...Adam S. Hollinger; Stefan T. Thynell Localized temperature gradients in a polymer electrolyte fuel cell (PEFC) are known to decrease the durability of the polymer membrane. The most important factor in controlling these temperature gradients is the thermal contact resistance at the interface...

... July 7, 2013; published online September 13, 2013. Editor: Nigel M. Sammes. 05 05 2013 07 07 2013 Portable and motive applications of open-cathode polymer electrolyte fuel cells (PEFCs) require not only good stack performance but also a light and compact design. In this context, we...

... , “ Improvement in the Diffusion Characteristics of Low Pt-Loaded Electrodes for PEFCs ,” J. Appl. Electrochem. 0021-891X , 29 , pp. 445 – 448 . 10.1023/A:1026419102310 Giorgi , L. , Antolini , E. , Pozio , A. , and Passalacqua , E. , 1998 , “ Influence of the PTFE Content...

... system is analyzed to properly address the influence of operating conditions on power density and flooding via a comprehensive parametric analysis. 07 03 2008 13 06 2008 05 03 2009 computational fluid dynamics proton exchange membrane fuel cells fuel cell design PEFC CFD...

... measurement Maxwell equations tomography fuel cell DMFC PEFC MEA tomography current density distribution magnetic field measurement Fuel cells have been known for a long time ( 1 2 3 4 ). Their principal advantage is the direct conversion of chemical into electric energy thus avoiding...

...Stefano Cordiner; Vincenzo Mulone; Fabio Romanelli The use of proton exchange membrane fuel cells (PEFC) based power trains and stationary systems has been technically demonstrated but is still far from commercial application. Technical development is still required to reach cost and durability...

... cells (PEFCs) for residential applications. The model is able to simulate velocity profiles in order to investigate the reactor geometrical key parameters. The unit can convert light hydrocarbons (methane, propane, LPG, butane) into a hydrogen rich mixture. The processing unit consists of an innovative...

... the steady-state as well as the dynamic operation of the system with sufficient accuracy, although considerable simplifications have been made for the stack and the peripheral components to keep model complexity and computing time low. Emphasis is given to the operation limits of the PEFC system, notably...

...P. C. Ghosh; T. Wüster; H. Dohle; N. Kimiaie; J. Mergel; D. Stolten 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...