Physicochemical properties and electrochemical behavior of binary manganese–cobalt oxide electrodes for supercapacitor applications

Performance evaluation of Asymmetric Supercapacitor based on Cobalt manganite modified graphene nanoribbons

“…Recently, Ma et al studied the effect of Co doping in MnO 2 and showed improved microstructural uniformity with increase in Co content thereby enhancing the MnO 2 performance [21]. Chang et al prepared manganese cobalt oxide by anodic deposition and inhibited the dissolution of MnO 2 [22]. High specific capacitance for cobalt doped manganese oxide prepared by potentiodynamic method on stainless steel substrate was also reported by Prasad et al [23].…”

CoWO4 nanoparticles prepared by two methods displaying different structures and supercapacitive performances

“…For example, oxides of Ru [13], Ni [14], Co [15], Mn [16], Fe [17], Mo [18], V [19], and so forth have been explored, but some problems have still been existed for these single metal oxides, including the high cost, toxicity, low SC and cycling lifetime. Interestingly, mixed metal oxides [20] and binary metal oxides [21] have been reported to exhibit higher performance than single metal oxides because of their feasible oxidation states [22] and high electrical conductivity [23], so they seems to be the promising materials for supercapacitors.…”

Pseudocapacitive behavior of manganese oxide in lithium-ion-doped butylmethylpyrrolidinium–dicyanamide ionic liquid investigated using in situ X-ray absorption spectroscopy

“…Interestingly, the electrode capacitance gradually increased during the beginning 600 cycles and then approached steady performance that was w150% of the initial capacitance. It was noted that an identical electrode showed w25% capacitance decay in Na 2 SO 4 aqueous electrolyte after the same number of cycles, mainly due to the dissolution of MnO 2 [18,19]. Since a negligible amount of dissolved Mn was found in the IL electrolyte after cycling (according to atomic adsorption spectroscopy analyses), because of the chemical benignity of the IL and thus …”