journal6 ›› 2011, Vol. 32 ›› Issue (1): 88-92.

• Chemistry and chemical engineering • Previous Articles     Next Articles

Synthesis and Performance of Li(Ni1/3Co1/3Mn1/3)1-xCrxO2 Anode Materials of Lithium-Ion Battery


  1.  (1.Hunan Key Lab of Bio-Tourism Application Technology,Jishou 416000,Hunan China;2.College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan China)
  • Online:2011-01-25 Published:2012-04-10

Abstract: A series of Li(Ni1/3Co1/3Mn1/3)1-xCrxO2 (0≤x≤0.1) samples were prepared as anode materials of lithium-ion battery by using oxalate co-precipitation method.The crystal structure and surface morphologies of the products were analyzed by means of X-ray diffraction(XRD)and scanning electron microscopy (SEM) methods.The electrochemical performance of Li(Ni1/3Co1/3Mn1/3)1-xCrxO2  was evaluated by charge/discharge tests.Results show that Li(Ni1/3Co1/3Mn1/3)1-xCrxO2(x=0.01,0.03,0.05,0.07) keeps bedded structure of α-2NaFeO2 and have cubic structure of phase R3m,The Li(Ni1/3Co1/3Mn1/3)0.95Cr0.05O2 has the best electrochemical performance,an initial discharge capacity of 158.6 mAh/g and the capacity fade is only 3.92 % after 30 cycles of charge-discharge within 2.5~4.5 V.The electrochemical circulation mechanism of the products was analyzed by means of ac impedance methods.Besides,Li(Ni1/3Co1/3Mn1/3)0.95Cr0.05O2 and Li(Ni1/3Co1/3Mn1/3)CrO2  electrodes had different changes of impedance,leading to different effects on the electrochemical performance.

Key words: lithium-ion battery, anode materials, mix, performance

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