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

  • 제31권1호
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  • Pages.132-137
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  • 2020
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  • 1738-7264(pISSN)
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  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
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그래핀 2wt%를 첨가한 Li1.6Ni0.35Mn0.65O2 Half-Cell의 물질 전 과정 평가

Material Life Cycle Assessment of Graphene 2wt% Added to Li1.6Ni0.35Mn0.65O2 Half-Cell

  • 조경원 (한국교통대학교 공동실험실습관) ;
  • 이영환 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 한정흠 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 유제선 (한국교통대학교 화공신소재고분자공학부 신소재공학전공) ;
  • 홍태환 (한국교통대학교 화공신소재고분자공학부 신소재공학전공)
  • CHO, KYOUNG-WON (Center for Research Facilities, Korea National University of Transportation) ;
  • LEE, YOUNG-HWAN (Department of Advanced Materials Science & Engineering, Korea National University of Transportation) ;
  • HAN, JEONG-HEUM (Department of Advanced Materials Science & Engineering, Korea National University of Transportation) ;
  • YU, JAE-SEON (Department of Advanced Materials Science & Engineering, Korea National University of Transportation) ;
  • HONG, TAE-WHAN (Department of Advanced Materials Science & Engineering, Korea National University of Transportation)
  • 투고 : 2019.08.20
  • 심사 : 2020.02.28
  • 발행 : 2020.02.28
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초록

Lithium secondary batteries have become an important power source for portable electronic devices such as cellular phones, laptop computers. Presently, commercialized lithium-ion batteries use a LiCoO2 cathode. However, due to the high cost and environmental problems resulting from cobalt, an intensive search for new electrode materials is being actively conducted. Recently, solid solution LiMn1-xNixO2 have become attractive because of high capacity and enhanced safety at high voltages over 4.5 V. The Li1.6Ni0.35Mn0.65O2 compounds were conventionally prepared by a sol-gel method, which can produce the layered Li-Ni-Mn-O compounds with a high homogeneity. And by adding a graphene 2wt% the first charge-discharge voltage profiles was increased over Li1.6Ni0.35Mn0.65O2 compound. Also, the variation s of the discharge capacities with cycling showed a higher capacity retention rater. In this study, material lifecycle evaluation was performed to analyze the environmental impact characteristics of Li1.6Ni0.35Mn0.65O2 & graphene 2wt% half-cell manufacturing process. The software of material life cycle assessment was Gabi. Through this, environmental impact assessment was performed for each process. The environmental loads induced by Li1.6Ni0.35Mn0.65O2 & graphene 2wt% synthesis process were quantified and analyzed, and the results showed that the amount of power had the greatest impact on the environment.

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