Abstract
The overview paper considers the difference of electrical characterization methods for the electrodes and electrolytes of SOFC. Features of theuse of IS for SOFC electrolytes with Debye response was shown. A comprehensive study of possible non-Debye relaxation mechanisms in SOFC materials was made. The definition of microstructure parameters in the case of non-Debye representation was shown on the example of experimental study of 10Sc1CeSZ ceramics. Ref. 22, Fig. 8, Tables 2.
Highlights
What is a solid oxide fuel cell?Fuel cells are the devices which produce electricity and heat from electrochemical reaction of hydrogen and/or carbon monoxide fuel with oxygen
The structure of a porous electrode is modeled in porous electrode theory (PET) as cylindrical pores containing the electrolyte, while the pore wall corresponds to the surface of the solid electronically conducting electrode
The method of electrical characterization of different components of solid oxide fuel cells depends on the porosity and content of metallic particles in the material
Summary
Fuel cells are the devices which produce electricity and heat from electrochemical reaction of hydrogen and/or carbon monoxide fuel with oxygen. Fuel cell technology produces clean, efficient, reliable electrical power to almost any device requiring it [2]. SOFCs (solid oxide fuel cells) use a solid oxide electrolyte to conduct negative oxygen ions from the cathode to the anode. Oxygen gas molecules on the cathode react with the incoming electrons from the external circuit to form oxide ions, which migrate through the oxide ion–conducting electrolyte to the anode. The oxide ions react with the fuel to form water (and/or carbon dioxide), liberating electrons, which flow from the anode through the external circuit to the cathode to produce electricity. Due to continuous supply by fuel and oxygen, these electrochemical reactions generate electricity continuously [3]
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