Here, we hypothesized that large pore size conductive foams such as reticulated vitreous carbons (RVCs) could offer a stationary electron transfer backbone for EFC cell fixtures and help decrease the inter-particle electron conduction distance in large channel thicknesses. Contrary to the common approach used in flowable electrochemical systems, currently proposed cell fixtures for flowable electrodes does not involve any high-surface area electrodes due to concerns over clogging and other flow related issues. Motivated by this, this study aims to investigate the feasibility of high-porosity conductive foams as three-dimensional current collectors in EFC cell fixtures. To accomplish this, flow cells containing RVCs selected from different porosities have been subjected to electrochemical testing under static and intermittent flow conditions. For the same electrode composition, a significant improvement in capacity (up to 2x) and in power density (up to 10x) has been observed with the utilization of conductive foams in the cell fixtures.
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