Table 1 The specific capacitances and rate capabilities of this work compared with other work about EDLCs or mesoporous carbon supercapacitors.

This work

315.6 F·g⁻¹ at 1 A·g⁻¹

214.6 F·g⁻¹ at 50 A·g⁻¹ (69% retention)

OMC/CNTs nanocomposite⁵⁸

338.1 F·g⁻¹ at 1 A·g⁻¹

38% retention at 50 A·g⁻¹

CNTs and activated high surface area carbon⁵⁹

200 F·g⁻¹ at 1 A·g⁻¹

NA

Graphene Hydrogels⁶⁰

220 F·g⁻¹ at 1 A·g⁻¹

64% retention at 100 A·g⁻¹

Mesoporous carbon spheres/RGO sheets⁶¹

41.5 F·g⁻¹ at 1 A·g⁻¹

85% retention at 25 A·g⁻¹

Flower-like and hierarchical porous carbon materials⁶²

294 F·g⁻¹ at a scan rate of 2 mV·s⁻¹

71% retention at 500 mV·s⁻¹

Hollow carbon spheres anchored on carbon nanotubes⁶³

201.5 F·g⁻¹ at 0.5 A·g⁻¹

69% retention at 20 A·g⁻¹