Deconvoluting charge-transfer, mass transfer, and ohmic resistances in phosphonic acid–sulfonic acid ionomer binders used in electrochemical hydrogen pumps
Karthik Arunagiri, Andrew Jark-Wah Wong, Luis A. Briceno-Mena, Hania Mohamed Gaber Hassan Elsayed, José A. Romagnoli, Michael J. Janik, Christopher G. Arges
Abstract
This work reveals how electrode binders affect reaction kinetics, ionic conductivity, and gas transport in electrochemical hydrogen pumps (EHPs). Using a blend of phosphonic acid and perfluorosulfonic acid ionomers as the electrode binder, an EHP was operated at 5 A cm −2 .
Topics & Concepts
Sulfonic acidIonomerElectrochemistryMaterials scienceOhmic contactElectrodeMass transferHydrogenInorganic chemistryConductivityReversible hydrogen electrodeChemical engineeringChemistryReference electrodePolymer chemistryComposite materialOrganic chemistryChromatographyPolymerPhysical chemistryEngineeringCopolymerFuel Cells and Related MaterialsAdvanced battery technologies researchAdvancements in Solid Oxide Fuel Cells