Effect of gas diffusion layer compression on the polarization curves of a polymer electrolyte membrane fuel cell: Analysis using a polarization curve-fitting model

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• 作者：In-Su Han ; Sang-Kyun Park ; Chang-Bock Chung
• 关键词：Polymer Electrolyte Membrane Fuel Cell ; Gas Diffusion Layer ; Compression ; Polarization Curve ; Modeling
• 刊名：Korean Journal of Chemical Engineering
• 出版年：2016
• 出版时间：November 2016
• 年：2016
• 卷：33
• 期：11
• 页码：3121-3127
• 全文大小：837 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Industrial Chemistry and Chemical Engineering
  Catalysis
  Materials Science
  Biotechnology
  
• 出版者：Springer New York
• ISSN：1975-7220
• 卷排序：33

文摘

The effect of gas diffusion layer (GDL) compression on the polarization curves of a polymer electrolyte membrane fuel cell was analyzed using a polarization curve-fitting model. The polarization curves measured at four different GDL compression ratios were fitted with the model and were decomposed into an open circuit voltage and three over-voltages resulting from activation, ohmic, and mass-transport losses, respectively. The model fitting was excellent enough to use the model in the subsequent analysis of the GDL compression effect. The relationship between the over-voltages and the compression ratio was investigated by analyzing the estimated model parameters, and an optimal compression ratio was determined for the fuel cell. The proposed analysis method based on the polarization curve-fitting model can be applied to identifying quantitative differences of polarization curves under various operating conditions and designs for fuel cells.