Ultrasonic/microwave-assisted co-precipitation method in the synthesis of Li1.1Mn0.433Ni0.233Co0.233O2 cathode material for lithium-ion batteries

• A novel ultrasonic/microwave assisted co-precipitation method was proposed to synthesize lithium-rich material.
• We compared the as-prepared sample with that from traditional co-precipitation method.
• The sample shows better performances.

Ultrasonic/microwave-assisted co-precipitation method (UMCP) is proposed to synthesize lithium-rich material, Li1.1Mn0.433Ni0.233Co0.233O2. The synthesized precursors from UMCP were denser, and the final products showed improved crystallinity, as well as lower cation disordering, caused by the homogeneous dispersed reagents introduced by the ultrasonic effect, resulting in higher discharge capacity and better cycling performance compared with those from traditional co-precipitation method. The sample synthesized by UMCP exhibited a capacity of 260 mAh g−1 at 0.1 C charge/discharge rate and 207 mAh g−1 after 50 cycles, while the discharge capacity of the control sample was only 212 mAh g−1 for the first cycle and 180 mAh g−1 after 20 cycles.

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