Electrical Activation of Nano/Micro-size Crystallite Carbon

Realization of electrical activation of crystallite carbon in electrochemical capacitors has been studied. Constant current charge-discharge and cyclic voltammetry were performed to characterize the electrical activation of crystallite carbon. Results showed that electrochemical capacitor could be activated deeply electrically at high voltage and obtain larger capacitance, yet unstable cycle performance. Electrical activation just takes place in certain current range and the optimized current need to apply for yielding good electrical activation results with large capacitance and stable cycle performance. In further study, it was found that the crucial aspect impacting realization of electrical activation was electric energy.