JIANG Xiaolin;LI Jun;LIU Zhen;WEI Linlin;WEI Hui;

• 1:National Institution of Clean and-Low-Carbon Energy
• 2:CHN Energy

Abstract：

Due to the structural and performance disparities between graphene and graphene-like carbon materials, they exhibit distinct potential applications. Appropriate characterizations are important to analyze the properties of graphene materials and to guide their research. In this paper, four materials labeled as single-layer graphene(G1), few-layer graphene(G2), multilayer graphene(G3), and industrial-grade multilayer graphene(G4) were studied, and their physical and chemical structures were characterized by Raman spectroscopy, X-Ray Diffraction(XRD), Scanning Electron Microscopy(SEM), Transmission Electron Microscope(TEM), Atomic Force Microscopy(AFM) and N_2 adsorption/desorption methods. The means of characterization, data analysis and mutual verification of each characterization result were discussed. The results show that G1 has a relatively low number of layers with I_D/I_G=0.88. Validation through TEM, AFM, and XRD confirms an actual number of 10-20 layers, a specific surface area of 564.03 m~2/g, and the typical characteristics of graphene, placing it within the category of graphene. In contrast, G2-G4 have more than 100 layers with I_D/I_G=0.07-0.18. The specific surface area of G2-G4 is 30-50 m~2/g. Combining structural and morphological results, these materials are classified as the graphene-like category. This study provides reference and guidance for the analysis and quality assessment of graphene materials.

Key Words： graphene;Raman spectroscopy;SEM;TEM;AFM;XRD;characterization methods;verification process

Abstract:

Keywords:

Foundation: 国家能源投资集团科技创新项目(GJNY-21-85)

Authors: JIANG Xiaolin;LI Jun;LIU Zhen;WEI Linlin;WEI Hui;

DOI: 10.13226/j.issn.1006-6772.22010701

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