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Synthesis and Characterization of Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2(M=Fe,Mg,Al) Particle by Aerosol Process

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Abstract:

Spherical Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2 (M=Fe, Mg, Al) precursor powders were synthesized by ultrasonic spray pyrolysis using aqueous solution of metal nitrate. X-ray diffraction (XRD), scanning electron microscope (SEM), BET method using N2 adsorption analysis and Battery tester were used for determination of the composition, morphology, particle size, surface area and electrochemical properties. SEM observation showed that the size of as-prepared particles were about 0.9 μ with narrow size distribution. The crystal phase of Li[Ni(1/3-x)Mn(1/3-x)Co(1/3-x)Mx]O2 (M=Fe, Mg, Al) was resulted in layered rock salt structure with R3m space group by calcinations at 1023 K for 10 h. No impurity-related peaks are observed from the XRD pattern with various doping metals. Mg and Al doped Li(Ni1/3Co1/3Mn1/3)O2 showed very good cycling stability. The Mg substitution for Ni led to the most excellent. On the other hand, the capacity degradation during cycling was observed by Fe substitution for Mn doped Li(Ni1/3Co1/3Mn1/3)O2.

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Periodical:

Key Engineering Materials (Volume 350)

Pages:

203-206

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.350.203

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Online since:

October 2007

Authors:

Kenichi Myoujin, Takashi Ogihara, Koji Nakane, Nobuo Ogata

Keywords:

Cathode Material, Cycling Stability, Li[Ni1/3Co1/3Mn1/3]O2, Secondary Lithium Battery, Spray Pyrolysis

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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