Table 2. Performance Comparison of our Supercapacitors with Other Symmetric and Asymmetric Supercapacitors.
| materials | SC type | electrolyte | voltage (V) | Csp (F g–1) | ED (Wh kg–1) | PD (W kg–1) | retention | ref | |
|---|---|---|---|---|---|---|---|---|---|
| Co3O4/VAGN/CF//Co3O4/VAGN/CF | symmetric | PVA/KOH gel | 1 | 580 | 33 | 10 000 | 86.3% 20 K cycle | (64) | |
| Co3O4/MnO2/CC-90/AC | asymmetric | 1 M KOH | 2.2 | 616.7 | 54.71 | 1060 | 86.3% 10 K cycle | (65) | |
| Co3O4/NiO//Co3O4/NiO | symmetric | 3 M KOH | 1.4 | 720.71 | 196 | 700 | 91.35% 5 K cycle | (66) | |
| Co3O4//AC | asymmetric | KOH/PVA gel | 1.5 | 60 | 16.25 | 7500 | 98.5% 2 K cycle | (67) | |
| AC/Co3O4//AC/Co3O4 | symmetric | 1 M Na2SO4 | 1.4 | 125 | 55 | 650 | 93.75% 8 K cycle | this work |