Nishanth-Echnological barriers in PEM fuel cell system development

May 5th, 2015
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Outline of presentation • Brief Introduction to PEM Fuel cells • PEM Fuel cell system • PEM Fuel cell technological barriers • Fuel cell R&D at SPIC Science Foundation

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Nishanthechnological barriers in PEM fuel cell system developmentDr. G. Sasi kumarCentre for Energy Research SPIC Science Foundation, Tamil NaduOutline of presentation Brief Introduction to PEM Fuel cells PEM Fuel cell system PEM Fuel cell technological barriers Fuel cell R&D at SPIC Science FoundationPEM Fuel cellsWide range of applicationsPEM Fuel CellH2 + O2-----H2O + electricity (+ heat )PEM Fuel Cell - Major ComponentsElectrode Pt catalyst used Membrane- NAFION most commonly used Bipolar plate- GraphiteMembrane and Electrode assembly (MEA)PEM Fuel cell stackComponents of Fuel cell system ( fuel cell power plant)Fuel cell stack & accessories Gas humidifier Gas feed system Stack cooling system Oxygen/air supply system Fuel / Fuel processor Power conditioner Control & monitoring systemSchematic of Fuel Cell systemSchematic of Fuel cell systemTechnological barriers Challenges in PEM Fuel cellsPEM fuel cell membraneDesirable features of PEM membrane Good proton conductivity Zero electronic conductivity Low gas permeability Chemical & electrochemical stability High mechanical strength Membranes for PEM fuel cell -Perfluorosulfonic acid (PFSA) membranesNafion Membrane (Du Pont, USA ) Dow membrane Asahi membrane Gore membrane -Aromatic sulphonic acid membranes sulfonated poly(sulfones) sulfonated poly (ether ketones) sulfonated poly( trifluorostyrenes)

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