Synthesis of N-doped carbon coated metal oxide nanoparticles for enhanced Li-ion storage ability

A new kind of metal oxide nanoparticle coated with a uniform layer of N-doped carbon (e.g., Fe3O4@CNy, CoOx@CNy) was prepared readily in one-step. The nanoparticles show a high and stable lithium storage ability for lithium-ion battery applications.