The Effect of the Anode Thickness on Electrolyte Supported SOFCs

So Yeon Shin, Dae‐Kwang Lim, Taehee Lee, Sang‐Yun Jeon

2023Journal of Electrochemical Science and Technology15 citationsDOI Open Access PDF

Abstract

<p>Planer-type electrolyte substrates are often utilized for stack manufacturing of electrolyte-supported solid oxide fuel cells (ES-SOFCs) to fulfill necessary requirements such as a high mechanical strength and redox stability. This work did an electrochemical analysis of ES-SOFC with different NiO-YSZ anode thicknesses to find the optimal value for the high performance of the fuel cell. The cell resistivities were constant at anode thickness between 25–58 μm, but a thick anode (74 μm) caused a high electrode resistivity leading to a dramatic reduction in cell performance. A stability test was performed for 50 hours at 700<italic>°C</italic>, and the results showed a degradation rate of 0.3% per 1000 h by extrapolated fitting.</p>

Topics & Concepts

AnodeElectrolyteSolid oxide fuel cellMaterials scienceStack (abstract data type)ElectrochemistryOxideNon-blocking I/OElectrical resistivity and conductivityElectrodeRedoxChemical engineeringComposite materialChemistryMetallurgyElectrical engineeringCatalysisPhysical chemistryComputer scienceProgramming languageEngineeringBiochemistryAdvancements in Solid Oxide Fuel CellsElectronic and Structural Properties of OxidesFuel Cells and Related Materials