Characterization of proton exchange membrane fuel cell and PEM electrolyzer using non-steady electrochemical techniques.

dc.contributor.advisor Colucci-Ríos, José López-de Jesús, Yaritza M. College of Engineering en_US
dc.contributor.committee Briano, Julio G.
dc.contributor.committee Portnoy, Arturo
dc.contributor.department Department of Chemical Engineering en_US
dc.contributor.representative Vega, Carmen 2018-05-16T16:56:23Z 2018-05-16T16:56:23Z 2004
dc.description.abstract Proton Exchange Membrane Fuel Cells (PEMFCs) and PEM Electrolyzer were characterized using Electrochemical Impedance Spectroscopy (EIS). Faradaic resistance (RΩ), kinetic and mass transfer parameters such as charge transfer resistance, double layer capacitance and diffusion coefficient from Warburg’s theory were obtained. The PEM electrolyzer and PEM fuel cell use perfluorocarbon sulfonic acid (PFSA) ionomer (Nafion™) as the electrolyte. The PEMFC showed more performance losses than the PEM Electrolyzer, these losses were corroborated with Warburg’s theory. The PEMFC exhibited performance losses related with mass transfer. Two PEMFCs with different catalyst loading, 0.1 and 0.3mgPt/cm2 , were compared respectively, and the memory effects were analyzed. The PEMFC with 0.3mgPt/cm2 presented better properties and less performances losses than the PEMFC with 0.1mgPt/cm2 . The memory effects of both PEMFCs were found to be related to the water content and management in the cells. This phenomenon was more evident at low applied potentials. en_US
dc.description.graduationYear 2004 en_US
dc.language.iso en en_US
dc.rights.holder (c) 2004 Yaritza M. López de Jesús en_US
dc.rights.license All rights reserved en_US
dc.subject Proton exchange membrane fuel cells (PEMFCs) en_US
dc.subject Electrochemical impedance spectroscopy (EIS) en_US
dc.subject.lcsh Fuel cells. en_US
dc.subject.lcsh Hydrogen as fuel. en_US
dc.subject.lcsh Ion permeable membranes. en_US
dc.subject.lcsh Electrochemistry. en_US
dc.subject.lcsh Proton exchange membrane fuel cells. en_US
dc.title Characterization of proton exchange membrane fuel cell and PEM electrolyzer using non-steady electrochemical techniques. en_US
dc.type Thesis en_US
dspace.entity.type Publication Chemical Engineering en_US M.S. en_US
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