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Investigation of the thermodynamic and kinetic properties of La-Fe-B system hydrogen-storage alloys

机译:La-Fe-B系储氢合金的热力学和动力学性质研究

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摘要

La-Fe-B hydrogen-storage alloys were prepared using a vacuum induction-quenching furnace with a rotating copper wheel. The thermodynamic and kinetic properties of the La-Fe-B hydrogen-storage alloys were investigated in this work. The P-C-I curves of the La-Fe-B alloys were measured over a H_2 pressure range of 10 ~3 MPa to 2.0 MPa at temperatures of 313, 328, 343 and 353 K. The P-C-I curves revealed that the maximum hydrogen-storage capacity of the alloys exceeded 1.23 wt% at a pressure of approximately 1.0 MPa and temperature of 313 K. The standard enthalpy of formation AH and standard entropy of formation AS for the alloys' hydrides, obtained according to the van't Hoff equation, were consistent with their application as anode materials in alkaline media. The alloys also exhibited good absorption/desorption kinetics at room temperature.
机译:使用带旋转铜轮的真空感应淬火炉制备La-Fe-B氢存储合金。在这项工作中研究了La-Fe-B储氢合金的热力学和动力学性质。在313、328、343和353 K的温度下,在10〜3 MPa至2.0 MPa的H_2压力范围内测量了La-Fe-B合金的PCI曲线。PCI曲线显示最大的储氢能力为合金在约1.0 MPa的压力和313 K的温度下超过1.23 wt%。根据van't Hoff方程获得的合金氢化物的标准形成焓AH和标准形成熵AS与它们在碱性介质中用作阳极材料。该合金在室温下还表现出良好的吸收/解吸动力学。

著录项

  • 来源
    《International journal of hydrogen energy》 |2014年第8期|3805-3809|共5页
  • 作者单位

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China;

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China;

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China;

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China;

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China;

    Baotou Research Institute of Rare Earths, Baotou 014030, PR China,National Engineering Research Center of Rare Earth Metallurgy and Functional Materials, Baotou 014030, PR China,Corresponding author. Baotou Research Institute of Rare Earths, No. 36, Huanghe Street, Rare Earth Development Zone, Baotou 014030, 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

    Hydrogen-storage alloy; La-Fe-B alloy; P-C-I curves; Thermodynamics; Kinetics;

    机译:储氢合金La-Fe-B合金;P-C-I曲线;热力学;动力学;
  • 入库时间 2022-08-18 00:24:00

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