Holey graphene confined hollow nickel oxide nanocrystals for lithium ion storage

Abstract Utilization of the Kirkendall effect, a composite of holey graphene confined hollow nickel oxide nanocrystals is designed and successfully fabricated using an in situ etching approach. The composite exhibits remarkable lithium storage performance including high reversible specific capacity, great cycling durability, and excellent rate capability. This work offers a promising innovative architecture to designing high-performance electrode materials for advanced lithium ion batteries.