Investigation on Structure and Electrochemical Properties of Li[Ni1/3Co1/3Mn1/3]O2 for Lithium Ion Batteries

Abstract:

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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.

Info:

Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

455-458

DOI:

10.4028/www.scientific.net/KEM.336-338.455

Citation:

X. J. Shi et al., "Investigation on Structure and Electrochemical Properties of Li[Ni1/3Co1/3Mn1/3]O2 for Lithium Ion Batteries", Key Engineering Materials, Vols. 336-338, pp. 455-458, 2007

Online since:

April 2007

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$35.00

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