Preparation and Performance Study of Li_1.02(Fe_0.8Mn_0.2)PO₄/C by Ti Doping

Abstract:

Ti dopping Li_1.02(Fe_0.8Mn_0.2)PO₄/C (Ti=0.01,0.03,0.05,0.07) was prepared by high temperature solid-state method ,with LiH₂PO₄, LiCO₃, FeC₂O₄.2H₂O , Mn (CH₃COOH)₂.4H₂O TiO₂ as raw materails. Glucose (C₆H₁₂O₆) as carbon soures join in the mixture when ball milling. The structure and morphology of the samples were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). CHI660B electrochemical workstation was used to study the electrochemical performance of cathode material. The well-crystallized LiFePO4/C composite with homogeneous small particles was obtained after reacting at 700°C for 10h.

• Periodical: Advanced Materials Research (Volume 1035)
• Pages: 58-61
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1035.58
• Online since: October 2014
• Authors: Rui He, Zhen Fa Liu*, Li Hui Zhang, Yan Liang Zhang
• Keywords: Cathode Materials, Lithium Batteries, Solid-Phase Method, Ti-Doping

References

[1] Padhi, A. K.; Nanjundaswamy, K. S.; Goodenough, J.B. J. Eletrochem. Soc. 1997, 144, 1188. doi: 10. 1149/1. 1837571.

[2] Padhi, A. K.; Nanjundaswamy, K. S.; Masquelier,C.; Okada, S.; Goodenough, J.B.J.; Electrochem. Soc. 1997, 144, 1609.

[3] Goodenough, J.B.; Kim, Y. Chem. Mater. 2010, 22, 587. doi: 10. 1021/cm901452.

[4] Y. Lu, J. Shi, Z. Guo, Q. Tong, W. Huang, B. Li, J. Power Sources 194 (2009) 786–793.

[5] W. -J. Zhang, J. Power Sources 196 (2011) 2962–2970.

[6] S. -Y. Chung, J.T. Bloking, Y.M. Chiang, Nat. Mater. 1 (2002) 123–128.

[7] M. -H. Lee, J. -Y. Kim, H. -K. Song, Chem. Commun. 46 (2010) 6795–6797.

[8] Y. -S. Hu, Y. -G. Guo, R. Dominko, M. Gaberscek, J. Jamnik, J. Maier, Adv. Mater. 19 (2007) 1963–(1966).

DOI: 10.1002/adma.200700697

[9] N. Ravert, Y. Chouinard, J.F. Magnan, S. Besner, M. Gauthier, M. Armand, J. Power Sources 97–98 (2001) 503–507.

DOI: 10.1016/s0378-7753(01)00727-3

[10] Maier, J.; Amin, R. J. Electrochem. Soc. 2008, 155, A339.