Synthesis of LiNi_1/3Co_1/3Mn_1/3O₂ Composite Powders by Solid State Reaction

Abstract:

A mixture of Li2CO3, NiO, Co2O3 and MnO2 with a molar ratio was introduced in the mixed high energy ball milling, LiNi1/3Co1/3Mn1/3O2 was prepared by solid state phase using mechanochemical activation which has highly reactive materials. The structure and electrochemical properties of LiNi1/3Co1/3Mn1/3O2 were analisised by employing X-ray diffraction(XRD), scanning electron microscopy(SEM) and galvanotactic charge-discharge test. Charge-discharge test results show that when the the LiNi1/3Co1/3Mn1/3O2 cathode was prepared by wet milling 10h between 2.8 V and 4.4V at a current of 0.5C rate, the initial discharge capacity is 135.1mAh/g, the capacity retention rate of 93.26% after 20 cycles. When nLi: n (Ni + Co + Mn) = 1.1, the samples sintered 20h at 850 °C, the first discharge capacity is 148.5 mAh/g, and the capacity retention rate is 94.88% after 40 cycles.

• Periodical: Advanced Materials Research (Volume 158)
• Pages: 262-272
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.158.262
• Online since: November 2010
• Authors: Li Zhang, Pei Xin Zhang, Zhen Zhen Fan, Xiang Zhong Ren, Dong Yun Zhang, Kun Liu
• Keywords: Cathode Material, LiNi_1/3Co₁₃Mn_1/3O₂, Lithium-Ion Battery, Solid-State Reaction

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