Abstract

Materials based on pyrolyzed electrospun nanofiber polyacrylonitrile were studied by the method of standard contact porosimetry. An influence of oxidation and pyrolysis temperatures on specific surface area. It was shown that an increase of oxidation temperature from 300 to 350°C and of pyrolysis temperature from 900 to 1000°C leads to a decrease of pore specific surface area and to a decrease of a part of micropore specific surface area. Platinated samples showed sufficient values of electrochemically active platinum surface area (12‒35 m² g\(_{{{\text{Pt}}}}^{{ - 1}}\)) and were tested as cathodes for high temperature polymer electrolyte membrane fuel cell. An increase in power density was found when a part of electrode micropore specific surface area was decreasing.

中文翻译：

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稳定和碳化温度对聚苯并咪唑膜上燃料电池微孔碳纳米纤维阴极性能的影响

摘要

通过标准接触孔隙率法研究了基于热解电纺纳米纤维聚丙烯腈的材料。氧化和热解温度对比表面积的影响。结果表明，氧化温度从300℃增加到350℃，热解温度从900℃增加到1000℃导致孔隙比表面积的减小和部分微孔比表面积的减小。镀铂样品显示出足够的电化学活性铂表面积（12‒35 m ²  g \（_ {{{text {Pt}}}} ^ {{{-1}} \）），并已作为高温阴极进行了测试聚合物电解质膜燃料电池。当一部分电极微孔比表面积减小时，发现功率密度增加。