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Issue 8, 1997
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Synthesis of LiCo0.5Ni>0.5O2 powders by a sol–gel method


Layered HT (high temperature)-LiCo 0.5 Ni 0.5 O 2 powders, which are of potential interest as cathode materials for lithium secondary batteries, have been synthesized by a sol–gel method using poly(acrylic acid) (PAA) as a chelating agent. This method provided a variety of advantages of the processing conditions over the conventional solid-state reaction method. High-quality polycrystalline HT-LiCo 0.5 Ni 0.5 O 2 powders of very uniformly sized particulates with an average particle size of 0.4–2 µm could be conveniently obtained at a comparatively low calcination temperature of 600 °C and short calcination time of 1 h in air. An electrochemical study showed that the LiCo 0.4 Ni 0.5 O 2 powders had high capacity and good cycling behaviour for lithium secondary batteries.

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Article information

J. Mater. Chem., 1997,7, 1481-1485
Article type

Synthesis of LiCo0.5Ni>0.5O2 powders by a sol–gel method

Y. Sun, I. Oh and K. Yul Kim, J. Mater. Chem., 1997, 7, 1481
DOI: 10.1039/A607550I

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