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- W2034002601 abstract "Abstract Development of low temperature fuel cells that operate under 100 °C are needed to reduce the costs, to design a class of hybrid membranes and to construct various structures of membrane-electrode-assembles (MEAs) for proton exchange membrane fuel cells (PEMFC). In this work, PVA/PMA/SiO 2 hybrid composite membranes were synthesized and their conductivities were determined by impedance measurements. We found a maximum conductivity value of 4.2 × 10 −3 S/cm at 80 °C and 100% relative humidity (RH). A fuel cell test evaluation for various MEAs was conducted by the potentiodynamic analysis and the current density values were determined from the current–voltage (I–V) curves. A maximum current density of 635 mA/cm 2 was obtained at 80 °C and 100% RH. To the best of our knowledge, this is the first time that a high current density of PVA-based electrolytes for PEMFCs operating at low temperature is reported. The structural characters were examined using of XRD and FTIR methods, and thermal properties were studied using DSC and TGA techniques and the results were discussed (cf. supplementation ). The present study revealed that the single cell performance depends mainly on the temperature, relative humidity and chemical compositions of the membranes." @default.
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- W2034002601 date "2012-11-01" @default.
- W2034002601 modified "2023-09-26" @default.
- W2034002601 title "Development of non-perfluorinated hybrid materials for single-cell proton exchange membrane fuel cells" @default.
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- W2034002601 doi "https://doi.org/10.1016/j.ijhydene.2012.08.082" @default.
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