Removal of Organic Impurities in Lithium Cobalt Oxide from Spent Lithium Ion Batteries by Ultrasonic Irradiation

Abstract:

In the present work, spent LiCoO₂ was processed to remove impurities by ultrasound with the aim to renovate its electrochemical characteristics. The composition and amount of organic materials remained in the LiCoO₂ particle surface were characterized by GC-MS, FT-IR and TGA, respectively. The morphology and particle sizes of PVDF (Polyvinylidene fluoride) was analyzed by SEM. Experimental results show that ultrasonic cavitation could be effectively used to remove organic substance stuck on LiCoO₂ surface. At room temperature, the spent LiCoO₂ was successfully remove impurities, including EC (Ethylene carbonate) and PVDF, with ultrasound applied for 12 h. It can be considered that most of the PVDF (82.0 wt.%) has decomposed under ultrasonic irradiation. Furthermore, the EC has completely decomposed under such ultrasonic irradiation.

• Periodical: Advanced Materials Research (Volumes 864-867)
• Pages: 1937-1940
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.864-867.1937
• Online since: December 2013
• Authors: Shu Guang Zhu*, Wen Zhi He
• Keywords: LiCoO₂, Polyvinylidene Fluoride, Spent Lithium Ion Batteries, Ultrasonic Irradiation

References

[1] D.I. Ra and K.S. Han: Journal of Power Sources. Vol. 163 (2006), p.284.

[2] M. Bahgat, F.E. Farghaly, S.M. Abdel Basir and O.A. Fouad: Journal of Materials Processing Technology. Vol. 183 (2007), p.117.

[3] Y.J. Liu, Q.Y. Hu, X.H. Li, Z.X. Wang, and H.J. Guo: Transactions of Nonferrous Metals Society of China. Vol. 16 (2006), p.956.

[4] S.M. Shin, N.H. Kim, J.S. Sohn, D.H. Yang and Y.H. Kim: Hydrometallurgy. Vol. 79 (2005), p.172.

[5] M. Contestabile, S. Panero and B. Scrosati: Journal of Power Sources. Vol. 92 (2001), p.65.

[6] C.K. Lee and K.I. Rhee: Hydrometallurgy. Vol. 68 (2003), p.5.

[7] B. Swain, J. Jeong, J.C. Lee and G.H. Lee: Separation and Purification Technology. Vol. 63 (2008), p.360.

[8] S. Catillo, F. Ansart, C. Laberty-Robert and J. Portal: Journal of Power Sources. Vol. 112 (2002), p.247.

[9] D.P. Mantuano, G. Dorell, R.C.A. Elia and M.B. Mansur: Journal of Power Sources. Vol. 159 (2006), p.1510.

[10] D.S. Kim, J.S. Sohn, C.K. Lee, J.H. Lee, K.S. Han and Y.I. Lee: Journal of Power Sources. Vol. 132 (2004), p.145.

[11] S.G. Zhu, W.Z. He, G.M. Li, X. Zhou, H.K. Hu and J.W. Huang: Fresenius Environmental Bulletin. Vol. 21(2012), p.1752.

[12] J.G. Li, R.S. Zhao, X.M. He and H.C. Liu: Ionics. Vol. 15 (2009), p.111.

[13] J.H. Li, P.X. Shi, Z.F. Wang, Y. Chen and C.C. Chang: Chemosphere. Vol. 77 (2009), p.1132.

[14] J.S. Bok, J.H. Lee, B.K. Lee, D.P. Kim, J.S. Rho, H.S. Yang and K.S. Han: Solid State Ionics. Vol. 169 (2004), p.139.

[15] T.J. Mason: Chemical Society Reviews. Vol. 26 (1997), p.443.