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Graphite foil 1349.3 694 1582.3 4158 2718.0 2343 0.17 0.56 Graphite powder EG_P_2 EG_P_1 EG_F_2 Nanomaterials 2019, 9, 971 EG_F_1 1343.4 1781 1334.7 2868 1330.1 2764 1339.1 6058 1346.2 1343 1578.0 2994 1592.2 4081 1587.6 3822 1578.0 11,534 1568.9 10,186 2705.6 1138 2867.5 1207 2868.7 1066 2705.6 4211 2692.1 3888 0.59 0.38 0.70 0.30 0.72 0.28 0.53 0.37 To confirm the presence of double-to-few-layered stabilized graphene, SEM and HRTEM was used. A SEM image of PFA-graphene is shown in Figure 4. SEM studies the fracture surface in analysis was used. A SEM image of PFA-graphene is shown in Figure 4. SEM studies the fracture pure graphene/carbon from PFA (Figure 4). Prior work has shown that graphene aggregates can be surface in pure graphene/carbon from PFA (Figure 4). Prior work has shown that graphene seen in SEM, but it is quite difficult to image individual dispersion graphene sheets in composites at aggregates can be seen in SEM, but it is quite difficult to image individual dispersion graphene sheets low weight fractions. We observed no signs of aggregation. We could not observe individual graphene in composites at low weight fractions. We observed no signs of aggregation. We could not observe sheets in the fracture surface of graphene. individual graphene sheets in the fracture surface of graphene. The HRTEM technique allowed the dispersion of graphene sheets and was stabilized with small amount of carbon from PFA. Thin-layer graphene sheets were produced at a high yield with large flake sizes (Figure 5). Few-layered graphene sheets can be seen in Figure 5. Images of the sheet edges are visible in Figures 5b and 6d; those in Figure 5d indicate that the sheets are 2–4 or more layers thick. The HRTEM images allow to evaluate the size of electrochemically exfoliated graphene sheets as 0.7−4 μm. 0.13 0.38 7 of 12 FiFgiugruere3.3R. Raammananspspecetcrtaraoof f(a(a) )ggrarapphhitietefofoili,l,(b(b) )EEGG__FF__22aannddEEGG__FF__11, (, c()c)ggrarapphhitieteppoowwddere,r(,d(d) )EEGG_P_P_2_2 anadndEGEG_P__P1_s1asmapmlepsl.esP.oPreorseizseizdeisdtriisbtruitbiountiocnurcvuersvoefsgorfapghraepnhe esnaemspalmespolbetsaoinbetdaifnreodmfrgoramphgirtaep(he)itfeoi(le) anfodil(fa)npdo(wf)dpeor.wder. To confirm the presence of double-to-few-layered stabilized graphene, SEM and HRTEM analysisPDF Image | Electro-Exfoliation of Graphite to Graphene
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