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논문 기본 정보

자료유형
동향자료
저자정보
Son, Ki-Soo (School of Chemical and Biochemical Engineering, Pusan National University) Kim, Seok (School of Chemical and Biochemical Engineering, Pusan National University)
저널정보
한국탄소학회 Carbon letters Carbon letters 제15권 제2호
발행연도
2014.1
수록면
113 - 116 (4page)

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Due to their morphology, electrochemical stability, and function as a conducting carbon matrix, graphene nanosheets (GNS) have been studied for their potential roles in improving the performance of sulfur cathodes. In this study, a GNS/sulfur (GNS/S) composite was prepared using the infiltration method with organic solvent. The structure, morphology and crystallinity of the composites were examined using scanning electron microscopy, transmission electron microscopy, and X-ray diffraction. The electrochemical properties were also characterized using cyclic voltammetry (CV). The CV data revealed that the GNS/S composites exhibited enhanced specific-current density and ~10% higher capacity, in comparison with the S-containing, activated-carbon samples. The composite electrode also showed better cycling performance for multiple charge/discharge cycles. The improvement in the capacity and cycling stability of the GNS/S composite electrode is probably related to the fact that the graphene in the composite improves conductivity and that the graphene is well dispersed in the composites.

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