δ-MnO2 nanoflower/graphite cathode for rechargeable aqueous zinc ion batteries

This study focuses on δ-MnO2 with nanoflower structure supported on graphite flake for use as an intercalation host material of rechargeable aqueous ZIBs. The results obtained pave the way for improving the electrical conductivity of MnO2 by using graphite flake support. The graphite flake support significantly improved performances of ZIBs and made them attractive for use in a wide variety of energy applications.

Schematics of the chemistry of the zinc-ion battery. Zn2+ ions migrate between tunnels of the MNG cathode and Zn anode. The inset on the right shows Zn2+ ion insertion and interconnection between δ-MnO2 and graphite.

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