Date and place of birth:  29 October 1984, Minsk, Belarus

Academic degrees:

Degree in Chemistry (5-year program), Chemistry Department,  Belarusian State University, 2007
Degree Thesis: “Study of the effect of oxygen nonstoichiometry on the physicochemical properties of complex oxides”

Master degree in Materials Engineering (2-year program), Department of Materials and Ceramic Engineering, University of Aveiro, 2017. Degree Thesis: “Defect chemistry of pyrochlore-type (Gd,Ca)₂(Ti,Mo)₂O₇ for prospective electrocatalytic applications“ (Supervisor: Dr Aleksey Yaremchenko, Co-supervisor: Prof. Jorge Frade)

Employment and professional activities:

2011–now:  Research fellow, Department of Materials and Ceramic Engineering, CICECO, University of Aveiro

2007–2011: Junior researcher, Laboratory of ion exchange fibers synthesis and properties study, Institute of Physical Organic Chemistry, National Academy of Sciences of Belarus

Scientific Domain:

Physical Chemistry, Solid State Chemistry and Electrochemistry, Materials Science and Engineering

Present research interests:

Solid state chemistry of oxide materials;

Complex metal oxides; Crystal structure; Synthesis and characterization methods;

Relationships between oxygen nonstoichiometry and physicochemical properties;

High- and intermediate-temperature electrical and electrochemical measurements;

Ceramic materials for high-temperature electrochemical application;

Energy materials; Energy conversion and storage;

Solid oxide fuel cells; Solid oxide electrolyzer cells;

Mixed-conducting membranes;

Oxide thermoelectrics.

2017: R&D "SGH - SMART GREEN HOMES", Project No. 7678 (Ref. POCI-01-0247-FEDER-007678) (team member);

2015-2016:  “Materials for novel concepts of high-temperature electrochemical energy conversion and storage”, project IF/01072/2013/CP1162/CT0001, financed by the FCT, Portugal (team member)

2014-2015: "ORIEL - Oriented Lanthanum Silicate Thin Film Electrolytes for IT-SOFCS", project PTDC/CTM-CER/118933/2010, financed by the FCT, Portugal (team member)

2011-2013: “Novel methodological approaches to analyze ion transport mechanism in complex crystal lattices and to forecast performance-determining parameters of the oxide materials”, project PTDC/CTM-CER/114561/2009, financed by the FCT, Portugal (team member)

[1] K.V. Zakharchuk, E.N. Naumovich, M.V. Patrakeev, V.V. Kharton, Ionic transport in (La,Sr)₂FeO₄ solid solution, European Materials Research Society (E-MRS) 2013 Fall Meeting (Warsaw, Poland, 16-20 September 2013) (poster);

[2] K. Zakharchuk, E. Naumovich, S. Mikhalev, A. Yaremchenko, Assessment of electrical conductivity relaxation technique for the measurements of oxygen-ion diffusion in solids, 19th Meeting of the Portuguese Electrochemical Society and XVI Iberic Meeting of Electrochemistry (Aveiro, Portugal, 30 June – 2 July 2014) (oral);

[3] K. Zakharchuk, S. Obrębowski, E. Naumovich, A. Yaremchenko, (La,Sr)(Fe,Co)O₃-based cathode contact materials for intermediate-temperature solid oxide fuel cells, Electroceramics XV conference (Limoges, France, 27-29 june 2016) (poster); 

[4] K. Zakharchuk, M. Widenmeyer, D.O. Alikin, W. Xie, A. Tselev, J.R. Frade, A. Weidenkaff,A. V. Kovalevsky, Nanocomposite concept for ZnO-based thermoelectric materials, (Aveiro, Portugal, 18 18–20 July 2018) (oral);

[5] K. Zakharchuk, E. Kravchenko, M. Starykevich, O. Ignatenko, J. Grins, G. Svensson, V.Pankov,A. Yaremchenko,  Oxygen-deficient Ruddlesden-Popper Ln_1-xSr_1+xNiO_4-δ nickelates: Ceramic processing and studies ofoxygen-ionic transport (Aveiro, Portugal, 18–20 July 2018) (oral);

[6] K. Zakharchuk, E. Kravchenko, M. Starykevich, J. Grins, G. Svensson, J.R. Frade, A. Yaremchenko, Oxygen-deficient Ruddlesden-Popper Ln_1-xSr_1+xNiO_4-δ nickelates: Fabrication and oxygen permeability of dense ceramic membranes (Barcelona, Spain, 8-10 October 2018) (oral)

[11] K. V. Zakharchuk, M. Widenmeyer, D. O. Alikin, W. Xie, S. Populoh, S. M. Mikhalev, A. Tselev, J. R. Frade, A. Weidenkaff, A. V. Kovalevsky, A self-forming nanocomposite concept for ZnO-based thermoelectrics, J. Mater. Chem. A, 2018, 6, 13386, DOI: 10.1039/c8ta01463a.

