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자료유형
동향자료
저자정보
An, Jung-Chul (Energy Materials Research Group, Research Institute of Industrial Science & Technology [RIST]) Lee, Eun Jung (Energy Materials Research Group, Research Institute of Industrial Science & Technology [RIST]) Yoon, So-Young (Energy Materials Research Group, Research Institute of Industrial Science & Technology [RIST]) Lee, Seong-Young (Materials Solution Research Group, Research Institute of Industrial Science & Technology [RIST]) Kim, Yong-Jung (Energy Materials Research Group, Research Institute of Industrial Science & Technology [RIST])
저널정보
한국탄소학회 Carbon letters Carbon letters 제26권
발행연도
2018.1
수록면
81 - 87 (7page)

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Morphological differences in multi-layered graphene flakes or graphene nanoplatelets prepared by oxidative (rGO-NP, reduced graphene oxide-nanoplatelets) and non-oxidative (GIC-NP, graphite intercalation compound-nanoplatelets) routes were investigated with various analytical methods. Both types of NPs have similar specific surface areas but very different structural differences. Therefore, this study proposes an effective and simple method to identify structural differences in graphene-like allotropes. The adsorptive potential peaks of rGO-NP attained by the density functional theory method were found to be more scattered over the basal and non-basal regions than those of GIC-NP. Raman spectra and high resolution TEM images showed more distinctive crystallographic defects in the rGO-NP than in the GIC-NP. Because the R-ratio values of the edge and basal plane of the sample were maintained and relatively similar in the rGO-NP (0.944 for edge & 1.026 for basal), the discrepancy between those values in the GIC-NP were found to be much greater (0.918 for edge & 0.164 for basal). The electrical conductivity results showed a remarkable gap between the rGO-NP and GIC-NP attributed to their inherent morphological and crystallographic properties.

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