Metal–organic framework-induced formation of core–shell ZnCo2O4 spheres composed by nanoparticles with enhanced lithium storage properties

Abstract

In this study, core–shell ZnCo₂O₄ spheres composed by nanoparticles were prepared via constructing a novel zeolitic imidazolate framework (ZIF) sphere with the assistance of citric acid. This hierarchical ZnCo₂O₄ sample presents efficiently enhanced electrochemical property as an anode for a lithium-ion battery due to facilitated electron transfer and improved structural robustness.