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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Material Life Cycle Assessments on Mg2NiHx-CaO Composites

Mg2NiHx-CaO 수소 저장 복합물질의 물질 전과정 평가

  • HWANG, JUNE-HYEON (Department of Energy Materials and Engineering, Korea National University of Transportation) ;
  • SHIN, HYO-WON (Department of Energy Materials and Engineering, Korea National University of Transportation) ;
  • HONG, TAE-WHAN (Department of Energy Materials and Engineering, Korea National University of Transportation)
  • 황준현 (한국교통대학교 응용화학에너지공학부 에너지소재공학전공) ;
  • 신효원 (한국교통대학교 응용화학에너지공학부 에너지소재공학전공) ;
  • 홍태환 (한국교통대학교 응용화학에너지공학부 에너지소재공학전공)
  • Received : 2021.12.28
  • Accepted : 2022.02.15
  • Published : 2022.02.28
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Abstract

With rapid industrialization and population growth, fossil fuel use has increased, which has a significant impact on the environment. Hydrogen does not cause contamination in the energy production process, so it seems to be a solution, but it is essential to find an appropriate storage method due to its low efficiency. In this study, Mg-based alloys capable of ensuring safety and high volume and hydrogen storage density per weight was studied, and Mg2NiHx synthesized with Ni capable of improving hydrogenation kinetics. In addition, in order to improve thermal stability, a hydrogen storage composite material synthesized with CaO was synthesized to analyze the change in hydrogenation reaction. In order to analyze the changes in the metallurgical properties of the materials through the process, XRD, SEM, BET, etc. were conducted, and hydrogenation behavior was confirmed by TGA and hydrogenation kinetics analysis. In addition, in order to evaluate the impact of the process on the environment, the environmental impact was evaluated through "Material Life Cycle Assessments" based on CML 2001 and EI99' methodologies, and compared and analyzed with previous studies. As a result, the synthesis of CaO caused additional power consumption, which had a significant impact on global warming, and further research is required to improve this.

Keywords

Acknowledgement

본 연구는 정부(과학기술정보통신부)의 재원으로 한국연구재단의 지원을 받아 수행된 연구(2019R1F1A1041405)와 교육부에서 지원하는 한국 기초과학연구원보조금(2019R1A6C1010047)과 중소벤처기업부가 부여한 재원(S3045542)에 의해 수행되었으며, 이에 감사드립니다

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