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Erschienen in:
14.05.2018
Synthesis of CoMn2O4 thin films on Ni foams by electrostatic spray deposition as anodes for sodium–ion batteries
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 13/2018
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Abstract
CoMn2O4 films on nickel foam were successfully synthesized by electrostatic spray deposition method followed by annealing in Ar atmosphere for sodium–ion battery anodes. The CoMn2O4 film exhibits porous architecture with a pore size of around 3–4 µm. The CoMn2O4 electrode as a binder-free anode exhibits superior reversible cycling performance and rate capability. It remains reversible specific capacity of 185 mAh g−1 at 100 mA g−1 after 50th cycle. The stable electrochemical performance could be attributed to the unique CoMn2O4 architecture on Ni foam, which could provide high contact area with electrolyte, pronounced tolerance to volume variation, and enhance the electrical conductivity.