01784nas a2200241   4500008004100000022001400041245010000055210006900155260012900224300001200353490000600365520087700371653003301248653002601281653000901307100001801316700001601334700001401350700001601364700001501380700001601395856013101411       2006                        eng d  a1550-624X00aAnalysis of single PEM fuel cell performances based on current density distribution measurement0 aAnalysis of single PEM fuel cell performances based on current d  aTHREE PARK AVE, NEW YORK, NY 10016-5990 USAbUniv Perugia; Italian Agcy New Technol & Environm; Amer Soc Mech EngineerscAUG  a351-3570 v33 a<p>A new in situ measurement method of mapping the current density distribution in polymer electrolyte fuel cells (PEFC) is used to analyze the performance of a fuel cell under different operating conditions. The present method is useful in investigating the current density distribution in a single cell as well as a stack, which carries the information about the local reactant activity over the electrode area It was found that the current density close to the gas inlets is strongly influenced by the reactants' relative humidity. The performance close to the gas outlets is greatly influenced by the inlet gas pressures and the stoichiometry factors of the reactant gases, mainly on the cathode side. It was also observed that the performance of the fuel cell drops with the increase in operating temperature if the reactant gases are not sufficiently humidified.</p>10acurrent density distribution10afuel cell performance10aPEFC1 aGhosh, P., C.1 aWuester, T.1 aDohle, H.1 aKimiaie, N.1 aMergel, J.1 aStolten, D.  uhttps://library.ncl.res.in/content/analysis-single-pem-fuel-cell-performances-based-current-density-distribution-measurement-0