Abstract <p>Rechargeable aqueous zinc-ion batteries (AZIBs) have emerged as potential large-scale energy storage devices due to their high energy density, low cost, high safety, and environmental friendliness. However, the primary issues faced by Mn-based cathode materials for AZIBs are structural transformations during cycling and inherently poor electrical conductivity, resulting in unstable capacity output. Herein, a new and highly reversible Mn-based microsphere cathode material with a porous framework and carbon (Mn₂O₃/C) is prepared through a metal-organic framework templated strategy. This material leverages its unique hollow porous structure and the synergistic interaction between Zn²⁺ and Mn²⁺ in the electrolyte, which enhances the diffusion kinetics of Zn²⁺ and the effective contact area between the active site and the electrolyte. Additionally, carbon coating improves the electrical conductivity of the material, ensures stable Zn²⁺ diffusion of Zn²⁺ during cycling, and maintains structural stability. The Zn//Mn₂O₃/C battery exhibits a reversible capacity of 202 mAh·g⁻¹ at a current density of 0.2 A·g⁻¹ and retains a specific capacity of 89 mAh·g⁻¹ after 950 cycles at a high rate of 1.0 A·g⁻¹. This electrode design may pave the way for the development of low-cost and long-life rechargeable AZIBs.</p> Graphic abstract <p></p>