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Electrochemical properties of LiNi0.8Co0.1Mn0.1O2 synthesized by sol-gel and co-precipitation methods

Mai Thanh Tung, Vu Duc Luong

Abstract


Layered LiNi0.8Co0.1Mn0.1O2 cathode materials have been prepared by sol-gel and co-precipitation methods. The structural, morphological and electrochemical properties of the materials were compared. The XRD patterns show that both the sol–gel and the co-precipitation method formed single phase materials with good layered characteristics. Electrochemical tests indicate that the material prepared by the co-precipitation method has slightly better electrochemical properties, with an initial discharge capacity of 185 mAhg−1 and capacity retention of 96.85 % after 50 cycles at a cycling rate of 1.0 C, as well as better capability at 7 C. The improved performances of the co-precipitation synthesized material may be attributed to the low Li/Ni disorder.

Keywords


Lithium ion batteries, Ni-rich material, co-precipitation, LiNi0.8Co0.1Mn0.1O2, co-precipitation, sol-gel method.

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