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首页> 外文期刊>Journal of power sources >Carbon supported Pt-Sn nanoparticles as anode catalyst for direct borohydride-hydrogen peroxide fuel cell: Electrocatalysis and fuel cell performance
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Carbon supported Pt-Sn nanoparticles as anode catalyst for direct borohydride-hydrogen peroxide fuel cell: Electrocatalysis and fuel cell performance

机译：碳载Pt-Sn纳米粒子作为直接氢硼化氢-过氧化氢燃料电池的阳极催化剂：电催化和燃料电池性能

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摘要

Carbon supported Pt-Sn bimetallic nanoparticles (Pt-Sn/C) are prepared by a modified NaBPH_4 reduction method in aqueous solution at room temperature, and used as the anode electrocatalyst for direct borohydride-hydrogen peroxide fuel cell (DBHFC). The physical and electrochemical properties of the as-prepared electrocatalysts are investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV), chronoamperometry (CA) and fuel cell test. XRD results show that the diffraction peaks in Pt-Sn/C catalyst shift slightly to lower 20 values with the increase of Sn content compared with that of Pt/C catalyst, suggesting the formation of Pt-Sn alloying. TEM results show that the morphologies of Pt-Sn bimetallic nanoparticles are uniformly spherical with the particle size of about 3 nm on the carbon surface. Besides, it has been found that the Pt-Sn/C catalysts have much higher catalytic activity for the direct oxidation of BH4 than Pt/C catalyst, especially the Pt_(67)Sn_(33)/C catalyst presents the highest catalytic activity among all as-prepared catalysts. The DBHFC withPt_(67)Sn_(33)/ C anode catalyst and Pt/C cathode catalyst obtains the maximum power density as high as 91.5 mW cm~(-2) at 25 ℃
机译：碳修饰的Pt-Sn双金属纳米粒子（Pt-Sn / C）是通过改良的NaBPH_4还原法在室温下于水溶液中制备的，并用作直接硼氢化物-过氧化氢燃料电池（DBHFC）的阳极电催化剂。通过X射线衍射（XRD），透射电子显微镜（TEM），循环伏安法（CV），计时电流法（CA）和燃料电池测试研究了制备的电催化剂的物理和电化学性质。 XRD结果表明，与Pt / C催化剂相比，随着Sn含量的增加，Pt-Sn / C催化剂的衍射峰略微移至较低的20值，表明形成了Pt-Sn合金。 TEM结果表明，Pt-Sn双金属纳米颗粒的形态为球形，在碳表面的粒径约为3 nm。此外，已发现Pt-Sn / C催化剂对BH4的直接氧化的催化活性比Pt / C催化剂高，尤其是Pt_（67）Sn_（33）/ C催化剂在BH4的直接催化中具有最高的催化活性。所有制备的催化剂。在25℃下，具有Pt_（67）Sn_（33）/ C阳极催化剂和Pt / C阴极催化剂的DBHFC的最大功率密度高达91.5 mW cm〜（-2）。

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  • 来源
    《Journal of power sources》 |2013年第15期|6-12|共7页
  • 作者

    Lanhua Yi; Li Liu; Xingyan Wang; Xue Liu; Wei Yi; Xianyou Wang;

  • 作者单位

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

    Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education, School of Chemistry, Xiangtan University, Xiangtan 4JI105, Hunan Province, PR China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    direct borohydride-hydrogen peroxide fuel; cell; anode electrocatalyst; borohydride oxidation; catalytic activity;

    机译：直接硼氢化物-过氧化氢燃料;细胞;阳极电催化剂硼氢化物氧化催化活性;

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