SVIBOR - Project code: 1-07-061


Strossmayerov trg 4, HR - 10000 ZAGREB
tel.: +385 1 459 44 44, fax: +385 1 459 44 69


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Project code: 1-07-061


Main researcher: METIKOŠ-HUKOVIĆ, MIRJANA (30602)

Type of research: basic
Duration from: 01/01/91. to 12/31/93.

Papers on project (total): 113
Papers on project quoted in Current Contents: 38
Institution name: Fakultet kemijskog inženjerstva i tehnologije, Zagreb (125)
Department/Institute: Department of Electrochemistry
Address: Savska cesta 16/I
City: 10000 - Zagreb, Croatia
Phone: 385 (01) 430-700
Fax: 385 (01) 430-700
Fax: 385 (041) 450-725

Summary: The project focused on the investigations of structural properties of the electrificated solid/electrolyte interface and dielectric properties of thin surface films, as well as the mechanism of charge transfer across the interphase boundaries and surface films. Simultaneously with the characterization of the physical properties of a solid phase, the surface (electrochemical) reactions were studied with a view to collect the results in fundamental and applicable categories of investigations. The following systems were investigated: - transition metals and their alloys, with thin semiconducting passive surface films, - valve (hydride) metals, with barrier insulating surface films, - metallic glasses, with thin passive surface films, and - organic coatings on metal substrate. Besides the improvements in basic knowledge and their possible application, the principal benefit of these studies was to educate young scientists and students(1) for such a promising field. The data were treated applying the mathematical models and algorithms, developed through studies of electrochemical kinetics, electrochemistry of semmiconducting and insulating materials, as well as solid-state physic. The studies were performed using in-situ techniques (electrochemical spectroscopy, i.e. cyclic voltammetry (CV), chronoamperometry (CA), chronopotentiometry (CE), electrochemical impedance spectroscopy (EIS) and photoelectrochemical spectroscopy (PES)) and ex-situ techniques (Auger Electron Spectroscopy (AES), X-ray Photoelectronic Spectroscopy (XPS), Scanning Electron Microscopy (SEM), X-ray Diffraction and Energy Dispersion X-ray Spectroscopy (EDXS)). -------------------------------------------------- (1) Six young scientist achieved Master degree, and two achieved Ph.D. degree, during the time of project duration. Except one, all of them were involved in work on the project. Three Dissertations and two Master theses will be completed within next six months. Ten Diploma works were made in the area of the project title (theme), and four student works were awarded with the "Rector Award for the Best Written Students Work" in 1992, 1993, 1994 and 1995.

Keywords: surfaces, materials, thin solid films, electrochemistry, energy conversion, catalysis, corrosion

Research goals: The objective of the project is to define: - the relation between the electronic structure, electric, dielectric and solid-state surface properties and properties of the solid-liquid interfaces, - the mechanism of charge transfer (conductivity) of thin surface film formation and decomposition processes, - the mechanism of thin passive films electronic conductivity, - the mechanism and kinetics of nucleation processes for new phase segregation, - the mechanism and kinetics of solid-state transformations, - the electronic, electrical and dielectrical properties of surface films, - the corrosion stability of materials against the anodic and cathodic decomposition, - the corrosion kinetics parameters and adsorption isotherms The systems proposed for investigation are of a great interest for the development of new technologies, since they include models which are significant in theory and in application. These are: - metal/electrolyte, - semiconductor/electrolyte, - metal/oxide film/electrolyte - metal/organic coating/electrolyte The performed investigations provide a profound understanding of the influence of surface state of material on the various types of electrode processes important in energy conversion, in catalysis, in corrosion and corrosion prevention, and in organic and inorganic synthesis.


  1. Name of project: Performances of Catalysts for the electrooxidation of Organic Fuels in Acid Electrolytes
    Name of institution: Perfomanse katalizatora za elektrooksidaciju organiskih goriva u kiselim elektrolitima
    City: Juelich, Germany


  1. Name of institution: Forschungszentrum Juelich GmbH
    Type of institution: State institute
    Type of cooperation: Joint project
    City: Juelich, Germany

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Last update: 10/10/95