Synthesis and Characterization of Spinel LiNi_0.5Mn_1.3Ti_0.2O₄

Abstract:

Pure spinel phase LiNi_0.5Mn_1.3Ti_0.2O₄ is synthesized. A mixture of LiAc•2H₂O, Mn(Ac)₂•2H₂O, Ni(Ac)₂•4H₂O and Ti(OCH₃)₄ is used as starting material. Ethanol and citric acid are also added. The calcining process is carried out at 900 °C for 4 h. It is then followed by a thermostatic process at 600 °C for 6 h. XRD analyses indicate that the product LiNi_0.5Mn_1.3Ti_0.2O₄ is formed with F3dm structure. The SEM image shows that the particle sizes of product LiNi_0.5Mn_1.3Ti_0.2O₄ are 0.5-2 um. It exhibites excellent electrochemical performance. The discharge capacity of product cycled at 1 C (148 mA g⁻¹) rate is about 130.2 mAh g⁻¹ in the voltage range 3.5–4.9 V (versus Li⁺/Li) and the capacity retention is about 97% at the 50th cycle.

• Periodical: Advanced Materials Research (Volumes 391-392)
• Pages: 904-907
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.391-392.904
• Online since: December 2011
• Authors: Guo Qiang Liu, Xi Wang, Guang Yin Liu, Bei Yue Ma
• Keywords: Cathode Material, Electrochemical Property, High Voltage (HV), Lithium-Ion Battery, Self-Propagating Combustion Synthesis

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