Synthesis and Characterization of LiNi0.4Co0.2Mn0.4O2 Cathode Material via Urea Co-Precipitation Method

Sheng Kui Zhong; Yue Bin Xu; Yan Wei Li; Chang Jiu Liu; Yan Hong Li

doi:10.4028/www.scientific.net/AMR.295-297.700

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 295-297Synthesis and Characterization of...

Synthesis and Characterization of LiNi_0.4Co_0.2Mn_0.4O₂ Cathode Material via Urea Co-Precipitation Method

Abstract:

LiNi_0.4Co_0.2Mn_0.4O2 sampleswas synthesized via urea co-precipitation method. The XRD, SEM and electrochemical measurements were used to examine the structure,morphology and electrochemical characteristics, respectively. LiNi_0.4Co_0.2Mn_0.4O2 powders show excellent electrochemical performances. The optimum sintering temperature and sintering time are 800°C and 20 h, respectively. The LiNi_0.4Co_0.2Mn_0.4O2 powders shows the discharge capacity of 145.1 mAh·g^-1 in the range of 3.0-4.5 V at the first cycle, and the discharge capacity remains 132.3 mAh·g^-1 after 30 cycles. The urea co-precipitation method is suitable for the preparation of LiNi_0.4Co_0.2Mn_0.4O2 cathode materials with good electrochemical performances for lithium ion batteries.