Comparison of hydrogen storage properties of pure Mg and milled pure Mg

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• 作者：Myoung Youp Song (1)
  Young Jun Kwak (2)
  Seong Ho Lee (2)
  Hye Ryoung Park (3)
  
• 关键词：Hydrogen absorbing materials ; pure magnesium ; mechanical alloying/milling ; microstructure ; X ; ray diffraction
• 刊名：Bulletin of Materials Science
• 出版年：2014
• 出版时间：June 2014
• 年：2014
• 卷：37
• 期：4
• 页码：831-835
• 全文大小：825 KB
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• 作者单位：Myoung Youp Song (1)
  Young Jun Kwak (2)
  Seong Ho Lee (2)
  Hye Ryoung Park (3)
  
  1. Division of Advanced Materials Engineering, Hydrogen & Fuel Cell Research Centre, Engineering Research Institute, Chonbuk National University, 567 Baekje-daero Deokjin-gu Jeonju, 561-756, South Korea
  2. Department of Materials Engineering, Graduate School, Chonbuk National University, 567 Baekje-daero Deokjin-gu Jeonju, 561-756, South Korea
  3. School of Applied Chemical Engineering, Chonnam National University, 77 Yongbong-ro Buk-gu Gwangju, 500-757, South Korea
  
• ISSN：0973-7669

文摘

Hydrogen storage properties of pure Mg were studied at 593 K under 12 bar H2. In order to increase the hydriding and dehydriding rates, pure Mg was ground under hydrogen atmosphere (reactive mechanical grinding, RMG) and its hydrogen storage properties were subsequently investigated. Pure Mg absorbed hydrogen very slowly. At the number of cycles (n) of 1, pure Mg absorbed 0.05 wt% H for 5 min, 0.08 wt% H for 10 min and 0.29 wt% H for 60 min at 593 K under 12 bar H2. Activation was completed at the fifth cycle. At n = 6, pure Mg absorbed 1.76 wt% H for 5 min, 2.17 wt% H for 10 min and 3.40 wt% H for 60 min. The activation of pure Mg after RMG was completed at the sixth cycle. At n = 7, pure Mg after RMG absorbed 2.57 wt% H for 5 min, 3.21 wt% H for 10 min and 4.15 wt% H for 60 min.