Nano-grinding derived high-performance Li1.2Ni0.13Co0.13Mn0.54O2 cathode material: from kilogram-scale synthesis to its pouch cell

A Li1.2Ni0.13Co0.13Mn0.54O2 cathode material is prepared by a kilogram-scale carbonate co-precipitation method assisted with nano-grinding. Uniform hierarchical structure with nano-scale building blocks and low mixing degree of lithium and nickel are achieved. The obtained Li1.2Ni0.13Co0.13Mn0.54O2 cathode material shows high initial Coulombic efficiency and capacity delivery, attractive cycling stability, and high rate performance. At 1 C and 25 °C, it presents a higher discharge capacity of 266.3 mAh g−1, and the capacity retention rates are 97.7% after 300 cycles and 92.8% after 500 cycles, respectively. Excellent high rate discharge capacities of 252.0 and 113.3 mAh g−1 are obtained at 1 and 30 C, respectively. In addition, outstanding temperature dependency discharge capacities are gained. The pouch-type full cell fabricated by this cathode and graphite anode exhibits good cycling performance with 85.5% capacity retention after 350 cycles at 5 mA.