intercalation of Li+ into nanodomain Li4Ti5O12 , Journal of Alloys and Compounds, 2013, 561, 252-261
  30. Trenev V., Mladenov M., Stoyanov L., Computer controlled system for Ni-Zn cells charge and discharge testing, Complex Control Systems (2013) 113 – 118
  31. Markova-Velichkova M., Tumbalev V., Stoyanov L., Veleva S., Nihtiyanova D., Mladenov M., Raicheff R., Kovacheva D., XRD and TEM characterisation of the morphology of ZnO powders prepared by different methods, Bulg. Chem. Communic., 45, 2013, 427-433
  32. Mladenov. M., Alexandrova. K., Petrov. N.V., Tsyntsarski. B., Kovacheva. D., Saliyski. N., Raicheff. R., Synthesis and electrochemical properties of activated carbons and Li4Ti5O12 as electrode materials for supercapacitors, J. Solid State Electrochem., 17, 2013, 2101-2108
  33. Ivanova G., Stoyanova-Ivanova A., Terzieva S., Kovacheva D., Mladenov M., Blagoev B., Dimitrov D., Opportunites for improving the electrochemical characteristics of Ni-Zn batteries using high temperature superconducting ceramic, Proc. 12th Cryogenics International Conference 2012, Dresden, Germany, September 11-14, 2012, 346-350
  34. Mladenov M., Petrov N., Budinova T., Tsynsarski V., Saliyski N., Kovacheva D., Raicheff R., Synthesis and electrochemical properties of electrode materials for supercapacitors, Bulg. Chem. Commun., 43, 2011,125
  35. Nikolov R., Kovacheva D., Mladenov D., Velichkova N., Raicheff R., Tzvetkova P., On the relation between texture parameters and double layer capacitance of activated carbon, J. Univ. Chem. Technology and Metallurgy 46, 2011, 275-282
  36. Yoncheva M., Koleva V., Mladenov M., Sendova-Vassileva M., Nikolaeva-Dimitrova M., Stoyanova R., Zhecheva E., Carbon-coated nano-sized LiFe1-x MnxPO4 solid solutions (0 ≤ x ≤1) obtained from phosphate-formate precursors, J. Mater. Sci, 46, 2011, 7082 – 7089