Abstract
Supercapacitors have been emerged as an important energy storage device, owing to their high power density, excellent cycle ability, fast charge-discharge processes and low self-discharging. In this work, we have developed a facile soft-templated hydrothermal procedure to produce hollow mesoporous carbon spheres, which can deliver a relatively high capacitance (~190 F/g) and an energy density of ~26.38 Wh/kg at the discharging current of 1 A/g. The hollow cavity and micropore volume are shown to be the main factors that contribute to the good capacitive behavior.
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