[10] T.H. Gayathri, A.A. Yaremchenko, K. Zakharchuk, P. Abhilash, S. Ananthakumar, Impact of acceptor-type substitution on electrical transport properties of zircon-type EuVO₄, Journal of the European Ceramic Society, 2018, 38(1), pp. 145-151, DOI: 10.1016/j.jeurceramsoc.2017.07.013.

[9] E. Kravchenko, A. Neagu, K. Zakharchuk, J. Grins, G. Svensson, V. Pankov, A. Yaremchenko, High-temperature structural and electrical characterization of reduced oxygen-deficient ruddlesden-popper nickelates, Eur. J. Inorg. Chem., 2018, DOI: 10.1002/ejic.201800091 

[8] E. N. Naumovich, K. Zakharchuk, S. Obrębowski, A. Yaremchenko, (La,Sr)(Fe,Co)O₃-based cathode contact materials for intermediate-temperature solid oxide fuel cells, International Journal of Hydrogen Energy, 2017, Vol. 42, Issue 49,  29443-29453, DOI: 10.1016/j.ijhydene.2017.09.122

[7] T. H. Gayathri, A. A. Yaremchenko, K. Zakharchuk, P. Abhilasha, S. Ananthakumara, Impact  of acceptor-type  substitution  on  electrical  transport properties  of  zircon-type  EuVO₄, Journal of the European Ceramic Society, 2018, Vol.38, 145-151,  DOI: 10.1016/j.jeurceramsoc.2017.07.013.

[6] E. Kravchenko, K. Zakharchuk, A. Viskup, J. Grins, G. Svensson, V. Pankov, A. Yaremchenko, Impact of oxygen deficiency on the electrochemical performance of K₂NiF₄-type (La_1-xSr_x)₂NiO_4-δoxygen electrodes, ChemSusChem, 2017, Vol.10, 600-611, DOI: 10.1002/cssc.201601340.

[5] K. Zakharchuk, E. Kravchenko, D. P. Fagg, J. R. Frade, A. Yaremchenko, Mixed ionic-electronic conductivity and thermochemical expansion of Ca and Mo co-substituted pyrochlore-type Gd₂Ti₂O₇, RSC Advances, 2016, Vol.6, 70186-70196, DOI: 10.1039/c6ra14600g.

[4] T.H. Gayathri, A.A. Yaremchenko, K. Zakharchuk, Jose James, Effect of magnesium addition on the structural, microstructural and electrical properties of YVO₄, Journal of Alloys and Compounds, 2016, Vol.672, 549–557,DOI: 10.1016/j.jallcom.2016.02.210.

[3] E. Kravchenko, D. Khalyavin, K. Zakharchuk, J. Grins, G. Svensson, V. Pankov, A. Yaremchenko, High-temperature characterization of oxygen-deficient K₂NiF₄-type Nd_2-xSr_xNiO_4-δ (x = 1.0-1.6) for potential SOFC/SOEC applications, Journal of Materials Chemistry A, 2015, Vol.3, 23852-23863, DOI: 10.1039/C5TA06779K.

[2] K.V. Zakharchuk, A.A. Yaremchenko, D.P. Fagg, Electrical properties and thermal expansion of strontium aluminates, Journal of Alloys and Compounds, 2014, Vol.613, 232-237, DOI: 10.1016/j.jallcom.2014.05.225.

[1] N.M. Ferreira, A.V. Kovalevsky, E.N. Naumovich, A.A. Yaremchenko, K.V. Zakharchuk, F.M. Costa, J.R. Frade, Effects of transition metal additives on redox stability and high-temperature electrical conductivity of (Fe,Mg)₃O₄ spinels, Journal of the European Ceramic Society, 2014, Vol.34, 2339-2350, DOI: 10.1016/j.jeurceramsoc.2014.02.016.