<p>Aqueous zinc-ion batteries (AZIBs) are highly attractive for grid‑scale storage because of their inherent safety, low cost, and eco‑friendliness. However, the cathode materials currently used in aqueous zinc-ion batteries generally suffer from limitations such as low reversible capacity, poor cycling stability, and inadequate conductivity. To overcome these limitations, we fabricated a high-performance binder-free cathode via in situ growth of copper hexacyanoferrate (CuHCF) on carbon cloth (CC), denoted as CC@CuHCF. The CC@CuHCF electrode retained 51% of its capacity when the current density rose from 0.5 to 10&#xa0;A g^− 1, showing decent rate capability. In addition, after 500 cycles at 0.5&#xa0;A g^− 1, the electrode still exhibits a reversible capacity of 67.3 mAh g^− 1 with a capacity retention of 69.6%, demonstrating decent cycling stability. Notably, these electrochemical metrics are markedly superior to those of pure-phase CuHCF, which only delivers a reversible capacity of 20.16 mAh g^− 1 with a capacity retention of 27.4% after 500 cycles at 0.5&#xa0;A g^− 1. Such performance enhancement can be ascribed to the synergistic effect between the highly conductive CC substrate and the in situ grown CuHCF. The CC framework effectively reduces interfacial resistance, whereas the intimate and robust interfacial contact suppresses volumetric expansion and structural degradation of the Prussian blue particles during repeated cycling. Accordingly, both the cycling durability and specific capacity are significantly enhanced. These results show that CC@CuHCF can work well as a cathode for AZIBs, and this approach could be useful for designing sustainable and flexible energy storage devices.</p>