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Dual-tuning effect of In on the thermodynamic and kinetic properties of Mg_2Ni dehydrogenation

机译：In对Mg_2Ni脱氢热力学和动力学性质的双重调节作用

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摘要

Mg_2In_(0.1)Ni solid solution with an Mg_2Ni-type structure has been synthesized and its hydrogen storage properties have been investigated. The results showed that the introduction of In into Mg_2Ni not only significantly improved the dehydrogenation kinetics but also greatly lowered the thermodynamic stability. The dehydrogenation activation energy (E_a) and enthalpy change (△H) decreased from 80 kJ/mol and 64.5 kJ/mol H_2 to 28.9 kJ/mol and 38.4 kJ/mol H_2, respectively. The obtained results point to a method for improving not only the thermodynamic but also the kinetic properties of hydrogen storage materials.
机译：合成了具有Mg_2Ni型结构的Mg_2In_（0.1）Ni固溶体，研究了其储氢性能。结果表明，将In引入到Mg_2Ni中不仅显着提高了脱氢动力学，而且大大降低了热力学稳定性。脱氢活化能（E_a）和焓变（△H）分别从80 kJ / mol和64.5 kJ / mol H_2降低到28.9 kJ / mol和38.4 kJ / mol H_2。所获得的结果指向不仅改善储氢材料的热力学而且改善其动力学性质的方法。

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  • 来源
    《International journal of hydrogen energy》 |2013年第21期|8881-8887|共7页
  • 作者

    L.Z. Ouyang; Z.J. Cao; H. Wang; J.W. Liu; D.L. Sun; Q.A. Zhang; M. Zhu;

  • 作者单位

    School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    Department of Materials Science, Fudan University, Shanghai 200433, People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    School of Materials Science and Engineering, Anhui University of Technology, Maanshan, Anhui 243002,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of China;

    School of Materials Science and Engineering, South China University of Technology, Guangzhou 510641,People's Republic of China,Key Laboratory of Advanced Energy Storage Materials of Guangdong Province,South China University of Technology, Guangzhou 510641, People's Republic of 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; Magnesium alloys; Thermodynamics; Kinetics;

    机译：储氢;镁合金;热力学;运动学;

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