유기물자원화 (Journal of the Korea Organic Resources Recycling Association)

  • 제31권3호
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  • Pages.27-34
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  • 2023
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  • 1225-6498(pISSN)
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  • 2508-3015(eISSN)
유기성자원학회 (Korea Organic Resources Recycling Association)
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다양한 바이오매스 기반의 탄소 제조 및 리튬이온전지 음극활물질로의 응용

Synthesis of Various Biomass-derived Carbons and Their Applications as Anode Materials for Lithium Ion Batteries

  • 김찬교 (한밭대학교 화학생명공학과) ;
  • 제갈석 (한밭대학교 화학생명공학과) ;
  • 김하영 (한밭대학교 화학생명공학과) ;
  • 김지원 (한밭대학교 화학생명공학과) ;
  • 추연룡 (한밭대학교 화학생명공학과) ;
  • 심형섭 (세종대학교 항공우주공학과) ;
  • 윤창민 (한밭대학교 화학생명공학과)
  • Chan-Gyo Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Suk Jekal (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Ha-Yeong Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Jiwon Kim (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Yeon-Ryong Chu (Department of Chemical and Biological Engineering, Hanbat National University) ;
  • Hyung Sub Sim (Department of Aerospace Engineering, Sejong University) ;
  • Chang-Min Yoon (Department of Chemical and Biological Engineering, Hanbat National University)
  • 투고 : 2023.08.06
  • 심사 : 2023.08.14
  • 발행 : 2023.09.30
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초록

본 연구에서는 여러 종류의 식물성 바이오매스 폐기물을 리튬이온전지용 음극활물질로 재활용하고자 하였다. 수거한 바이오매스는 세척 및 분쇄 후 질소 환경(850℃)으로 탄화하였으며, 이를 FE-SEM, EDS, FT-IR을 사용하여 물리·화학적 특성을 비교하였다. 바이오매스 기반의 탄소 전구체로 왕겨, 밤껍질, 녹차 티백, 커피 폐기물을 사용했으며, 전구체의 성분에 따라 형태 및 탄소화 정도의 차이가 발생함을 확인하였다. 바이오매스 폐기물로 제조된 탄소를 음극재로 활용하여 전기화학 성능을 비교한 결과 각각 65.8, 80.2, 90.6, 104.7mAh g-1의 방전용량을 나타내었으며, 커피 폐기물을 전구체로 제조한 탄소가 가장 높은 방전용량을 나타내었다. 이는 바이오매스의 원소 조성 및 구성성분 차이로 인해 탄화 정도가 달라지기 때문이다. 최종적으로, 환경오염을 유발하는 다양한 식물성 바이오매스를 탄화를 통해 효과적인 에너지 저장매체로 활용할 수 있는 가능성을 제시하였다.

In this study, various plant-based biomass are recycled into carbon materials to employ as anode materials for lithium-ion batteries. Firstly, various biomass of rice husk, chestnut, tea bag, and coffee ground are collected, washed, and ground. The carbonization process is followed under a nitrogen atmosphere at 850℃. The morphological and chemical properties of materials are investigated using FE-SEM, EDS, and FT-IR to compare the characteristic differences between various biomass. It is noticeable that biomass-derived carbon materials vary in shape and degree of carbonization depending on their precursor materials. These materials are applied as anode materials to measure the electrochemical performance. The specific capacities of rice husk-, chetnut-, tea bag-, and coffee ground-derived carbon materials are evaluated as 65.8, 80.2, 90.6, and 104.7 mAh g-1 at 0.2C. Notably, coffee ground-based carbon exhibited the highest specific capacity owing to the difference in elemental composition and the degree of carbonization. Conclusively, this study suggests the possibility of utilizing as energy storage devices by employing various plant-based biomass into active materials for anodes.

키워드

과제정보

이 연구는 2022년 정부(방위사업청)의 재원으로 국방과학연구소의 지원을 받아 수행된 미래도전국방기술 연구개발사업임(No. 915066201)

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