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Facile synthesis of mesoporous and highly nitrogen/sulfur dual‑doped graphene and its ultrahigh discharge capacity in non‑aqueous lithium oxygen batteries KCI 등재

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  • URLhttps://db.koreascholar.com/Article/Detail/388790
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Carbon Letters (Carbon letters)
한국탄소학회 (Korean Carbon Society)
초록

High-level heteroatom, N and S, dual-doped graphene with an improved mesoporous structure was fabricated via facile in situ carbonization and used as metal-free cathode for non-aqueous lithium oxygen batteries. The prepared cathode delivered an ultrahigh specific capacity of 22,252 mAh/g at a current density of 200 mA/g as well as better cycling reversibility because of the larger and copious mesopores, which can promote the penetration of oxygen, electrons, and lithium ions and the ability to accommodate more discharge products, e.g., Li2O2, in Li–O2 batteries. The material had a high level of heteroatom co-doping in the carbon lattice, which enhanced the electrical conductivity and served as active sites for the oxygen reduction reaction.

목차
Facile synthesis of mesoporous and highly nitrogensulfur dual-doped graphene and its ultrahigh discharge capacity in non-aqueous lithium oxygen batteries
    Abstract
    1 Introduction
    2 Experimental
        2.1 Materials
        2.2 Synthesis of N- and S-dual-doped graphene
        2.3 Characterization
        2.4 Electrochemical analysis
    3 Results and discussion
    4 Conclusions
    Acknowledgements 
    References
저자
  • Seokhoon Jang(Department of Chemistry and Chemical Engineering, Inha University)
  • Jieun Kim(Department of Chemistry and Chemical Engineering, Inha University)
  • Eunbeen Na(Department of Chemistry and Chemical Engineering, Inha University)
  • Mingyu Song(Department of Chemistry and Chemical Engineering, Inha University)
  • Jinkyu Choi(Department of Chemistry and Chemical Engineering, Inha University)
  • KyongHwa Song(Research and Development Division, Hyundai Motor Company)
  • Sung‑Hyeon Baeck(Department of Chemistry and Chemical Engineering, Inha University)
  • Sang Eun Shim(Department of Chemistry and Chemical Engineering, Inha University)