Abstract
Vanadium oxides (VOs) are promising cathode materials for aqueous batteries due to their high theoretical capacity, but they face challenges such as sluggish kinetics and V dissolution. To overcome these issues, we introduce a universal alcohol-based molecule coupling (AMC) method to regulate amorphousness and inhibit V dissolution in VOs (VO(2), V(2)O(5), and V(6)O(13)), resulting in high-performance cathodes. The strategy enables alcohol molecules with different chain lengths (ethanol, isopropanol, and isobutanol) to couple with VOs by forming V─OH bonds under Lewis acid-based interactions, inducing controlled amorphization. Among these, isopropanol coupling stands out by enabling the formation of short-range ordered amorphous structure (SOA-VO/Ipr). This structure enhances the reaction kinetics and suppresses V dissolution. As a result, the SOA-VO/Ipr cathode achieves 219.4 mAh g(-1) at 100 A g(-1), retains 92.6% capacity over 10,000 cycles, and delivers 228.8 mAh g(-1) at 9.1 A g(-1) under high loading (21.9 mg cm(-2)) over 3500 cycles, demonstrating a promising method for durable zinc-ion batteries.