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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Heat Transfer Characteristics and Hydrogen Storage Kinetics of Metal Hydride-Expended Graphite Composite

금속수소화물-팽창흑연 복합체의 열전달 특성 및 수소 저장 특성

  • 이평종 (한국에너지기술연구원) ;
  • 김종원 (한국에너지기술연구원) ;
  • 배기광 (한국에너지기술연구원) ;
  • 정성욱 (한국에너지기술연구원) ;
  • 강경수 (한국에너지기술연구원) ;
  • 정광진 (한국에너지기술연구원) ;
  • 박주식 (한국에너지기술연구원) ;
  • 김영호 (충남대학교 응용화학공학과)
  • Received : 2020.10.23
  • Accepted : 2020.12.30
  • Published : 2020.12.30
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Abstract

Metal hydride is suitable for safe storage of hydrogen. The hydrogen storage kinetics of the metal hydride are highly dependent on its heat transfer characteristics. This study presents a metal hydride-expended graphite composite with improved thermal conductivity and its hydrogen storage kinetics. To improve the heat transfer characteristics, a metal hydride was mixed and compacted with a high thermal conductivity additive. As the hydrogen storage material, AB5 type metal hydride La0.9Ce0.1Ni5 was used. As an additive, flakes-type expended graphite was used. With improved heat transfer characteristics, the metal hydride-expended graphite composite stores hydrogen four times faster than metal hydride powder.

Keywords

References

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