The excellent electrochemical performances of ZnMn2O4/Mn2O3: The composite cathode material for potential aqueous zinc ion batteries

Electrodeposited Manganese Oxide on Carbon Paper for Zinc‐Ion Battery Cathodes

“…On subsequent cycling, two reduction peaks are present at 1.26 V and 1.37 V on the cathodic scan. Two oxidation peaks are also present during the anodic scan at 1.57 V and a small shoulder at ∼1.60 V. The CV results show relatively good overlap upon cycling and the CV behaviour is similar to that of other Mn oxide‐based ZIBs …”

“…This is in large part due to Mn oxide's large theoretical capacity, non‐toxicity, abundance, numerous stable valence states, and low cost . Of the different Mn oxide phases that have been studied, there have only been a handful of instances where Mn 3 O 4 has been used as a cathode material for ZIBs . Mn 3 O 4 has been extensively studied for Zn‐air batteries and has been shown to be a good oxygen reduction reaction (ORR) catalyst for the air electrode in Zn‐air batteries …”

“…Yang et al. used a combined ZnMn 2 O 4 and Mn 2 O 3 cathode and also proposed that the material only underwent Zn 2+ intercalation during cycling . However, Chen et al.…”

“…The produced cathode material is ground and combined with carbon black and a binder to create a slurry that is cast onto a substrate. The electrode is then heated for several hours for drying, followed by a sintering step before it is ready for use . The entire fabrication process can easily take more than 24 h to generate a sample.…”

Mn3O4@NC Composite Nanorods as a Cathode for Rechargeable Aqueous Zn‐Ion Batteries

“…[4][5][6][7] Therefore, the multivalent ions-based rechargeable batteries, such as Mg 2 + , Ca 2 + , Zn 2 + , and Al 3 + -based ones, have drawn decent scientific interests with the burning desire to explore alternative energy storage systems. [14] A few suitable ZIBs cathode materials to intercalate Zn 2 + can be classified into four categories: (1) Mn-based cathode materials (such as, α, β, γ-MnO 2 , Mn 2 O 3 ), [15][16][17][18] (2) V-based cathode materials (for example, M x V 2 O 5 , M x V 3 O 7 , and V 2 O 5 ), [4,12,19] (3) Prussian blue analogs-based cathodes: for example, MFe (CN) 6 (M = Na, Zn, Cu, Mn), [20][21][22][23] and (4) other cathode materials. [11][12][13] Meanwhile, it is of great importance to reduce the environment pollution and the cost by using aqueous electrolyte, but the high polarization, the narrow voltage range of Zn 2 + and the water splitting in the aqueous battery system limit many cathode materials for the intercalation of Zn 2 + .…”