<p>Aqueous zinc-ion batteries have garnered significant attention due to their high safety and low cost, yet the development of high-performance cathode materials remains a critical challenge. This study prepares a Mn₃O₄/WS₂ composite cathode material. Its zinc storage performance in aqueous zinc-ion batteries is systematically investigated using structural characterization techniques, including X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, and scanning electron microscopy, alongside electrochemical testing methods such as cyclic voltammetry and electrochemical impedance spectroscopy. Results indicate that at a mass ratio of 2:1, the composite cathode exhibits a high specific capacity of 348 mAh g^− 1 at a current density of 0.5&#xa0;A g^− 1, outperforming Mn₃O₄ cathodes (304 mAh g^− 1) and WS₂ cathodes (170 mAh g^− 1). After 1812 cycles, it maintains 80% capacity retention with significantly enhanced rate performance. Mechanistic studies reveal that the two-phase composite not only effectively buffers volume strain and suppresses manganese dissolution during Mn₃O₄ cycling but also optimizes electrode conductivity and interfacial transport kinetics. The energy storage process results from the combined contributions of capacitive and diffusion-limited behaviors. This work provides a straightforward and scalable composite strategy for developing high-capacity, long-life cathode materials for aqueous zinc-ion batteries.</p>