首页|Reduced graphene oxide modified c-MnO2 nanoflowers cathode with oxygen vacancy for advanced rechargeable aqueous zinc-ion batteries
Reduced graphene oxide modified c-MnO2 nanoflowers cathode with oxygen vacancy for advanced rechargeable aqueous zinc-ion batteries
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NETL
NSTL
Elsevier
Manganese dioxide (MnO2) has become a great potential cathode material for aqueous zinc-ion batteries (AZIBs), owing to its advantages such as high theoretical capacity, moderate potential window, low price and abundant reserves. However, the inner poor electrical conductivity and sluggish reaction kinetics of MnO2 can lead to the irreversible phase transition and capacity decay, limiting its further application. Herein, we developed a simple co-precipitation method to construct reduced graphene oxide modified MnO2 nanoflowers with hexagonal structure (MnO2/RGO). Ascribed to the synergetic effects of MnO2 nanoflowers with high theoretical capacity and RGO with high conductivity and stability, the MnO2/RGO composite delivers excellent zinc-ion storage performance with superior cycling stability (222.0 mAh g- 1 at 0.2 A g- 1 after 200 cycles and 72.6 mAh g- 1 at 2.0 A g- 1 after 3000 cycles), fast charge transfer and ion diffusion kinetics.
NETL
NSTL
Elsevier
