“…In many advanced applications, the low-energy density of the SCPs limits its practical applicability as an energy storage device [110][111][112]. In fact, the energy density (E = 1/2 CV 2 ) of the SCPs is linearly dependent on the specific capacitance as well as the square of the operating potential window used for study [43,47,77] To date, researchers have adopted many advanced strategies to increase the specific capacitance of the SCPs, which includes strategies to extend the operating potential window of SCPs and to fabricate the electrode using various high surface area active materials, such as carbon, carbon SWCNTs, MWCNTs, graphene, carbon aerogel, metal oxides hierarchical nano-structured, hierarchical meso-and micro-porous microstructures, organic electroactive molecules as electrode for SCPs [14,88,109,[112][113][114][115]. To increase the operating voltage of SCPs, the new material as electrode in SCPs which can operate at high voltage and deliver more power is a prime requirement.…”