The high
compacted density LiNi0.5-xCo0.2Mn0.3MgxO2 cathode material for lithium-ion batteries was synthesized by hightemperature solid-state method, taking the Mg element as a doping
element and the spherical Ni0.5Co0.2Mn0.3(OH)2, Li2CO3 as raw materials. The effects ofcalcination temperature on the structure and
properties of the products were investigated. The structureand morphology of cathode
materials powder were analyzed by X-ray
diffraction spectroscopy (XRD) andscanning
electronmicroscopy (SEM). The electrochemical
properties of the cathode materials were studied bycharge-dischargetest and cyclic
properties test. The results show that LiNi0.4985Co0.2Mn0.3Mg0.0015O2 cathode material prepared at calcination
temperature 930°C has a good layered structure, and the compacted density of the
electrode sheet is above 3.68g/cm3. The discharge capacity retention rate is more than 97.5%
after 100 cycles ata charge-discharge rate of 1C, displayinga good cyclic performance.
References
[1]
Yang, J., Muhammad, S., Jo, M.R., Kim, H., Song, K., Agyeman, D.A., Kim, Y.I., Yoon, W.S. and Kang, Y.M. (2016) In Situ Analyses for Ion Storage Materials. Chemical Society Reviews, 45, 5717-5770. https://doi.org/10.1039/C5CS00734H
[2]
Zhang, H., Zhao, H., Khan, M.A., Zou, W., Xu, J., Zhang, L. and Zhang, J. (2018) Recent Progress in Advanced Electrode Materials, Separators and Electrolytes for Lithium Batteries. Journal of Materials Chemistry, A6, 20564-20260.
https://doi.org/10.1039/C8TA05336G
[3]
Myung, S.T., Maglia, F., Park, K.J., Yoon, C.S., Lamp, P., Kim, S.J. and Sun, Y.K. (2016) Nickel-Rich Layered Cathode Materials for Automotive Lithium-Ion Batteries: Achievements and Perspectives. ACS Energy Letters, 2, 196-223.
https://doi.org/10.1021/acsenergylett.6b00594
[4]
Liu, Z., Yu, A. and Lee, J.Y. (1999) Synthesis and Characterization of LiNi1-x-yCox MnyO2 as the Cathode Materials of Secondary Lithium Batteries. Journal of Power Sources, 81-82, 416-419. https://doi.org/10.1016/S0378-7753(99)00221-9
[5]
Tsutomu, O. and Yoshinari, M. (2001) Novel Lithium Insertion Material of LiCo1/3Ni1/3Mn1/3O2 for Advanced Lithium-Ion Batteries. Chemistry Letters, 30, 642-643.
https://doi.org/10.1246/cl.2001.642
[6]
Zhuang, G.V., Chen, G.Y., Shim, J.P., Song, X.Y. and Ross, P.N. (2004) Li2CO3 in LiNi0.8Co0.15Al0.05O2 Cathodes and Its Effects on Capacity and Power. Journal of Power Sources, 134, 293-297. https://doi.org/10.1016/j.jpowsour.2004.02.030
[7]
Noh, M.J., Lee, Y. and Cho, J.J. (2006) Water Adsorption and Storage Characteristics of Optimized LiCoO2 and LiNi1/3CO1/3Mn1/3O2 Composite Cathode Material for Li-Ion Cells. Journal of the Electrochemical Society, 153, A935-A940.
[8]
Shizuka, K., Kiyohara, C., Shima, K. and Takeda, Y. (2007) Effect of CO2 on Layered Li1+zNi1-x-yCoxMyO2 (M = Al, Mn) Cathode Materials. Journal of Power Sources, 166, 233-238. https://doi.org/10.1016/j.jpowsour.2007.01.013
[9]
Xiong, X.H., Wang, Z.X., Yue, P., Guo, H.J., Wu, F.X., Wang, J.X. and Li, X.H. (2013) Washing Effects on Electrochemical Performance and Storage Characteristics of LiNi0.8Co0.1Mn0.1O2 as Cathode Material for Lithium-Ion Batteries. Journal of Power Sources, 222, 318-325. https://doi.org/10.1016/j.jpowsour.2012.08.029
[10]
Xiong, X.H., Ding, D., Bu, Y., Wang, H.X., Huang, B., Guo, H.J. and Li, X.H. (2014) Enhanced Electrochemical Properties of a LiNiO2-Basedcathode Material by Removing Lithium Residues with (NH4)2HPO4. Journal of Materials Chemistry A, 2, 11691-11696. https://doi.org/10.1039/C4TA01282H
[11]
Wu, F., Tian, J., Su, Y.F., Wang, J., Zhang, C.Z., Bao, L.Y., He, T., Li, J.H. and Chen, S. (2015) Effect of Ni2+ Content on Lithium/Nickel Disorder for Ni-Rich Cathode Materials. ACS Applied Materials & Interfaces, 7, 7702-7708.
https://doi.org/10.1021/acsami.5b00645
[12]
Xiao, P., Lv, T.J., Chen, X.P. and Chang, C.K. (2017) LiNi0.8Co0.15Al0.05O2: Enhanced Electrochemical Performance from Reduced Cationic Disordering in Li Slab. Scientific Reports, 7, 1408-1415. https://doi.org/10.1038/s41598-017-01657-9
[13]
Ohzuku, T., Ueda, A. and Nagayama, M. (1993) Electrochemistry and Structural Chemistry of LiNiO2 (R3m) for 4 Volt Secondary Lithium Cells. Journal of the Electrochemical Society, 140, 1862-1870. https://doi.org/10.1149/1.2220730