Table 1. A summary of the types of electrode fabricated to the same ±2.4% thickness variation and their corresponding areal capacitance per electrode in a solid-state supercapacitor cell arrangement.
| Electrode | Description | Capacitance (mF cm−2) | |||
|---|---|---|---|---|---|
| 5 mV s−1 | 100 mV s−1 | 500 mV s−1 | 2000 mV s−1 | ||
| Ec | Randomly mixed c-TiO2 + MWNT | 91.7 | 46.3 | N/A | N/A |
| Ep | Randomly mixed p-TiO2 + MWNT | 53.3 | 18.8 | N/A | N/A |
| Epc | Randomly mixed p-TiO2 + c-TiO2 + MWNT | 60.1 | 28.6 | N/A | N/A |
| E2 | Two-layer electrode (A layer of p-TiO2 + MWNT directly on the ion conducting membrane, and then a layer of c-TiO2 + MWNT) | 247.6 | 65.9 | 11.5 | 3.5 |
| E3 | Three-layer electrode (A layer of p-TiO2 + MWNT directly on the ion conducting membrane, a layer of c-TiO2 + MWNT, and then a layer of graphene) | 272.5 | 77.1 | 20.2 | 11.8 |
The mass ratio of TiO2 : MWNT was kept the same for all electrodes.