An Investigation of the Effects of Electrode Preparation Parameters on the Performance of Phosphoric Acid Fuel Cell Cathodes
Abstract
We have investigated the effect of electrode fabrication parameters (ie Teflon content and sintering temperature) on cathodes for phosphoric acid fuel cells. We evaluated these cathodes in 98% phosphoric acid at 170°C and correlated their performance with their morphological characteristics. Additionally, we derived expressions and values for the oxygen gain under conditions of activation polarization and joint activation and diffusion polarization. We observed that with optimum electrode fabrication parameters, electrode performance was dominated by activation polarization up to current densities of about 0.6 A cm-2. Finally, we observed that the underlying factor affecting electrode performance is the percent acid occupation of the electrocatalyst layer. The optimum value of this parameter is independent of the specific electrode fabrications used in our study.
Recommended Citation
N. Giordano et al., "An Investigation of the Effects of Electrode Preparation Parameters on the Performance of Phosphoric Acid Fuel Cell Cathodes," Electrochimica Acta, vol. 35, no. 9, pp. 1411 - 1421, Elsevier, Jan 1990.
The definitive version is available at https://doi.org/10.1016/0013-4686(90)85014-E
Department(s)
Physics
Keywords and Phrases
Cathodes--Performance; Oxygen; Phosphoric Acid, Electrocatalyst; Phosphoric Acid Fuel Cell Cathodes; Tafel Slope, Fuel Cells
International Standard Serial Number (ISSN)
0013-4686
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 1990 Elsevier, All rights reserved.
Publication Date
01 Jan 1990
