Perovskite SrVO3 as novel cathode materials for high-rate aqueous zinc-ion batteries

Aqueous Zinc ion batteries (AZIBs) is well considered as a potential candidate with green, safety and low cost for large-scale grid storage. Perovskite oxide SrVO3 can be used as the cathode material for AZIBs due to its high electrically conductive. Therefore, the SrVO3 as a novel cathode material by sol-gel route was prepared to investigate the electrochemical performance. The SrVO3 exhibits outstanding rate capability with high reversible capacities of 142.7 mA h g(-1) at 200 mA g(-1), 134.9 mA h g(-1) at 300 mA g(-1), and 105.3 mA h g(-1) at 2000 mA g(-1) are ascribed to the fast diffusion reaction kinetics. Moreover, the cycling performance of SrVO3 was delivered with capacity retention of 79 % after 3000 cycles at a current density of 2000 mA g(-1) in the 0.4-1.8 V voltage window. This work provides a new prospect for the development of perovskite-type cathode materials for AZIBs.