Synthesis and Electrochemical Properties of Modification LiNi1/3Co1/3Mn1/3O2 Cathode Materials for Li-ion Battery

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Abstract:

The layered LiNi1/3Co1/3Mn1/3–x Mg x O2 (x = 0, 0.01, 0.03, 0.05) cathode materials were prepared by solid state reaction, then copper oxide was coated on the product. The structures, morphologies and electrochemical properties of the LiNi1/3Co1/3Mn1/3–x Mg x O2 and CuO-coated LiNi1/3Co1/3Mn1/3–x Mg x O2 were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM), and electrochemical tests. The results showed that the electrochemistry properties and cycle performance of magnesium doped LiNi1/3Co1/3Mn1/3O2 and CuO-coated LiNi1/3Co1/3Mn1/3–x Mg x O2 materials were improved. The optimal doping content of Mg was x = 0.03 in the LiNi1/3Co1/3Mn1/3–x Mg x O2 samples to achieve high discharge capacity and good cyclic stability, and the first discharge special capacity was 158.5 mAh/g at 0.2 C in the voltage of 2.5–4.3 V, then CuO-coated LiNi1/3Co1/3Mn1/3–0.03Mg0.03O2 was investigated. The electrode reaction reversibility and electronic conductivity were enhanced through Mg-doped and CuO-coated.

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2012.6135

Publication date: March 1, 2012

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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