Engineering Lung-Inspired Flow Field Geometries for Electrochemical Flow Cells with Stereolithography 3D Printing

dc.affiliation.dptoUC3M. Departamento de Ingeniería Térmica y de Fluidoses
dc.affiliation.grupoinvUC3M. Grupo de Investigación: Mecánica de Fluidoses
dc.contributor.authorMuñoz Perales, Vanesa
dc.contributor.authorVand Der Heijden, Maxime
dc.contributor.authorGarcía-Salaberri, Pablo A.
dc.contributor.authorVera Coello, Marcos
dc.contributor.authorForner Cuenca, Antonio
dc.contributor.funderEuropean Commissionen
dc.description.abstractElectrochemical flow reactors are increasingly relevant platforms in emerging sustainable energy conversion and storage technologies. As a prominent example, redox flow batteries, a well-suited technology for large energy storage if the costs can be significantly reduced, leverage electrochemical reactors as power converting units. Within the reactor, the flow field geometry determines the electrolyte pumping power required, mass transport rates, and overall cell performance. However, current designs are inspired by fuel cell technologies but have not been engineered for redox flow battery applications, where liquid-phase electrochemistry is sustained. Here, we leverage stereolithography 3D printing to manufacture lung-inspired flow field geometries and compare their performance to conventional flow field designs. A versatile two-step process based on stereolithography 3D printing followed by a coating procedure to form a conductive structure is developed to manufacture lung-inspired flow field geometries. We employ a suite of fluid dynamics, electrochemical diagnostics, and finite element simulations to correlate the flow field geometry with performance in symmetric flow cells. We find that the lung-inspired structural pattern homogenizes the reactant distribution throughout the porous electrode and improves the electrolyte accessibility to the electrode reaction area. In addition, the results reveal that these novel flow field geometries can outperform conventional interdigitated flow field designs, as these patterns exhibit a more favorable balance of electrical and pumping power, achieving superior current densities at lower pressure loss. Although at its nascent stage, additive manufacturing offers a versatile design space for manufacturing engineered flow field geometries for advanced flow reactors in emerging electrochemical energy storage technologies.en
dc.description.sponsorshipMinisterio de Ciencia, Innovación y Universidades (España)es
dc.description.sponsorshipAcknowledgments This work has been partially funded by FEDER/Ministerio de Ciencia, Innovación y Universidades - Agencia Estatal de Investigación/Projects RTC-2017-5955-3, PID2019-106740RB-I00/AEI/10.13039/501100011033, and EIN2020-112247. A.F.-C. gratefully acknowledges financial support from the Dutch Research Council (NWO) through the Talent Research Program Veni (17324) and the 4TU High Tech Materials (P70355).en
dc.identifier.bibliographicCitationACS Sustainable Chemistry and Engineering, (2023), 11 (33), pp.:12243−12255en
dc.identifier.publicationtitleACS Sustainable Chemistry and Engineeringen
dc.publisherAmerican Chemical Societyen
dc.relation.projectIDGobierno de España. PID2019-106740RB-I00es
dc.rights© 2023 The Authorsen
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaen
dc.rights.accessRightsopen accessen
dc.subject.otherAqueous redox flow batteriesen
dc.subject.otherElectrochemical diagnosticsen
dc.subject.otherFlow reactoren
dc.subject.otherFractal geometriesen
dc.subject.otherHigh performanceen
dc.subject.otherHomogeneous electrolyte distributionen
dc.subject.otherLung inspired designen
dc.subject.otherNumerical simulationen
dc.titleEngineering Lung-Inspired Flow Field Geometries for Electrochemical Flow Cells with Stereolithography 3D Printingen
dc.typeresearch articleen
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
7.33 MB
Adobe Portable Document Format