K2V6O16·2.7H2O nanorod cathode: an advanced intercalation system for high energy aqueous rechargeable Zn-ion batteries

Layered K₂V₆O₁₆·2.7H₂O nanorod cathode, utilized for aqueous rechargeable Zn-ion batteries, displays high reversible capacities, exceptional rate capabilities and long cycle-span of 700 (altering three different current densities) and 500 (~82% capacity retention at 6 A g⁻¹) cycles.