Back Cover Image, Volume 6, Number 9, September 2024

Back cover image: To achieve high-performance practical batteries, synergistically engineering intrinsic defects and heterostructures of metal oxide electrodes is highly desirable but remains challenging. In article number cey2.517, Yang et al. report on the crafting of hierarchically-electrospun carbon nanofibers integrated with oxygen vacancies-enriched V2O3 nanosheets. Accordingly, the as-fabricated V2O3 anode shows high reversible capacity, superior rate capability, and long cycling stability. An all-electrospun full-battery with an electrospun V2O5 cathode and an electrospun polyimide separator is further assembled that delivers an impressive energy density at the high power density.