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首页> 外文会议>Proton exchange membrane fuel cells 9 >High Temperature Operation of Direct Ethanol Fuel Cells with Nafion-TiO_2 Membranes and PtSn/C Electrocatalysts
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High Temperature Operation of Direct Ethanol Fuel Cells with Nafion-TiO_2 Membranes and PtSn/C Electrocatalysts

机译：带有Nafion-TiO_2膜和PtSn / C电催化剂的直接乙醇燃料电池的高温运行

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摘要

In this study, both PtSn/C electrocatalysts and composites electrolytes based on Nafion and mesoporous titania (Nafion-TiO_2) were evaluated in direct ethanol fuel cell operating at 130℃. PtSn/C catalysts with different compositions were prepared by alcohol-reduction process. The electrochemical activity of these electrocatalysts was verified by cyclic voltammetry and chronoamperometry measurements. Cast Nafion-TiO_2 composites were characterized by differential scanning calorimetry and ac impedance spectroscopy. The water uptake of the composites was determined by gravimetry. Membrane electrode assemblies composed by Nafion-TiO_2 electrolyte and PtSn/C anode were evaluate in DEFC operating in 80-130℃ temperature range. Polarization curves showed an enhanced performance (maximum power density of ～50 mW cm~(-2)) for DEFC using combined PtSn/C (60:40) electrocatalyst and Nafion-TiO_2 (10 wt%) operating at 130℃.
机译：在这项研究中，在130℃的直接乙醇燃料电池中评估了基于Nafion和中孔二氧化钛（Nafion-TiO_2）的PtSn / C电催化剂和复合电解质。通过醇还原法制备了不同组成的PtSn / C催化剂。这些电子催化剂的电化学活性通过循环伏安法和计时电流法测量得到证实。用差示扫描量热法和交流阻抗谱对铸Nafion-TiO_2复合材料进行了表征。通过重量分析法测定复合材料的吸水率。在80-130℃温度范围内的DEFC中对由Nafion-TiO_2电解质和PtSn / C阳极组成的膜电极组件进行了评估。极化曲线显示了使用PtSn / C（60:40）组合电催化剂和Nafion-TiO_2（10 wt％）在130℃下运行时，DEFC的性能增强（最大功率密度约为50 mW cm〜（-2））。

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  • 来源
  • 会议地点 Vienna(AT);Vienna(AT);Vienna(AT)
  • 作者

    R.A. Isidoro; B.R. Matos; M.A. Dresch; E.V. Spinace; M. Linardi; E. Traversa; F.C. Fonseca; E.I. Santiago;

  • 作者单位

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    rnInternational Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan;

    rnEnergy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

    Energy and Nuclear Research Institute, 05508-000, Sao Paulo, Brazil;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学电源、电池、燃料电池;
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