Solvothermal Synthesis of Mn₃O₄ Nanoparticle/Graphene Sheet Composites and Their Supercapacitive Properties

Table 1

Synthesized conditions and electrochemical performances of Mn₃O₄/graphene composites prepared by hydrothermal or solvothermal routes in published literatures.

Basic synthesis information	Electrolyte	Potential window (V)	Current loador scan rate	Maximum specific capacitance (F/g)	Reference
Graphene sheets + KMnO4 + H2O + ethylene glycol,; solvothermal 393 K for 4 h	1 M Na2SO4	−0.3 to 0.7; (Ag/Ag Cl)	5 mV/s	120 (3-electrode)	[22]
GO + Mn(CH3COO2)·4H2O + ethanol + H2O,; solvothermal 453 K for 11 h	1 M Na2SO4	−0.2 to 0.8; (SCE)	5 mV/s	225 (3-electrode)	[23]
GO + KMnO4 + H2O + hydrazine hydrate,; hydrothermal 453 K for 6 h	1 M Na2SO4	−0.2 to 0.8; (SCE)	0.1 A/g	171 (3-electrode)	[24]
GO + Mn(CH3COO2)·4H2O + dimethyl sulfoxide; solvothermal 393 K for 24 h	1 M Na2SO4	−0.2 to 0.8; (SCE)	0.1 A/g	147 (3-electrode)	[29]