Analysis of the Effects of Temperature and Doping on the Oxygen Ion and Proton Conduction of SOFC Electrolyte BZY

CSME 2023/05
Volume 44 No.2 : 179-184

Analysis of the Effects of Temperature and Doping on the Oxygen Ion and Proton Conduction of SOFC Electrolyte BZY

Cheng-Han Chiang^a, Long-Sun Chao^a and Yen-Hsin Chan^b
^aDepartment of Engineering Science, National Cheng Kung University Tainan, Taiwan, R.O.C..
^bDepartment of Mechanical and Computer-Aided Engineering, Feng Chia University Taichung, Taiwan, ROC

Abstract: This article uses molecular simulation to inves-tigate the effects of doping and temperature on the dif-fusion coefficients of oxygen ions and proton in the electrolyte of solid oxide fuel cells. By comparing dif-ferent doping ratios and operating temperatures, it is found that for the intermediate temperature electrolyte BZY, doping with 13.6% Y provides the best proton and oxygen ion diffusion coefficients. In addition to affecting the transport capabilities of the electrolyte, the doping ratio also affects how temperature influ-ences the diffusion ability of the electrolyte.

Keywords: Solid Oxide Fuel Cell (SOFC); Molecular dynamic (MD); Diffusion coefficient (DC);

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