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Layered lithium-rich Li[Li0.2Ni0.13Co0.13Mn0.54]O2 cathode materials prepared by different methods and its electrochemical properties

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Author(s): Jingliang Wang | Qichan Xiao | Jingjing Yu | Wenbo Nie | Zhaohui Li

Journal: Scientific Journal of Frontier Chemical Development
ISSN 2167-163X

Volume: 2;
Issue: 4;
Start page: 81;
Date: 2012;
Original page

Keywords: Lithium-Ion Batteries | Li[Li0.2Ni0.13Co0.13Mn0.54]O2 | Sol-Gel | Co-Precipitation | Ball-Milling | Electrochemical Performance

ABSTRACT
In this work, the layered lithium-rich Li[Li0.2Ni0.13Co0.13Mn0.54]O2 materials were synthesized by sol-gel, co-precipitation and ball-milling methods followed by calcinations at a high temperature. The crystal structure was analysized through X-ray diffractometry (XRD) and morphology by scanning electron microscopy (SEM). The electrochemical properties of products were studied by cyclic voltammetry (CV) and galvanostatic charge-discharge measurements. The results suggest that the products synthesized by sol-gel and co-precipitation methods have perfect layered crystal structure and display uniform particle size. Their initial discharge capacities are as high as 259 and 255 mAh?g-1 at 0.1C, respectively. However, the product prepared by ball-milling method exhibits lager particle size and unsatisfied electrochemical properties such as its initial discharge capacity of 153 mAh?g-1 at 0.1C.
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