Facile synthesis of hierarchical nanocage MnCo 2 O 4 for high performance supercapacitor

A review of performance optimization of MOF-derived metal oxide as electrode materials for supercapacitors

“…Dong et al synthesized MnCo 2 O 4 nanocage by calcinating dual‐metal zeolitic imidazolate framework (ZIF, Mn‐Co‐ZIF). Compared with Co 3 O 4 electrode fabricated from Co‐ZIFs at the same preparation conditions as MnCo 2 O 4 , MnCo 2 O 4 exhibited better performance.…”

“…Dong et al 63 Ternary transition MOs owned more active sites for redox reaction and more favorable electron conductivity. Meanwhile, the hollow nanocage structures of MnCo 2 O 4 that were consisted of interconnected NPs could provide more channels for ion insertion and extraction.…”

Metal oxide-based supercapacitors: progress and prospectives

“…Second, in comparison with bulk metal oxide materials, novel nanostructured metal oxides are usually porous and can provide a higher surface specic area, which is conducive to the inltration of the electrodes, full contact between the active materials and electrolyte, the transportation of ions in the electrolytes and the utilization of the active materials at high rate charging-discharging. [12][13][14][15] In addition, the satisfactory electro-active sites, and chemical and highthermal stabilities of the metal oxide materials guarantee high pseudo-capacitive performances and cyclic stability. Third, increasing number of metal oxide/C composites have been reported, including carbon nanotubes, carbon nanobers, graphene and amorphous carbon materials, which have dramatically improved electroconductivity and further enhanced specic capacitance and rate performances.…”

High-performance self-assembly MnCo2O4 nanosheets for asymmetric supercapacitors

“…Recently, various spinel-type oxides with the formula of AB 2 O 4 , where A and B are transition metals (A = Co, Ni, Zn, Mn and B = Mn, Co) [24,[33][34][35][36][37][38] have been developed to serve as the electrode materials for PCs. Especially, metal oxide nanostructures as supercapacitor materials are fascinating for excellent properties because the large surface area could generate more active interfacial sites.…”

“…The electrochemical performance of spinel-type MnCo 2 O 4 mainly depends on their nanostructures. Nanocage [35] , flowerlike [42] and nanofibers [43] of MnCo 2 O 4 have been reported to be more suitable for SCs. Although spinel-type MnCo 2 O 4 with different nanostructures has fabricated, the practical application of MnCo 2 O 4 electrodes is still hindered by the fast capacity fading over cycling, primarily due to severe agglomeration and destruction of the electrode materials during long cycling process [44] .…”