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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Investigation of Thermal Management Parameters of Metal Hydride Based Hydrogen Storage System

금속수소화물 기반 수소저장시스템의 열관리 인자 조사

  • PARK, CHU SIK (Hydrogen Laboratory, New & Renewable Energy Department, Korea Institute of Energy Research) ;
  • KIM, JONG WON (Hydrogen Laboratory, New & Renewable Energy Department, Korea Institute of Energy Research) ;
  • BAE, KI KWANG (Hydrogen Laboratory, New & Renewable Energy Department, Korea Institute of Energy Research) ;
  • JEONG, SEONG UK (Hydrogen Laboratory, New & Renewable Energy Department, Korea Institute of Energy Research) ;
  • KANG, KYOUNG SOO (Hydrogen Laboratory, New & Renewable Energy Department, Korea Institute of Energy Research)
  • 박주식 (한국에너지기술연구원 신재생에너지연구소 수소연구실) ;
  • 김종원 (한국에너지기술연구원 신재생에너지연구소 수소연구실) ;
  • 배기광 (한국에너지기술연구원 신재생에너지연구소 수소연구실) ;
  • 정성욱 (한국에너지기술연구원 신재생에너지연구소 수소연구실) ;
  • 강경수 (한국에너지기술연구원 신재생에너지연구소 수소연구실)
  • Received : 2018.04.24
  • Accepted : 2018.06.30
  • Published : 2018.06.30
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Abstract

Metal hydride based hydrogen storage under moderate temperature and pressure gives the safety advantage over the gas and liquid storage methods. Still solid-state hydrogen storage including metal hydride is below the DOE target level for automotive applications, but it can be adapted to stationary or miliary application reasonably. In order to develop a modular solid state hydrogen storage system that can be applied to a distributed power supply system composed of renewable energy - water electrolysis - fuel cell, the heat transfer and hydrogen storage characteristics of the metal hydride necessary for the module system design were investigated using AB5 type metal hydride, LCN2 ($La_{0.9}Ce_{0.1}Ni_5$). The planetary high energy mill (PHEM) treatment of LCN2 confirmed the initial hydrogen storage activation and hydrogen storage capacity through surface modification of LCN2 material. Expanded natural graphite (ENG) addition to LCN2, and compression molding at 500 atm improved the thermal conductivity of the solid hydrogen storage material.

Keywords

References

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