The mesoporous carbons have been synthesized by using alpha-D(+)-Glucose, D-Glucosamine hydrochloride or their mixture as carbon precursors and mesoporous silicas (SBA-15 or MCF) as hard templates. The as-prepared products show a large pore volume (0.59-0.97 cm(3) g(-1)), high surface areas (352.72-1152.67 m(2) g(-1)) and rational nitrogen content (ca. 2.5-3.9 wt.%). The results of electrochemical tests demonstrate that both heteroatom doping and suitable pore structure play a decisive role in the performance of supercapacitors. The representative sample of SBA-15 replica obtained using D-Glucosamine hydrochloride only exhibits high specific capacitance (212.8 F g(-1) at 0.5 A g(-1)) and good cycle durability (86.1% of the initial capacitance after 2000 cycles) in 6M KOH aqueous electrolyte, which is attributed to the contribution of double layer capacitance and pseudo-capacitance. The excellent electrochemical performance makes it a promising electrode material for supercapacitors. (C) 2016 Elsevier B.V. All rights reserved.