Encyclopedia of Applied Electrochemistry

2014 Edition
| Editors: Gerhard Kreysa, Ken-ichiro Ota, Robert F. Savinell

Macroscopic Modeling of Porous Electrodes

Reference work entry
DOI: https://doi.org/10.1007/978-1-4419-6996-5_332


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.
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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Lawrence Berkeley National LaboratoryBerkeleyUSA