Comparisons of the heterogeneous electron transfer (k0), electrochemically active area (Ae), EIS charge transfer resistance (Rct) and solution resistance (Rs) for the commercial conductive PLA and the three bespoke rPETg filaments. The uncertainties are the standard deviations across three different additive manufactured electrode measurements.
| Filament | k 0 (× 10−3 cm s−1) | A e (cm2) | R S (kΩ) | R CT (kΩ) |
|---|---|---|---|---|
| CB/MWCNT PETg | 0.20 ± 0.04 | 0.32 ± 0.03 | 0.89 ± 0.02 | 21.4 ± 0.18 |
| CB/GNP PETg | 0.53 ± 0.02 | 0.43 ± 0.03 | 0.73 ± 0.01 | 8.81 ± 0.08 |
| CB/MWCNT/GNP rPETg | 0.88 ± 0.01 | 0.48 ± 0.02 | 0.35 ± 0.01 | 5.11 ± 0.04 |
| Commercial PLA | 0.46 ± 0.02 | 0.54 ± 0.02 | 0.78 ± 0.01 | 5.19 ± 0.04 |