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Abstract
Developing efficient and sustainable energy storage devices is crucial for advancing mobile electronics and electric vehicles. While lithium-ion batteries currently dominate the market, their limitations have prompted the exploration of alternative technologies. This study investigates the potential of CuMoO4 spinel nanomaterials as cathodes for aqueous zinc-ion batteries. By combining the unique properties of copper and molybdenum oxide into spinel form, we aim to enhance charge transfer kinetics and stability, thereby overcoming the limitations of traditional CuO–MoO3 composite electrodes. The CuMoO4 electrode delivered a specific capacity of 873 mAhg−1 at 1 A/g and maintained 612 mAhg−1 even at a high current density of 10 Ag−1 Additionally, the spinel electrode retained 94% of its initial capacity after 2000 cycles at 1 Ag−1, demonstrating remarkable stability.