Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Hydrogen Absorption and Desorption Characteristics of Microencapsulated Hydrogen Storage Alloy Powders and Their Compacts

마이크로 캡슐화한 수소저장합금 분말 및 그 성형체의 수소흡수·방출 특성

  • Kim, Chan Jung (Department of Metallurgical Engineering Kyungpook National University) ;
  • Choi, Byung Jin (Department of Metallurgical Engineering Kyungpook National University) ;
  • Kim, Dai Ryong (Department of Metallurgical Engineering Kyungpook National University)
  • 김찬중 (경북대학교 공과대학 금속공학과) ;
  • 최병진 (경북대학교 공과대학 금속공학과) ;
  • 김대룡 (경북대학교 공과대학 금속공학과)
  • Published : 1993.06.30
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Abstract

The hydrogen absorption and desorption characteristics of microencapsulated (CFM)$Ni_{4.7}Al_{0.2}Fe_{0.1}$ and $MmNi_4Fe$ powder with Ni and/or Cu by means of chemical plating method have been investigated. Initial hydrogen absorption rate and activation property were increased remarkably by encapsulation and subsequent compacting. Pellets abtained by compacting of Cu-encapsulated fine powder have fairly good strength even after 30 cycles of hydriding and dehydriding. Encapsulated alloy powder and their compacts show a good resistance to degradation by $O_2$ or CO in hydrogen.

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Acknowledgement

Supported by : 한국과학재단