Layered barium vanadate nanobelts for high-performance aqueous zinc-ion batteries

Aqueous zinc-ion batteries (ZIBs) are deemed as the idea option for large-scale energy storage systems owing to many alluring merits including low manufacture cost, environmental friendliness, and high operations safety. However, to develop high-performance cathode is still significant for practical application of ZIBs. Herein, Ba0.23V2O5 center dot 1.1H(2)O (BaVO) nanobelts were fabricated as cathode materials of ZIBs by a typical hydrothermal synthesis method. Benefiting from the increased interlayer distance of 1.31 nm by Ba2+ and H2O pre-intercalated, the obtained BaVO nanobelts showed an excellent initial discharge capacity of 378 mAh center dot g(-1) at 0.1 A center dot g(-1), a great rate performance (e.g., 172 mAh center dot g(-1) at 5 A center dot g(-1)), and a superior capacity retention (93% after 2000 cycles at 5 A center dot g(-1)).

Automated summary

Aqueous zinc-ion batteries (ZIBs) are considered ideal for large-scale energy storage systems due to their low manufacturing cost, environmental friendliness, and high safety. Developing high-performance cathodes is crucial for practical use of ZIBs. In this study, BaVO nanobelts were successfully fabricated and exhibited excellent battery performance, including high initial discharge capacity and superior cycling stability.