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dc.contributor.authorMourouga, Gaël-
dc.contributor.authorSansone, Caterina-
dc.contributor.authorAlloin, Fannie-
dc.contributor.authorIojoiu, Cristina-
dc.contributor.authorSchumacher, Jürgen-
dc.descriptionAcknowledgements: This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie Grant Agreement no. 765289. Project website: www.flowcamp-project.eude_CH
dc.description.abstractThe all-quinone organic redox flow battery shows promise as a low-cost, sustainable energy storage device. As most flow batteries, membranes play a critical role in the performance and cycling stability of the device. In this work, we aim to characterize the transport processes in cation exchange membranes via multicomponent diffusion theory [1] in order to predict crossover rates, and estimate trade-offs between performance and stability. Characterization experiments on the membranes (namely: conductivity, proton transport number, electro-osmotic coefficient and permeability coefficient for quinones) allow to establish a multicomponent diffusion system of equations, solved using MATLAB. The model is validated with crossover fluxs measurements under varying conditions. The influence of thickness, water content and conductivity is assessed, for different commercial membranes (Nafion® and Fumasep). Their impact on cell performance is estimated through an in-house 1D electro-chemical model of the cells developed using COMSOL Multiphysics. This model accounts for the kinetics of the redox reactions happening at the electrode/electrolyte interface (taking in account mass and charge transports), in a flow-through graphite felt electrode with 0.2M anthraquinone (negative side) and 0.2M benzoquinone (positive side) dissolved in sulfuric acid [2]. The model is validated using cell testing equipment provided by JenaBatteries under the scope of the FlowCamp project.de_CH
dc.publisherTechnische Universität Braunschweigde_CH
dc.relation.ispartof16th symposium on modeling and experimental validation of electrochemical energy technologies (ModVal 2019) : book of abstractsde_CH
dc.rightsNot specifiedde_CH
dc.subjectOrganic redox flow batteriesde_CH
dc.subjectMembrane modeling and simulationde_CH
dc.subject.ddc621.3: Elektrotechnik und Elektronikde_CH
dc.titleA multicomponent diffusion model for organic redox flow battery membranesde_CH
dc.typeKonferenz: Posterde_CH
zhaw.departementSchool of Engineeringde_CH
zhaw.organisationalunitInstitute of Computational Physics (ICP)de_CH
zhaw.conference.detailsModVal 2019, Braunschweig, Germany, 12 - 13 March 2019de_CH
zhaw.funding.euinfo:eu-repo/grantAgreement/EC/H2020/765289// European Training Network to improve materials for high-performance, low-cost next- generation redox-flow batteries/FlowCampde_CH
zhaw.parentwork.editorKrewer, Ulrike-
zhaw.parentwork.editorLaue, Vincent-
zhaw.parentwork.editorRedeker, Andreas-
zhaw.publication.reviewEditorial reviewde_CH
zhaw.webfeedErneuerbare Energiende_CH
zhaw.funding.zhawRedox Flow Battery Campusde_CH
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