IHTM PLAVI
University of Belgrade
Institute of Chemistry, Technology and Metallurgy
National Institute of the Republic of Serbia

grb BUUniversity of Belgrade

142032 Deposition of ultrafine powders of metals and alloys and nanostructured surfaces by electrochemical techniques

Financier: Ministry of Science and Environment, R. Serbia

Project type:

Basic Research

Duration:

2006.-2010.

Project Coordinator:

University of Belgrade, Institute of Chemistry, Technology and Metallurgy-Center for Electrochemistry, Belgrade

Participants:

University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Belgrade, Institute of Nuclear Sciences “Vinča”, Institute for Multidisciplinary Studies, Belgrade, Faculty of Technology and Metallurgy, Belgrade

Project Manager:

Miomir Pavlović, University of Belgrade, Institute of Chemistry, Technology and Metallurgy, Njegoševa 12, Belgrade

Number of Researchers:

8

Aim and Scope:

Subject of the research is electrodeposition of ultrafine metal powders, especially Fe, Ni, Co and their alloys, as well as their alloys with Mo, by different electrodeposition regimes. Because of their strategic importance, these investigations included characterization of metal powders and the correlation of the morphology and grain size distribution of powder particles with the decisive characteristics of powder. The relation between the morphology and grain size distribution of powder particles and the kinetic parameters of electrodeposition process, electrodeposition conditions and regimes were also considered. In this way the decisive characteristics of powders could be correlated with regimes and conditions in order to obtain metal and alloy powders with the properties defined in advance. Futhermore, disperse but adherent deposits with open porous structure which enable rapid transport of gas and liquid, and extremly high surface area are necessary for the development of electrodes for fuel cells, batteries and sensors. In contrary, ideally smooth surfaces are needed for microelectronic devices. Hence, the topic of this project would also include determination of conditions for formation of disperse and adherent (porous) and ideally smooth metal surfaces for metals of significance.

Major Results:

  • Optimal programmed regimes for electrodeposition of ultrafine powders of metals and alloys with required properties were defined;
  • Electrodeposition of ultrafine particles of powders with defined grain size and morphology were obtained;
  • It is possible to use direct application of these results in electrodeposition of precious metals powders; in this case the enlarged laboratory cell is also the industrial one;
  • New raw materials for application in modern technologies were obtained;
  • Conditions for obtaining electrodes with extremely high surface area were defined;
  • Conditions for electrodeposition of metal surfaces with nanostructured characteristics i.e., electrodes with pores and grains of the nanometar sizes were defined;

Publications:

