These favourable properties are reflected in the high capacity (205.3 mAh g -1 ) and rate capability (135.4 mAh g -1 at 10 A g -1 ) achieved when VS2 is used as cathode for zinc-ion batteries, as demonstrated by Sun et al. Additionally, Yu et al. have recently shown that it is possible to induce the growth of a stable oxide layer on VS2 cathodes by controlling the working potential of the zinc battery. The resulting VS2/VOx cathodes display higher capacity (301 mAh g -1 ) and greater stability (75% capacity retention after 3000 at 1 A g -1 ). However, VS2-based cathodes raise some concerns in terms of structural dissolution and possible oxidation in aqueous ZnSO4 electrolytes, which could affect the energy storage capability and long-term cycling. Several approaches have been proposed to mitigate the dissolution of vanadium-based electrodes in ZIBs, such as surface coatings, shape engineering, heterostructure formation and electrolyte optimization. Particularly, adjusting the electrolyte concentration is an effective approach to mitigate the dissolution of VS2 cathodes and regulate the extended cycling of ZIBs. In order to improve the energy storage performance, ZnCl2 water-in-salt electrolytes (WISE) have been recently developed, presenting high concentrations (up to 31 mol per kg of solvent) than conventional ZnSO4 electrolytes, which improves the performance and stability of the electroactive materials in the electrodes. Meanwhile, VS2 cathodes for ZIBs have been mainly investigated as coin and Swagelok cells, which are not fully compatible with lightweight wearable devices. Advanced manufacturing methods, able to meet the demand for batteries with customized shape, are yet to be demonstrated. 3D Printing is a versatile manufacturing technique that has drawn interest for the fabrication of form-free and miniaturized electrodes for energy storage devices. It enables the customization of the battery shape, which is a viable route to meet the requirements of wearable electronics. Additionally, it improves the electrochemical performance, owing to the higher areal loading of active materials and faster charge transport. On the other hand, the majority of studies on 3D Printed electrodes rely on NMP to disperse the active materials for ZIBs and obtain printable inks. However, NMP presents toxicity concerns and its use aggravates the environmental impact of ZIBs, reducing the advantages over lithium-ion batteries. In this work, we demonstrate the use of extrusion-based 3D Printing (Direct Ink Writing) as a flexible manufacturing technique to fabricate VS2 cathodes for aqueous zinc-ion batteries. The scalable hydrothermal synthesis employed for VS2 ensures control over the morphology of the material, which can therefore be tailored for the 3D Printing process. We developed a novel ink formulation based on VS2 for Direct Ink Writing and validated its printability through extensive rheological analysis. Importantly, the ink formulation here reported does not contain NMP and can be potentially applied to other cathode materials beyond VS2. The cathode dissolution was effectively overcome using high-concentration water-in-salt electrolyte. The printed electrodes show a capacity of ~ 1.98 mAh cm -2 (~ 72 mAh g -1 ) cycles in 30 m ZnCl2, owing to a combination of diffusionlimited and pseudocapacitive charge storage processes. These results indicate the viability of 3D Printing to produce customizable energy storage devices, demonstrating the formulation of aqueous functional inks which can be produced at scale and printed in air, and a zinc-ion battery based on a new cathode material with a ~55% cycle stability up to 150 cycles.