Li-Rich Layered Cathode Material Li[Li0.157Ni0.138Co0.134Mn0.571]O2 Synthesized with Solid-State Coordination Method

Lithium-rich layered material Li[Li0.157Ni0.138Co0.134Mn0.571]O2 was prepared with the solid-state coordination method. Lithium nitrate, nickel acetate, cobalt acetate, and manganese acetate were used as raw materials, and citric acid as solid complexing agent. The lithium-rich layered material was prepared by heat-treating the precursors of the solid-phase complex compound. The prepared materials exhibited typical layer structure, nanosize distribution, and excellent electrochemical performance, and the preparation process has the advantages of low cost and simplicity. The initial discharge capacity of the prepared material reached as high as 270 mAh/g, and the charge-transfer resistance of the electrode was about 165 Ω at 4.0 V.