Facile synthesis of porous MnCo₂O_4.5 hierarchical architectures for high-rate supercapacitors

Abstract

A supercapacitor electrode of porous urchin-like MnCo2O4.5 hierarchical architectures demonstrated an outstanding rate capability and excellent cycling stability, which could be considered as a potential mixed transition metal oxide material for high-rate supercapacitors.

Coordination polymer template synthesis of hierarchical MnCo2O4.5 and MnNi6O8 nanoparticles for electrochemical capacitors electrode

“…The specific capacitance of Mn/Co-600 electrode is determined to be 158, 144, 132, 113, and 97 F g À1 at scan rates of 5, 10, 20, 50, and 100 mV s À1 , respectively. This value is similar to the reported data on other MnCo 2 O 4.5 electrode (151.2 F g À1 at 5 mV s À1 ) [25]. The capacitance value of Mn/Co-500 and Mn/Co-600 electrode at different scan rates can be seen in Table S1 in SM.…”

Characterization of MgCo2O4 as an electrode for high performance supercapacitors

“…Furthermore, TTMOs' structural diversity provide opportunities to modify the physical and chemical properties such that the capacitance can be tailored [1,3,15]. An added advantage of synthesizing cobalt based TTMOs is the reduction in the cost of rare cobalt by partially substituting it with other TMOs [16].…”

High-performance binder-free supercapacitor electrode by direct growth of cobalt-manganese composite oxide nansostructures on nickel foam

“…For example, Li et al [22] prepared MnCo 2 O 4 quasi-hollow microspheres which maintained remarkable reversible capacities of 755 mA h g -1 at a current density of 200 mA g -1 after 25 cycles when used as an anode material for lithium ion batteries. Recently, efforts have been devoted to the study of Co-Mn oxide structures as supercapacitor electrode materials [21,24,27-29]. Pure MnCo 2 O 4 [21,24] and MnCo 2 O 4.5 [27] nanostructures have been synthesized through the hydrothermal method or solvothermal technique and tested as supercapacitor electrodes, showing potential applications in supercapacitors.…”

“…Recently, efforts have been devoted to the study of Co-Mn oxide structures as supercapacitor electrode materials [21,24,27-29]. Pure MnCo 2 O 4 [21,24] and MnCo 2 O 4.5 [27] nanostructures have been synthesized through the hydrothermal method or solvothermal technique and tested as supercapacitor electrodes, showing potential applications in supercapacitors. Co-Mn composite oxide structures have also been fabricated through the thermally decomposing method [28] or electroless electrolytic technique [29], showing improved electrochemical performance compared with the pure MnCo 2 O 4 and MnCo 2 O 4.5 nanostructures.…”