Abstract: A serpentine flow field is a commonly used design in proton exchange membrane fuel cells (PEMFCs). â–º The performance improvement was due to an increased pressure drop. â–º Performance distribution was more uniform for 10-channel than for 6-channel flow field. â–º 10-Channel flow field improved a fuel cell's performance at high current. â–º A segmented cell was used to study 6- and 10-channel serpentine flow fields. Highlights: â–º Effects of a flow field design on PEMFC were investigated. Bender, Guido Bethune, Keith Rocheleau, Richard International Nuclear Information System (INIS) This fundamental work on electrolyte flow distributions of limiting reactant availability will contribute to a better understanding of limits on electrochemical performance in flow batteries with serpentine flow field designs and should be helpful to optimizing flow batteries.Ī segmented cell approach for studying the effects of serpentine flow field parameters on PEMFC current distribution The results predict reasonably well observed experimental data without using any adjustable parameters. We also estimate the maximum current densities associated with stoichiometric availability of electrolyte reactant flow penetrations through the porous carbon electrodes. Here we report a three-dimensional model of a serpentine flow field over a porous carbon electrode to examine the distributions of pressure driven electrolyte flow penetrations into the porous carbon electrodes. Nevertheless, the fundamental mechanisms involved with improved current density in flow batteries with serpentine flow field designs have been not fully understood. Redox flow batteries with flow field designs have been demonstrated to boost their capacities to deliver high current density and power density in medium and large-scale energy storage applications.

Redox flow batteries with serpentine flow fields: Distributions of electrolyte flow reactant penetration into the porous carbon electrodes and effects on performance

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