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Modeling of Solid Oxide Fuel Cells with Particle Size and Porosity Grading in Anode Electrode
Author(s) -
Liu L.,
Flesner R.,
Kim G.Y.,
Chandra A.
Publication year - 2012
Publication title -
fuel cells
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.485
H-Index - 69
eISSN - 1615-6854
pISSN - 1615-6846
DOI - 10.1002/fuce.201100095
Subject(s) - anode , electrode , materials science , porosity , polarization (electrochemistry) , microstructure , solid oxide fuel cell , oxide , grading (engineering) , process engineering , chemical engineering , nuclear engineering , composite material , metallurgy , chemistry , engineering , civil engineering
Solid oxide fuel cells (SOFCs) have the potential to meet the critical energy needs of our modern civilization and minimize the adverse environmental impacts from excessive energy consumption. They are highly efficient, clean, and can run on variety of fuel gases. However, little investigative focus has been put on optimal power output based on electrode microstructure. In this work, a complete electrode polarization model of SOFCs has been developed and utilized to analyze the performance of functionally graded anode with different particle size and porosity profiles. The model helps to understand the implications of varying the electrode microstructure from the polarization standpoint. The work identified conditions when grading can improve the cell performance and showed that grading is not always beneficial or necessary.