Synthesis and Characterization of Cu Doped LiCoO2 Cathode Material for Lithium Batteries Using Microwave Assisted Sol-Gel Synthesis



LiCoO2 is the most studied cathode material for lithium batteries. The doping effect gives a better cycle life in such materials. Apart from the doping effect, the preparation technique also plays an important role. Presently, the layer structured Cu doped LiCoO2 cathode material has been prepared via microwave assisted sol gel route; better cycle life and capacity retention have been attained. It was found that this method could reduce the synthesis time to 30 minutes. The espousal of the microwave method in synthesis could develop a highly efficient, low cost process for synthesis. The surface morphology of the material has been observed using SEM and it is inhomogeneous in nature. The capacity retention is higher than that of pure LiCoO2 material. Compositional analysis was made through EDX. The Cu doped material has a voltage plateau about 4.0V which is obtained from the cyclic voltammetry.




D. Rajan Babu




P. Prahasini et al., "Synthesis and Characterization of Cu Doped LiCoO2 Cathode Material for Lithium Batteries Using Microwave Assisted Sol-Gel Synthesis", Advanced Materials Research, Vol. 584, pp. 345-349, 2012


October 2012




[1] S.M. Lala, L.A. Montoro, V. Lemos, M. Abbate, J.M. Rosolen , The negative and positive structural effects of Ga doping in the electrochemical performance of LiCoO2, Electrochim. Acta 51 (2005) 7–13.


[2] K.Y. Chung, W.S. Yoon, J. McBreen, X. Q. Yang, S.H. Oh, H.C. Shin , W.I. Cho, B.W. Cho, J. Power Sources 174 (2007) 619–623.

[3] Y.S. Jung, A.S. Cavanaugh, A.C. Dillon, M.D. Groner, S.M. George, S.H. Lee, Enhanced Stability of LiCoO2 Cathodes in Lithium-Ion Batteries Using Surface Modification by Atomic Layer Deposition, J. Electrochem. Soc. 157 (2010) A75-A81.


[4] S. Venkatraman, V. Subramanian, S. GopuKumar, N.G. Renganathan, N. Muniyandi, Capacity of layered cathode materials for lithium-ion batteries— a theoretical study and experimental evaluation, Electrochem. Commun. 2 (2000) 18.


[5] S.A. Needham, G.X. Wang, H.K. Liu, V.A. Drozd, R.S. Liu, Synthesis and electrochemical performance of doped LiCoO2 materials, J. Power Sources, 174 (2007) 828–831.


[6] I. Belharouat, W. Lu, D. Vissers, K. Amine, Safety characteristics of Li(Ni0. 8Co0. 15Al0. 05)O2 and Li(Ni1/3Co1/3Mn1/3)O2 , Electrochem. Commun. 8 (2006) 329–335.


[7] C. Nithya, R. Thirunakaran, A. Sivashanmugam, S. Gopukumar, Microwave synthesis of novel high voltage (4. 6 V) high capacity LiCuxCo1−xO2±δ cathode material for lithium rechargeable cells, J. Power Sources, 196 (2011) 6788–6793.


[8] H. Yan, X. Huang, L. Chen, Microwave synthesis of LiMn2O4 cathode material, J. Power Sources, 81 (1999) 647-650.


[9] S.W. Jang, H.Y. Lee, K.C. Shin, S.M. Lee, Synthesis and characterization of spinel LiMn2O4 for lithium secondary battery, J. Power Sources, 88 (2000) 274–277.


[10] S.T. Myung, H.T. Chung, S. Komaba, N. Kumagai, Capacity fading of LiMn2O4 electrode synthesized by the emulsion drying method, J. Power Sources, 90 (2000) 104.


[11] K. Suryakala, KR. Marikkannu, G. Paruthimal Kalaignan, T. Vasudevan, Synthesis and Electrochemical Characterization of LiMn2O4 and LiNd0. 3Mn1. 7O4 as Cathode for Lithium Ion Battery, Int. J. Electrochem. Sci., 3 (2008) 136 – 144.


[12] Paromita Ghosh, S. Mahanty, R.N. Basu, Lanthanum-doped LiCoO2 cathode with high rate capability, Electrochim. Acta 54 (2009) 1654-1661.


[13] M. Antaya, K. Cearns, J.S. Preston, J.N. Reimers, J.R. Dahn, In situ growth of layered, spinel, and rock‐salt LiCoO2 by laser ablation deposition, J. Appl. Phys., 76 (1996) 2799.