Status of Biomass Derived Carbon Materials for Supercapacitor Application

Table 6

The capacitance, energy density, and stability of different composites.

Carbon precursor	Composite	Method of preparation	Capacitance (F g^−1)	Energy density (W h/kg)	Power density (W/kg)	Stability	Current density ()	Reference
Flax textiles	MnO2 nanosheet/carbon cloth	In situ	683.73	46.54	45500	94% (at 1000 cycles)	2	[118]
Kenaf stem	Porous carbon/MnO2		416	17.3	198–3175	86% (at 1000 cycles)	16	[119]
Mollusc shell	Macroporous carbon/NiCO2O4		1696	8.47		88% (at 2000 cycles)	—	[120]