전기화학회지 (Journal of the Korean Electrochemical Society)

  • 제27권2호
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  • Pages.73-79
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  • 2024
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  • 1229-1935(pISSN)
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  • 2288-9000(eISSN)
한국전기화학회 (The Korean Electrochemical Society)
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리튬 이온 전지용 음극으로서의 Si@C/rGO의 합성

Si@C/rGO Composite Anode Material for Lithium Ion Batteries

  • 김채현 (순천향대학교 에너지공학과) ;
  • 김성훈 (순천향대학교 에너지공학과) ;
  • 안욱 (순천향대학교 에너지공학과)
  • Chaehyun Kim (Department of Energy Engineering, Soon Chun Hyang University) ;
  • Sung Hoon Kim (Department of Energy Engineering, Soon Chun Hyang University) ;
  • Wook Ahn (Department of Energy Engineering, Soon Chun Hyang University)
  • 투고 : 2024.03.20
  • 심사 : 2024.04.12
  • 발행 : 2024.05.31
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초록

화석 연료의 사용이 증가함에 따라 이산화탄소와 같은 온실 가스의 배출량이 함께 증가하며 발생하는 환경 문제의 해결을 위해 이차전지와 같은 친환경 에너지 저장 기술이 주목받고 있다. 리튬 이온 전지의 중대형 전지를 제작하기 위해서는 고용량과 고효율 뿐만 아니라 우수한 안정성을 지니는 배터리의 전극 소재의 개발이 필수적이다. 이를 위해 고분자의 합성을 토대로 고용량을 얻을 수 있는 실리콘과 합성한 후 reduced Graphene Oxide (rGO)를 첨가하여 전극 활 물질을 제조해 물리적 특성과 전기화학적 성능을 분석하였다. 제조한 전극은 실리콘에 고분자를 탄화시켜 코팅하고 기계적 강도와 높은 안정성을 보이는 rGO를 첨가해 실리콘에 탄소를 코팅하는 Si@C 복합체에 비해 개선된 용량과 향상된 안정성을 보이는 것을 확인했다.

As the use of fossil fuels has gradually increased, so has the emission of greenhouse gases such as carbon dioxide, leading to environmental problems. As a result, lithium-ion batteries (LiB) have emerged as the solution to this issue. To manufacture medium to large-sized lithium-ion batteries (LiB), it requires electrodes with high capacity and fast charging capabilities. Silicon (Si) is considered a next-generation anode with high-capacity properties, so, reduced graphene oxide (rGO) was compounded with Si@resorcinol-formaldehyde resin (RF) composite to prevent the volume expansion of Si. It was confirmed that the composite anode prepared exhibited improved capacity and enhanced stability.

키워드

과제정보

This result was supported by "Regional Innovation Strategy (RIS)" through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (MOE) (2021RIS-004), and also supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (NRF-2020R1C1C1010493).

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