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首页> 外文期刊>International journal of hydrogen energy >Effects of annealing treatment and partial substitution of Gu for Co on phase composition and hydrogen storage performance of La_(0.7)Mg_(0.3)Ni_(3.2)Co_(0.35) alloy
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Effects of annealing treatment and partial substitution of Gu for Co on phase composition and hydrogen storage performance of La_(0.7)Mg_(0.3)Ni_(3.2)Co_(0.35) alloy

机译：退火及钴的局部取代对La_（0.7）Mg_（0.3）Ni_（3.2）Co_（0.35）合金的相组成和储氢性能的影响

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摘要

In this paper, the phase composition, hydrogen absorption/desorption as well as electrochemical characteristics of as-cast and annealed La_(0.7)Mg_(0.3)Ni_(3.2)Co_(0.35-x)Cu_x alloys were investigated by X-ray diffraction (XRD), pressure composition isotherm (PCT) and electrochemical measurements. The results showed that La_2Ni_7 phase and LaNi phase coexisted in the as-cast alloys, but only La_(0.98)Ni_(5.10) phase was detected in the annealed alloys. The maximum and reversible hydrogen storage capacities of the annealed alloys were higher than that of as-cast alloys, with greatly improved plateau performance. The substitution of Cu for Co made the electrochemical discharge capacity of the annealed alloys lower than that of as-cast alloys.
机译：本文通过X射线衍射研究了退火后的La_（0.7）Mg_（0.3）Ni_（3.2）Co_（0.35-x）Cu_x合金的相组成，氢吸收/解吸以及电化学特性。 （XRD），等温压力成分（PCT）和电化学测量。结果表明，铸态合金中La_2Ni_7相和LaNi相共存，而退火合金中仅检测到La_（0.98）Ni_（5.10）相。退火合金的最大储氢能力和可逆储氢能力高于铸态合金，并具有更高的平稳性能。用Cu代替Co使得退火合金的电化学放电容量低于铸态合金的电化学放电容量。

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  • 来源
    《International journal of hydrogen energy》 |2012年第1期|p.1074-1079|共6页
  • 作者

    Taizhong Huang; Xianxia Yuan; Jiemei Yu; Zhu Wu; Jitian Han; Guoxin Sun; Naixin Xu; Yihe Zhang;

  • 作者单位

    Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering,University of Jinan, Shandong 250022, China,School of Energy and Power Engineering, South Campus, Shandong University, Jinan, Shandong 250061, China,National Laboratory of Mineral Materials, School of Material Science and Technology, University of Geosciences, Beijing 100083, China;

    Department of Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;

    Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering,University of Jinan, Shandong 250022, China;

    Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;

    School of Energy and Power Engineering, South Campus, Shandong University, Jinan, Shandong 250061, China;

    Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering,University of Jinan, Shandong 250022, China;

    Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;

    Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, School of Chemistry and Chemical Engineering,University of Jinan, Shandong 250022, China,National Laboratory of Mineral Materials, School of Material Science and Technology, University of Geosciences, Beijing 100083, 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 alloys; PCT; XRD; electrochemical discharge capacity;

    机译：储氢合金PCT;XRD;电化学放电容量;

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