研究目的
Investigating the synthesis and charge transport property of graphene/FLG flakes obtained by (cid:2)-waves assisted exfoliation of expanded graphite in toluene.
研究成果
FLG flakes with large lateral size and high electrical conductivity can be prepared by rapid exfoliation of EG in toluene with the assistance of (cid:2)-waves irradiation. The material exhibits very low sheet resistance and is comparable to high quality graphenes synthesized by CVD method.
研究不足
The yield of FLG synthesis varies from 7% to 20%, and the process requires specific conditions for optimal results.
1：Experimental Design and Method Selection:
FLG was synthesized by (cid:2)-wave assisted exfoliation of expanded graphite in toluene. The suspension was cooled, and the FLG sheets were extracted from the supernatant.
2：Sample Selection and Data Sources:
Expanded graphite (EG) was purchased from Carbone Lorraine. Toluene was purchased from Sigma Aldrich.
3：List of Experimental Equipment and Materials:
Mars (CEM Corp.) microwave oven, Elma sonic 102168022 sonic bath sonicator, BandelinSonopuls2200 tip sonicator.
4：Experimental Procedures and Operational Workflow:
EG was ultrasonicated in toluene, then treated in a microwave oven at 600 W of power and 160°C for 10 min. The suspension was cooled, and FLG sheets were extracted.
5：Data Analysis Methods:
TEM, SEM, XPS, Raman spectroscopy, and electrical measurements were performed to characterize the FLG.
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