  1. Jović, V.D., Jović, B.M., Pavlović, M.G., ¨Electrodeposition of Ni, Co and Ni-Co alloy powders¨, Electrochim. Acta, 51 (2006) 5468-5477.
  2. Nikolić, N.D., Popov, K.I., Pavlović, Lj.J., Pavlović, M.G., ¨The effect of hydrogen codeposition on the morphology of copper electrodepositis. I. The concept of effective overpotential", J.Electroanal.Chem., 588(2006)88-98.
  3. Nikolić, N.D., Popov, K.I., Pavlović, Lj.J., Pavlović, M.G., ¨Morphologies of copper deposits obtained by the electrodeposition at high overpotentials¨, Surface and Coatings Technology, 201(2006)560-566.
  4. Nikolić, N.D., Popov, K.I., Pavlović, Lj.J., Pavlović, M.G., ¨Determination of critical conditions for the formation of electrodeposited copper structures suitable for electrodes in electrochemical devices¨, Sensors, 7(2007)1-15.
  5. Maksimović, V.M., Pavlović, M.G., Pavlović, Lj.J., Tomić, M.V., Jović, V.D., ¨Morphology and growth of electrodeposited silver powder particles¨, Hydrometallurgy, 86(2007)22-26.
  6. Jović, V.D., Jović, B.M., Maksimović, V., Pavlović, M.G., ¨Electrodeposition and morphology of Ni, Co and Ni-Co alloy powders. Part II: Ammonium chloride supporting electrolyte¨, Electrochim. Acta, 52(2007)4254-4263.
  7. Nikolić, N.D., Pavlović, Lj.J., Pavlović, M.G., Popov, K.I., ¨Formation of dish-like holes and a channel structure in electrodeposition of copper under hydrogen co-deposition ¨, Electrochim. Acta, 52(2007)8096-8104.
  8. Nikolić, N.D., Pavlović Lj.J., Krstić S.B., Pavlović M.G., Popov K.I., “Influence of ionic equilibrium in the CuSO4-H2SO4-H2O system on the formation of irregular electrodeposits of copper”, Chemical Engineering Science 63, (2008)2824-2828.
  9. Jović, B.M., Jović, V.D., Maksimović, V.M., Pavlović, M.G., „Characterization of electrodeposited powders of the system Ni-Mo-O, Electrochim. Acta, 53(2008)4796-4804.
  10. Nikolić, N.D., Branković, G., Pavlović, M.G., Popov, K.I., »The effect of hydrogen co-deposition on the morphology of copper electrodeposits. II. Correlation between the properties of electrolytic solutions and the quantity of evolved hydrogen«, J.Electroanal.Chem., 621(2008)13-21.
  11. Nikolić, N.D., Branković G., Pavlović M.G., Popov K.I., “The effects of the pause to pulse ratio in the regime of pulsating overpotential on the formation of honeycomb-like structures”, Electrochemistry Communications, 11(2009)421-424.
  12. Nikolić, N.D., Krstić, S.B., Pavlović, Lj.J., Pavlović, M.G., Popov, K.I., “The mutual relation of decisive characteristics of electrolytic copper powder and effect of deposition conditions on them”, in “Electroanalytical Chemistry Research Trends”, Ed. Kenta Hayashi, NOVA Publishers, ISBN: 978-1-60456-278-1, Chapter 8, 2009, pp. 185-209.
  13. Nikolić, N.D., Pavlović, Lj. J., Pavlović, M.G., Popov, K.I., »Morphologies of electrochemically formed copper powders particles and their dependence on the quantity of evolved hydrogem«, Powder Technology, 185(2008)195-201.
  14. Nikolić, N.D., Branković, G., Maksimović, V.M., Pavlović, M.G., Popov, K.I., „Influence of potential pulse conditions on the formation honeycomb-like copper electrodes“, J.Electroanal.Chem., 635 (2009)111-119.
  15. Pavlović, Lj.J., Pavlović, M.M., Pavlović, M.G., Nikolić, N.D., Tomić, M.V., „Electrodeposition of Fe Powder from Citrate Containing Electrolytes”, Int. J. Electrochem. Sci., 5 (2010)1898-1910.
  16. Pavlović, M.G., Pavlović, Lj.J., Maksimović, V.M., Nikolić, N.D., Popov, K.I., „Characterization and Morphology of Copper Powder Particles as a Function of Different Electrolytic Regimes”, Int. J. Electrochem. Sci., 5 (2010)1862-1878.
  17. Popov, K.I., Nikolić, N.D., Krstić, S.B., Pavlović, M.G., ¨Physical modelling of representative particles of electrodeposited copper powders¨, J. Serb. Chem. Soc., 71(2006)397-400.
  18. Jović, V.D., Maksimović, V., Pavlović, M.G., Jović, B.M., ¨Morphology and Phase Composition of Ni-Co Alloy Powders Electrodeposited from Ammonium Sulfate-Boric Acid Electrolyte¨, Mater. Sci. Forum, 518(2006)307-312.
  19. Jović V.D., Maksimović V., Pavlović, M.G., Popov, K.I., ¨Morphology, internal structure and growth mechanism of electrodeposited Ni and Co powders¨, Journal of Solid State Electrochemistry, 10(2006)373-379.
  20. Jović, V.D., Jović, B.M., Pavlović, M.G., Maksimović, V., ¨Morphology and composition of Ni-Co alloy powders electrodeposited from ammoniacal electrolyte¨, Journal of Solid State Electrochemistry, 10(2006)959-966.
  21. Nikolić, N.D., Popov, K.I., Pavlović, Lj.J., Pavlović, M.G., ¨Phenomenology of a formation of a honeycomb-like structure during copper electrodeposition¨, J. Solid State of Electrochemistry, 11(2007)667-675.
  22. Nikolić, N.D., Pavlović, Lj.J., Pavlović, M.G., Popov, K.I., “Effect of temperature on electrodeposition of disperse copper deposits”, J. Serb.Chem.Soc. 72 (12) 1369-1381 (2007).
  23. Nikolić, N.D., Pavlović, Lj.J., Branković, G., Pavlović, M.G., Popov, K.I., „The ionic equilibrium in the CuSO4-H2SO4-H2O system and the formation of the honey-comb-like structure during copper electrodeposition“, J. Serb. Chem. Soc., 73(7)(2008)753-760.
  24. Maksimović, V.M., Pavlović, Lj.J., Jović, B.M., Pavlović, M.G., „Electrodeposition of Fe powder from acid electrolytes”, J. Serb. Chem. Soc., 73(8-9)(2008)861-870.
  25. Nikolić, N.D., Maksimović, V.M., Pavlović, M.G., Popov, K.I., „Cross section analysis of the morphology of electrodeposited copper obtained in the hydrogen co-deposition range“, J. Serb. Chem. Soc., 74(6)(2009)689-696.
  26. Maksimović, V.M., Pavlović, Lj.J., Pavlović, M.G., Tomić, M.V., “Characterization of copper powder particles obtained by electrodeposition as function of different current densities”, Journal of Applied Electrochemistry, 39, (2009) 2545-2552.
  27. Nikolić, N.D., Branković, G., Maksimović, V.M., Pavlović, M.G., Popov, K.I., „Application of pulsating overpotential regime on the formation of copper deposits in the range of hydrogen co-deposition“, J. Solid State Electrochem., 14(2010)331-338.

Contacts:

duki@tmf.bg.ac.rs