Preparation and performance of activated carbon for supercapacitor

Activated carbon samples were prepared with amygdaline shell activated carbon as raw material and KOH as activator.The supercapacitor with the activated carbon samples in 1 mol/L LiClO_4/PC electrolyte was assembled and the electrochemical performance was tested.The specific capacity was raised with increasing of alkali dosages and the maximum was 161 F/g.The specific capacitance was increased with increasing of the specific surface area and its increment decreased when the specific surface area was above 2 000 m~2/g.