Modeling And Simulation Of Sofc Made Up Of Ni-Gdc As Anode, Gdc As Electrolyte And Lscf As Cathode

Abstract

Solid oxide fuel cell (SOFC) is the technologies which are gaining more attention in the modern era due to its optimal power generation boast with enough electrical efficiency for household devices and automobiles [1–11]. SOFCs are devices in which the chemical energy is directly converted into electrical energy with negligible emission. SOFCs have low pollution characteristics, high efficiency (~60%), and possess expanded fuel selection with little environmental effects. A single cell component of SOFCs is consisting an anode, cathode and an electrolyte which are stacked layer by layer to produce higher amount of power. Modeling and Simulation of the performance of SOFC made up of Ni-GDC as anode, GDC as electrolyte and LSCF as cathode was the goal of this study. It is clear that experimental study of SOFC is very expensive due to its characterization of equipment’s and chemical’s cost. Hence, the researcher motivated to study the properties of SOFC using mathematical simulation. The mathematical calculation of independent variables of current density, calculation of variables that are dependent on current density, and display of the result were the procedures followed in Math Lab software modeling methodologies. The results of this model demonstrated that a SOFC’s polarization curve was dominated by ohm loss polarization between 0-0.6volts, followed by activation polarization between 0.6−1.2volts, and concentration loss polarization between 1.2−1.4volts with current density. The chemical species diffuses at a faster rate at the Ni−GDC side than at the LSCF side in order to generate electrical power. Anode is the electrode that undergoes the oxidation process, while the cathode is the electrode that undergoes the reduction process and the electrolyte’s purpose is to allow oxygen ion transfer, prevent electrical conductance, and prevent gases moving from one side to the other. The result showed that the cell potential fell as current density increased, however the power density remained proportional to current density. Experimental data from the literature was used to validate the predicted performance. The predicted and experimental values were found to be in the proved resources.