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      https://www.ias.ac.in/article/fulltext/boms/036/04/0661-0666

    • Keywords

       

      Hydrogen absorbing materials; magnesium; reactive mechanical grinding; scanning electron microscopy; X-ray diffraction.

    • Abstract

       

      The magnesium prepared by mechanical grinding under H2 (reactive mechanical grinding) with transition elements or oxides showed relatively high hydriding and dehydriding rates when the content of additives was about 20 wt%. Ni (expected to increase hydriding and dehydriding rates) was chosen as transition element to be added. Fe2O3 (expected to increase hydriding rate) was selected as an oxide to be added. Ti was also selected since, it was considered to increase the hydriding and dehydriding rates by forming Ti hydride. A sample, Mg–14Ni–3Fe2O3–3Ti, was prepared by reactive mechanical grinding and its hydrogen storage properties were investigated. This sample absorbed 4.02 wt% H for 5 min, 4.15 wt% H for 10 min and 4.42 wt% H for 60 min at 𝑛 = 2. It desorbed 2.46 wt% H for 10 min, 3.98 wt% H for 30 min and 4.20 wt% H for 60 min at 𝑛 = 2.

    • Author Affiliations

       

      Myoung Youp Song1 Young Jun Kwak2 Hye Ryoung Park3 Byoung-Goan Kim4

      1. Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Center, Engineering Research Institute, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea
      2. Department of Materials Engineering, Graduate School, Chonbuk National University, 664-14 Deokjin-Dong 1Ga Deokjin-Gu Jeonju Jeonbuk, 561-756, South Korea
      3. School of Applied Chemical Engineering, Chonnam National University, 300 Yongbong-Dong Buk-Gu Gwangju, 500-757, South Korea
      4. Korea Energy Materials Limited, 409 Daegu Technopark, 1-11 Hosan-Dong Dalse-Gu Daegu, 704-230, South Korea
    • Dates

       
  • Bulletin of Materials Science | News

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