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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Hydrogenation Properties on MgHx-Sc2O3 Composites by Mechanical Alloying

MgHx-Sc2O3 복합재료의 수소화 특성

  • Kim, Kyeong-Il (Department of Materials Science and Engineering/Research Center for Sustainable ECo-Devicesand Materials (ReSEM), Chungju National University) ;
  • Kim, Yong-Sung (Graduate school of NID Fusion Technology, Seoul National University of Technology) ;
  • Hong, Tae-Whan (Department of Materials Science and Engineering/Research Center for Sustainable ECo-Devicesand Materials (ReSEM), Chungju National University)
  • 김경일 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터) ;
  • 김용성 (서울산업대학교 NID융합기술대학원) ;
  • 홍태환 (충주대학교 신소재공학과/친환경 에너지 변환.저장소재 및 부품개발 연구센터)
  • Received : 2010.03.09
  • Accepted : 2010.04.20
  • Published : 2010.04.30
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Abstract

Hydrogen energy applications have recognized clean materials and high energy carrier. Accordingly, Hydrogen energy applies for fuel cell by Mg and Mg-based materials. Mg and Mg-based materials are lightweight and low cost materials with high hydrogen storage capacity. However, commercial applications of the Mg hydride are currently hinder by its high absorption/desorption temperature, and very slow reaction kinetics. Therefore one of the most methods to improve kinetics focused on addition transition metal oxide. Addition to transition metal oxide in $MgH_x$ powder produce $MgH_x$-metal oxide composition by mechanical alloy and it analyze XRD, EDS, TG/DSC, SEM, and PCT. This report considers kinetics by transition metal oxide rate and Hydrogen pressure. In this research, we can see behavior of hydriding/dehydriding profiles by addition catalyst (transition metal oxide). Results of PCI make a excellent showing $MgH_x$-5wt.% Sc2O3 at 623K, $MgH_x$-10wt.% $Sc_2O_3$ at 573K.

Keywords

References

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