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Electrochemical Characterization of Zn-Doped LiNiMnCoO2 Cathode Materials for Li-Ion Battery
Corresponding Author(s) : D. Deivamani
Asian Journal of Chemistry,
Vol. 29 No. 8 (2017): Vol 29 Issue 8
Abstract
This article mainly discusses on the performance of the layered Zn doped LiNi0.3Mn0.3Co0.3O2 positive electrode material for lithium ion battery. Zinc is substituted in place of Co to synthesize samples of Zn-doped LiNi0.3Mn0.3Co0.3-xO2 (x = 0.00, 010, 0.02) cathode materials. Zinc substituted LiNi0.3Mn0.3Co0.3-xO2 positive active materials for lithium ion battery were synthesized by sol-gel procedure using metal acetates as starting material. The surface orientation, structure and electrochemical performance of calcined positive electrode materials were examined by scanning electron microscope, X-ray diffraction, electrochemical impedance spectroscopy and galvanostatic charge/discharge. The resistance components were derived from the impedance spectra and compared with discharge characteristics for a better performance. The cathode materials demonstrate a homogeneously distributed spherical morphology and exhibit a good reversibility. The Zn doped LiNi0.3Mn0.3Co0.29Zn0.01O2 cathode material synthesized at 1000 °C exhibits a high discharge capacity of 183.18 mAh/g at c/5 rate and offers better capacity retention of 85.47 % after formation cycles compared with the un-doped cathode material. The excellent cycle life performance can be attributed to the improvement in structure stability and lower resistance values which enhances the reaction kinetics.
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- D. Deivamani and P. Perumal, Int. J. Chem. Sci., 14, 496 (2016).
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References
M. Choi, G. Ham, B.-S. Jin, S.-M. Lee, Y.M. Lee, G. Wang and H.-S. Kim, J. Alloys Comp., 608, 110 (2014); https://doi.org/10.1016/j.jallcom.2014.04.068.
Y. Zeng, K. Qiu, Z. Yang, F. Zhou, L. Xia and Y. Bu, Ceram. Int., 42, 10433 (2016); https://doi.org/10.1016/j.ceramint.2016.03.189.
X. Zhang, W.J. Jiang, A. Mauger, F. Qilu, F. Gendron and C.M. Julien, J. Power Sources, 195, 1292 (2010); https://doi.org/10.1016/j.jpowsour.2009.09.029.
H. Lee, D.J. Lee, Y.-J. Kim, J.-K. Park and H.-T. Kim, J. Power Sources, 284, 103 (2015); https://doi.org/10.1016/j.jpowsour.2015.03.004.
Y. Chen, R. Chen, Z. Tang and L. Wang, J. Alloys Comp., 476, 539 (2009); https://doi.org/10.1016/j.jallcom.2008.09.055.
R. Guo, P. Shi, X. Cheng and L. Sun, Electrochim. Acta, 54, 5796 (2009); https://doi.org/10.1016/j.electacta.2009.05.034.
P. Suresh, A.K. Shukla and N. Munichandraiah, J. Power Sources, 161, 1307 (2006); https://doi.org/10.1016/j.jpowsour.2006.06.098.
C. Deng, S. Zhang, S.Y. Yang, B.L. Fu and L. Ma, J. Power Sources, 196, 386 (2011); https://doi.org/10.1016/j.jpowsour.2010.06.064.
R. Santhanam and B. Rambabu, Int. J. Electrochem. Sci., 4, 1770 (2009).
D. Deivamani and P. Perumal, Int. J. Chem. Sci., 14, 496 (2016).
W. Ahn, S.N. Lim, K.-N. Jung, S.-H. Yeon, K.B. Kim, H.S. Song, K.-H. Shin, J. Alloys Comp., 609, 143 (2014); https://doi.org/10.1016/j.jallcom.2014.03.123.
L. Zhang, K. Jin, L. Wang, Y. Zhang, X. Li and Y. Song, J. Alloys Comp., 638, 298 (2015); https://doi.org/10.1016/j.jallcom.2015.03.100