Introduction
It is well known that for optimal performance of electrochemical energy storage and conversion devices, it is necessary to have a nonplanar electrode to increase reaction area. One requires a porous electrode with multiple phases that can transport the reactant and products in the electrode while also undergoing reaction [1]; an analogy in heterogeneous catalysis is reaction through a catalyst particle [2]. For traditional devices, porous electrodes are often comprised of an electrolyte (which can be solid or liquid) that carries the ions or ionic current and a solid phase that carries the electrons or electronic current. In addition, there may be other phases such as a gas phase (e.g., fuel cells). Schematically one can consider the porous electrode as a transmission-line model as shown in Fig. 1.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Newman J, Thomas-Alyea KE (2004) Electrochemical systems, 3rd edn. Wiley, New York
Fogler HS (1992) Elements of chemical reaction engineering, 2nd edn. Prentice-Hall, Upper Saddle River
Weber AZ, Newman J (2004) Modeling transport in polymer-electrolyte fuel cells. Chem Rev 104:4679–4726
Bird RB, Stewart WE, Lightfoot EN (2002) Transport phenomena, 2nd edn. Wiley, New York
Dullien FAL (1992) Porous media: fluid transport and pore structure, 2nd edn. Academic, New York
Bruggeman DAG (1935) Calculation of various physics constants in heterogenous substances I Dielectricity constants and conductivity of mixed bodies from isotropic substances. Annalen Der Physik 24:636–664
Pintauro PN, Bennion DN (1984) Mass-transport of electrolytes in membranes. 1. Development of mathematical transport model. Ind Eng Chem Fundam 23:230–234
Vetter KJ (1967) Electrochemical kinetics. Academic, New York
Weber AZ, Balasubramanian S, Das PK (2012) Proton exchange membrane fuel cells. In: Sundmacher K (ed) Advances in chemical engineering: fuel cell engineering: model-based approaches for analysis, control and optimization, vol 41. Elsevier, Amsterdam, pp 65–144
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2014 Springer Science+Business Media New York
About this entry
Cite this entry
Weber, A.Z. (2014). Macroscopic Modeling of Porous Electrodes. In: Kreysa, G., Ota, Ki., Savinell, R.F. (eds) Encyclopedia of Applied Electrochemistry. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-6996-5_332
Download citation
DOI: https://doi.org/10.1007/978-1-4419-6996-5_332
Published:
Publisher Name: Springer, New York, NY
Print ISBN: 978-1-4419-6995-8
Online ISBN: 978-1-4419-6996-5
eBook Packages: Chemistry and Materials ScienceReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics