Facile Synthesis of Nitrogen-Doped Microporous Carbon Spheres for High Performance Symmetric Supercapacitors

Table 3 Comparison of synthesis time and electrochemical performances of CSs synthesized by soft-template or Stöber-like methods

Carbon spheres	Synthesis method	Template	Synthesis time	Specific capacitance (F g^− 1)	Cycling	Electrolyte	Ref.
N-OMCS^a	soft-template	F127	24 h	288 (0.1 A g^− 1)	100% (20000)	6 M KOH	[45]
ACNS^b	soft-template	F127	48 h	243 (0.2 A g^− 1)	96.1% (10000)	6 M KOH	[46]
NHCSs^c	soft-template	F127	40 h	356 (0.2 A g^− 1)	91% (5000)	6 M KOH	[47]
NHPCNs^d	soft-template	F127	24 h	376 (1 A g^− 1)	95.7% (10000)	6 M KOH	[37]
NLEMCs^e	soft-template	CTAC	24 h	323.2 (0.2A g^− 1)	85% (1000)	6 M KOH	[48]
MCNs^f	soft-template	PS-b-PEO	48 h	350 (0.1 A g^− 1)	100% (10000)	1 M H₂SO₄	[49]
MCNS^g	soft-template	F108	34 h	224 (0.2 A g^− 1)	93% (10000)	6 M KOH	[50]
PCNS^h	soft-template	F108	40 h	132 (0.2 A g^− 1)	97.5% (10000)	6 M KOH	[51]
N-UCNsⁱ	Stöber-like	–	48 h	269 (1 A g^− 1)	90.3% (10000)	6 M KOH	[25]
MCSs^j	Stöber-like	–	48 h	196 (1 mV s^− 1)	–	1 M H₂SO₄	[52]
MCMs^k	Stöber-like	SiO₂	48 h	289 (1 A g^− 1)	90.3% (10000)	6 M KOH	[53]
MMCSs^l	Stöber-like	SiO₂	48 h	314 (0.5 A g^− 1)	96% (500)	6 M KOH	[54]
NMCSs	Stöber-like	F108	6 h	415 (0.2 A g^− 1) 357 (0.5 A g^− 1)	96.9% (10000)	6 M KOH	This work