The purpose of present study is to investigate the dynamic response of two conventional types of solid oxide fuel cells to the inlet air mass flow rate variation. A dynamic compartmental model based on CFD principles is developed for two typical planar and tubular SOFC designs. The model accounts for transport processes (heat and mass transfer), diffusion processes, electrochemical processes, a...

Identification of ongoing processes in solid oxide fuel cells (SOFC) enables both optimizing the operating environment and prolonging lifetime SOFC. The Levenberg–Marquardt algorithm (LMA) is commonly used characterization unknown electrochemical within SOFC by extracting equivalent electrical circuit (EEC) parameter values from impedance spectroscopy (EIS) data. LMA an iteration optimization r...

This study discussed the performance of an integrated indirect gasification solid oxidation fuel cell (IIG-SOFC) in consideration LCA thinking. Generally, hydrogen sulfide (H2S) gasified biomass causes voltage a stack to decline over time. Although resource such as sewage sludge are carbon-neutral, SOFC creates environmental disadvantage global warming potential (GWP); such, it is necessary rem...

This communication reports on the design, fabrication and testing of special high temperature Si/SiN based micro-hotplates as micromachined platforms for micro-SOFCs. Different designs and materials have been evaluated to realise micro-heating platforms compatible with spray pyrolysed anode, cathode and electrolytes materials. The potential of these micromachined platforms for further integrati...

A SOFC temperature control system based on adaptive multimodel predictive (MMPC) method is designed for a solid oxide fuel cell-gas turbine (SOFC-GT) hybrid with anode and cathode ejectors. Two multi-input multi-output MPCs (under 100% 90% load) are to the inlet temperatures. The accuracy of identified linear models both more than 95%. performance MMPC compared single MPC traditional PI. compar...

in recent years, using new methods in utilization of energy resources has become necessary due to environmental pollution and restriction of energy resources. the hybrid system presented in this article produced power with sofc and stirling engine. the purpose is to analyze a 50 kw solid oxide fuel cell that could produce enough thermal energy for a 10 kw stirling engine working in the hybrid s...

an analytical model is proposed and an analysis is conducted for solid oxide fuel cells with goals of higher power densities. the analytical model is designed to help optimize the size, spacing, and geome-trical shapes of current collectors. the model fully considers the ohmic, species concentration, and activa-tion polarizations. from the analysis of several cases, it is recommended that 3d pi...

the fuel cells are distinguished as generating of green allocable energy and are electrochemical devices of low environmental impact. porous nanocrystalline strontium-doped lanthanum manganite la0.8sr0.2mno3 (lsm) cathode materials were prepared by mechanochemical route in various grinding times. carbon black was employed to produce pores. the formation of lsm single phase was studied by x-ray ...

This article focuses on perovskite materials for application as cathode material in solid oxide fuel cells. In order to develop new promising materials it is helpful to classify already known perovskite materials according to their properties and to identify certain tendencies. Thereby, composition-dependent structural data and materials properties are considered. Structural data under consider...