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Considering the high safety, low-cost and high capacity, aqueous zinc ion batteries have been a potential candidate for energy storage ensuring smooth electricity supply. Herein, we have synthesized inverse opal manganese dioxide constructed by few-layered ultrathin nanosheets by a solution template method at mild temperature. The ultrathin nanosheets with the thickness as small as 1 nm are well separated without obvious aggregation. Used as cathode material for aqueous zinc ion batteries, the few-layered ultrathin nanosheets combined with the inverse opal structure guarantee excellent performance. A high specific discharge capacity of 262.9 mAh·g⁻¹ is retained for the 100th cycle at a current density of 300 mA·g⁻¹ with a high capacity retention of 95.6%. A high specific discharge capacity of 121 mAh·g⁻¹ at a high current density of 2,000 mA·g⁻¹ is achieved even after 5,000 long-term cycles. The …