Formation of uniform nitrogen-doped C/Ni/TiO2 hollow spindles toward long cycle life lithium-ion batteries

Abstract

Uniform nitrogen-doped C/Ni/TiO₂ hollow spindles were successfully prepared with Ni nanoparticles encapsulated into the hollow N-doped TiO₂/C matrix. This intriguing architecture not only exhibits favorable conductivity, but also provides a large quantity of accessible active sites for lithium ion insertion, thus contributing to superior lithium storage properties.