The Li-rich materials, Li1.2Mn0.54NixCoyO2, was synthesized by aerogel with urea as chelating agent.
Li1.2Mn0.54Ni0.195Co0.065O2 delivered a high discharge capacity of 313 mA h g−1 at 20 mA g−1.
Li1.2Mn0.54Ni0.195Co0.065O2 had high layered structure and less cation mixture.