15.30 Darlene Pudolin - CAPLINQ.pdf

1、Advanced Thermal Management Strategiesfor PEM Fuel Cells using Phase Change MaterialsDarlene Pudolin,CAPLINQ Corporation35 December 2024|Stuttgart,GermanyFuel CellsIntroduction2Electrochemical device that generates electricity without combustionby combining hydrogen and oxygen in an electrochemical

2、reaction,producing only water and heat as by-products.Fuel cells power a range of applications today,from homes and critical facilities to vehicles like cars,buses,and trains,offering a clean,efficient energy source.Fuel CellBackup PowerPrime Power for Critical LoadsSpecialty VehiclesTransportationG

3、enerated by the release of latent heat during water vapor condensationHeat Generation in Fuel CellsIntroductionChemical energy that is not converted into electricity is released as heatElectrodes due to electrochemical reactionsGas diffusion electrodes due to water condensationMembrane due to proton

4、ic resistanceHeat in the membrane is generated due to protonic resistance,as ion movement encounters resistanceMembraneelectrode interface due to water sorptionWater sorption maintains ionic conductivity and ion transport,generating heat due to the enthalpy of absorption.3Catalyst layer and GDL degr

5、adationthrough dissolution,agglomeration,detachment,and Ostwald ripening,with carbon support corrosion adding to these issues.Higher temperatures increase these degradation rates.Membrane dehydrationincreases the risk of physical damage,such as cracking or pin-hole formation.High temperatures can in

6、crease ohmic losses.Ionomers can degrade too.High-temperature operation and localized hot spot formation are two major sources of material degradation.Thermal Management Strategies in PEM Fuel CellsIntroduction4Heat/thermal management of the PEMFC is normally achieved via employing a suitable coolin