Table 1.
Code used in the article, method of production, grade and producer, BET, Raman ID/IG ratio, Oxygen content calculated from XPS of the different GRM.
| GRM-# | Preparation Method | Grade & Producer | Surface Area BET [m2/g] | Defectiveness, as ID/IG Ratio by Raman | Oxygen%, Atomic by XPS |
|---|---|---|---|---|---|
| 1 | EXP | Research grade [58], Avanzare (E) | 22 | 0.12 | 1.8 |
| 2 | EXP | Research grade [59], Avanzare (E) | 39 | 0.10 | 5.0 |
| 3 | ND | G2 Nan, Nanesa (I) | 27 | 0.08 | 1.7 |
| 4 | TRGO | Research grade [15], Avanzare (E) | 210 | 1.58 | 3.2 |
| 4T | TRGO + HT | GRM-4, annealed 1700 °C | 123 | 0.09 | 0.4 |
| 5 | TRGO | EXG98, Graphit Kropfmühl (D) | 450 | 0.92 | 7.0 |
| 5T | TRGO + HT | GRM-5, annealed 1700 °C | 300 | 0.10 | 1.1 |
| 6 | TRGO | Research grade, Avanzare (E) | 196 | 1.35 | 2.0 |
| 7 | LPE | ElicarbSP8082, Thomas Swan (UK) | 35 * | 0.22 | 4.4 |
| 8 | ND | x-GnP-M25, XG Science (US) | 98 | 0.16 | 0.5 |
| 9 | ND | A12,Graphene Supermarket (US) | 38 | 0.40 | 4.9 |
| 10 | ND | x-GnP-C500, XG Science (US) | 500 * | 0.68 | 5.7 |
| 11 | ND | N002-PDR-HD, Angstron Materials (US) | 406 | 1.33 | 1.0 |
* As from product technical datasheet. EXP: expansion of graphite intercalation compound. TRGO: oxidation of graphite followed by thermal reduction. LPE: Liquid phase exfoliation of graphite. HT: High Temperature annealing. ND: non disclosed.