Project 17

Structural, impedance and electron microscopic studies of multilayer systems for a low-temperature (600°С) fuel cell

The temperature dependence of the conductivity of ZrO₂-Y₂O₃ films in comparison with the ceramic sample.

Area of application

Low-temperature (600°С) fuel cells, oxygen sensors.

Brief description

Structural, impedance, and microscopic studies of multilayer films of ceramic electrolyte of different thickness in comparison with the ceramic sample were performed. The optimization of the chemical composition has been carried out and the chemical stability of the data of multilayer systems has been studied. On the basis of the studied multilayer systems, a low-temperature (600°С) fuel cell was developed and its electrophysical properties were studied.

Expected results

A multilayered system consisting of porous films of anode and cathode materials, separated by a dense electrolyte film by the method of tape casting, is manufactured. On the basis of the received multilayer system, an experimental model of the fuel cell was made and its testing was carried out.

Advantages

Development of scientific methods and approaches for the synthesis of a multilayer system consisting of gas-permeable layers of thick films of anode and cathode material and a dense electrolyte film. The low-temperature (600°С) fuel cell produced has higher performance characteristics compared to a commercial analogue. Thus, fuel cells developed by model fuel gas demonstrated a maximum specific power of 4.2 mW / cm², while commercial - only 2.8 mW / cm².

Competitor

Siemens Westinghouse Power Corp.,
Global Thermoelectric,
Argonne National Laborat

Project development

The technology of obtaining vacuum-density polycrystalline bulk materials, gas-tight thin and thick films with a high level of oxygen conductivity in the region of average temperatures (500-600°С) on the basis of zirconium oxide with a structure of cubic fluorite, stabilized with complex scandium-containing additives was developed. A low-temperature (600°С) fuel cell has been manufactured, which has the highest performance characteristics compared with its commercial counterpart.

Intellectual property

Slobodyanyuk I.O., Rusetsky I.A., Kolbasov G.Y., Kobylyanska S.D., Belous A.G. Element with Li-conducting membrane for photoelectrochemical hydrogen production / Ukraine patent for utility model No 73554 from 25.09.2012 p.

Yanchevski A.Z., Belous A.G., Kovalenko L.L. A method for producing oxygen-conducting ceramics based on zirconium dioxide doped by oxides of scandium and iron / Ukraine patent for utility model No 94285 from 10.11.2014 p.