A confined nanocrystal-in-nanofiber architecture: stabilizing high-entropy oxide nanoparticles in carbon nanofibers for superior lithium storage

Ultrafine high-entropy oxide (CoFeNiCrMn) 3 O 4 nanoparticles are in situ encapsulated within carbon nanofibers via electrospinning. This unique architecture enables fast kinetics and superior structural stability for high-performance lithium storage.