Multiple heterostructures, rich oxygen vacancies and expansion counteraction effect co-boosted VO2/V2O3/V6O13@nitrogen-doped carbon nanosheets as a high-performance cathode for aqueous zinc-ion batteries

and retains 86.5% of maximum capacity after 2000 cycles. This study not only proves that calcination of organic-inorganic hybrid layered vanadate is a promising approach for synthesizing high-performance vanadium oxide cathodes, but also presents the "expansion counteraction" strategy to tackle the issue of volume changes for vanadium oxide cathodes.