Investigation on Structure and Electrochemical Properties of Li[Ni_1/3Co_1/3Mn_1/3]O₂ for Lithium Ion Batteries

Abstract:

Cathode material Li[Ni1/3Co1/3Mn1/3]O2 for lithium-ion batteries with layered hexagonal structure was successfully synthesized in sol-gel way. The influences of calcination temperature (from 700° to 1000°C) on the structure and electrochemical behaviors of Li[Ni1/3Co1/3Mn1/3]O2 were extensively investigated. The results of XRD show that all samples are isostructural with α-NaFeO2 with a space group R-3m. XPS analysis shows that the oxidation states of Co and Mn were Co3+ and Mn4+ respectively, while Ni exists as Ni2+ and Ni3+. The charge-discharge experiments show that the sample calcined at 850°C delivers 194.8mAh/g in the first cycle at C/5 rate in 2.5-4.3V potential range.

• Periodical: Key Engineering Materials (Volumes 336-338)
• Pages: 455-458
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.336-338.455
• Online since: April 2007
• Authors: Xiu Juan Shi, Yong Ping Zheng, Fei Yu Kang, Xin Lu Li, Wan Ci Shen
• Keywords: Cathode Material, Li[Ni_1/3Co_1/3Mn_1/3]O₂, Lithium-Ion Battery

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