Abstract
The formation regularities and quantitative porosity characteristics of nanofibrous electrospun composite materials based on polyacrylonitrile and its mixtures with polyvinylpyrrolidone and commercially available Vulcan® XC72 or Ketjenblack® EC-600 carbon blacks were studied by standard contact porosimetry. It was shown that a significant increase in the total specific surface area could be achieved due to an increase in the temperature of oxidative warming up of mats from 250 to 330°C followed by vacuum pyrolysis at 900–1000°C. Such carbon materials, after deposition of nanocrystalline platinum onto them, can be used as gas-diffusion electrodes in an intermediate temperature hydrogen–air fuel cell on a polybenzimidazole membrane.
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ACKNOWLEDGMENTS
This work was financially supported by the Russian Foundation for Basic Research, project no. 14-29-04011_ofi_m. Elemental analysis was performed at the Center for Molecular Structure of the Institute of Organoelement Compounds of the Russian Academy of Sciences.
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Vol’fkovich, Y.M., Ponomarev, I.I., Sosenkin, V.E. et al. A Porous Structure of Nanofiber Electrospun Polyacrylonitrile-Based Materials: a Standard Contact Porosimetry Study. Prot Met Phys Chem Surf 55, 195–202 (2019). https://doi.org/10.1134/S2070205119010258
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DOI: https://doi.org/10.1134/S2070205119010258