The positive and negative electrochemical capacitor electrodes are generally composed of the same carbon material with same active mass loading and this system is so called “equal electrochemical capacitor configuration.
In order to increase the specific interfacial area between electrochemical capacitor electrode and electrolyte, themass ratio of the electrochemical capacitor electrode plays a vital role in the utilization of active carbon and life cycle of electrochemical capacitor.
The activated carbon fibres electrode with high active mass leading showed an excellent gravimetric capacitance of125 F g −1 (63 F cm −3) at 1 Ag -1 current density in 3.0 V.
Design of Lithium-Ion Capacitors In terms of LIC design, the process of pre-lithiation, the working voltage and the mass ratio of the cathode to the anode allow a difference in energy capacity, power efficiency and cyclic stability. An ideal working capacity can usually be accomplished by intercalating Li + into the interlayer of graphite.
Author to whom correspondence should be addressed. Lithium-ion capacitors (LICs) have gained significant attention in recent years for their increased energy density without altering their power density. LICs achieve higher capacitance than traditional supercapacitors due to their hybrid battery electrode and subsequent higher voltage.
Equal mass configurations of both ACF andYP-50 electrochemical capacitor showed lower Coulombic efficiencies than unequal mass configurations and these results were further confirmed the instability of the electrodes which might be related to the degradation of either the electrolyte/the current collector or the carbon electrodes.