The aim of the project is to develop iron-based spinel-type oxide catalysts with a formula FexM1-xOy (M=Ni, Co, or Cu) on stainless-steel substrates for oxygen evolution reaction (OER) with overpotential less than 0.35 V and retention of more than 90 percent after 100h. The formation of nanostructured, mechanically, and chemically resistant FexM1-xOy (M=Ni, Co, or Cu) thin films on stainless steel substrates will be carried out using magnetron sputtering and/or electrochemical deposition techniques. Synthesis conditions (target material, deposition rate, substrate type and temperature, potential (in the case of electrodeposition)) will be changed to define optimal parameters. For better characterisation of composition, structure, and morphology of deposited films austenitic stainless-steel plates (AISI304, AISI316, AISI302 and/orAISI321) will be tested firstly. To intensify OER process FexM1-xOy (M=Ni, Co, or Cu) films will be formed on stainless-steel-based foil and mesh. Detailed analysis of the surface peculiarities (porosity, morphology, particle shape, etc.), desired structure, and ratio of various metals in Fe-based oxides will be carried out using innovative methods of instrumental analysis. Formed composites will be evaluated for electrocatalytic activity in OER. The most relevant parameters of their efficiency will be determined: reaction initiation potential, overpotential at 10 mA?cm?2 and 100 mA?cm?2, required current density, faradaic efficiency, long-term stability (>100 hours), quantity of generated O2.
Project funding:
Research Council of Lithuania (RCL), Projects of Postdoctoral fellowships funded by the state budget of the Republic of Lithuania
Project results:
Three international internships, two scientific paper published in foreign periodic scientific publications having an impact factor in the Clarivate Analytics Web of Science database, and participation in the international conference are planned during this project.
Period of project implementation: 2022-11-03 - 2024-11-02
Project coordinator: Kaunas University of Technology
