The BET surface area, coulombic efficiency, ID/IG, layer spacing, yield of NC and NC-x (2, 3, 4).
| Sample | S BET a (m2 g−1) | C (%) | ID/IG | Layer spacingb | Yieldc (%) |
|---|---|---|---|---|---|
| NC | 277.4698 | 79.6 | 0.6960 | 3.769 | 91.6 |
| NC-2 | 740.7407 | 90.3 | 0.8985 | 3.927 | 96.7 |
| NC-3 | 1473.6663 | 97.9 | 0.8792 | 3.935 | 94.3 |
| NC-4 | 864.7580 | 93.7 | 0.9823 | 3.944 | 92.1 |
a
The SBET was determined by using multi-point BET method.
b
Layer spacing of (002) crystal plane.
c
Yield is before and after carbonization of NC, yield is before and after activation of NC-2, NC-3, and NC-4.