Effect of Neodymium and Yttrium oxides on the Structural and Electrochemical Properties of LiFePO4/C Composite as Cathode of lithium ion Batteries Synthesized by Solid State Method

Subject Areas : journal of New Materials

M.A. Omodifard ¹ , Babak Hashemi ² , Mohsen Babaiee ³

1 - Materials Dept. of Shiraz university
2 - Prof. of Materials Dept.
3 - Researcher/ Iranian space research center

Received: 2021-04-30 Accepted : 2021-05-10 Published : 2021-02-19

Keywords: "Electrochemical", " LiFePO4", " Lithium Ion Battery", "Neodymium", " Solid State",

Abstract :

Rechargeable batteries such as lithium ion batteries have been used in various industries. In these batteries, the important issue is high energy and power density. One of the important factors affecting this issue is cathode material. LiFePO4/C has been interested as an excellent compounds in recent years. In this study, LiFePO4/C was synthesized by solid state method from raw materials (NH4) H2PO4, FeC2O4.2H2O, Li2CO3 and super pure carbon and in order to improve the weak diffusion of lithium ion and increase the battery capacity at high charge/discharge rates, yttrium and neodymium were added to the LiFePO4/C composite. In this study, TGA-DTA analysis was used to investigate the reaction temperatures of the raw materials and also to determine the synthesis temperature of the compound. SEM images were used to study the microstructure and morphology of the particles and impedance, cycling and cyclic voltammetry tests were used to investigate the electrochemical behavior of the samples. According to the results of this study, it was found that two-step synthesis of the doped samples with yttrium and neodymium ions improves ionic and electrical conductivity of the samples. From the samples synthesized with different percentages of yttrium and neodymium, LiFe99.54Y0.4Nd0.06PO4/C sample with the best electrochemical performance and maximum capacity (113 mAh/g) was selected as the optimal sample.

References:

Arico, A. S., Bruce, P., Scrosati, B., Tarascon, J.-M., & Van Schalkwijk, W. (2011). Nanostructured materials for advanced energy conversion and storage devices. In Materials for sustainable energy: a collection of peer-reviewed research and review articles from Nature Publishing Group (pp. 148-159): World Scientific.

 

Palacin, M. R. J. C. S. R. (2009). Recent advances in rechargeable battery materials: a chemist’s perspective. 38(9), 2565-2575.

Zhang, G. Q., Wu, H. B., Hoster, H. E., Chan-Park, M. B., Lou, X. W. D. J. E., & Science, E. (2012). Single-crystalline NiCo₂O₄ nanoneedle arrays grown on conductive substrates as binder-free electrodes for high-performance supercapacitors. 5(11), 9453-9456.

Scrosati, B., & Garche, J. J. J. o. p. s. (2010). Lithium batteries: Status, prospects and future. 195(9), 2419-2430

Wakihara, M. J. M. S., & Reports, E. R. (2001). Recent developments in lithium ion batteries. 33(4), 109-134 

Fu, L., Liu, H., Li, C., Wu, Y., Rahm, E., Holze, R., & Wu, H. J. P. i. M. S. (2005). Electrode materials for lithium secondary batteries prepared by sol–gel methods. 50(7), 881-928.  

Bruce, P. G., Freunberger, S. A., Hardwick, L. J., & Tarascon, J.-M. J. N. m. (2012). Li–O₂ and Li–S batteries with high energy storage. 11(1), 19.

Wang, L., Liang, G., Ou, X., Zhi, X., Zhang, J., & Cui, J. (2009). Effect of synthesis temperature on the properties of LiFePO₄/C composites prepared by carbothermal reduction. Journal of Power Sources, 189(1), 423-428. 

 Delacourt, C., Poizot, P., Levasseur, S., Masquelier, C. J. E., & Letters, S. S. (2006). Size effects on carbon-free LiFePO4 powders: The key to superior energy density. 9(7), A352.

Fey, G. T.-K., Chen, Y. G., & Kao, H.-M. J. J. o. P. S. (2009). Electrochemical properties of LiFePO4 prepared via ball-milling. 189(1), 169-178.

  Kang, B., & Ceder, G. J. N. (2009). Battery materials for ultrafast charging and discharging. 458(7235), 190-193.

Chung, S.-Y., Bloking, J. T., & Chiang, Y.-M. (2002).Electronically conductive phospho-olivines as lithium storage electrodes. Nature materials, 1(2), 123-128.

Wen, Y., Zeng, L., Tong, Z., Nong, L., & Wei, W. (2006). Structure and properties of LiFe₀V_{0. 1}PO₄. Journal of alloys and compounds, 416(1-2), 206-208

Roberts, M. R., Vitins, G., & Owen, J. R. J. J. o. P. S. (2008). High-throughput studies of Li_{1− x}Mg_x/2FePO₄ and LiFe_{1− y}Mg_yPO₄ and the effect of carbon coating. 179(2), 754-762.

Teng, T.-H., Yang, M.-R., Wu, S.-h., & Chiang, Y.-P. J. S. S. C. (2007). Electrochemical properties of LiFe₀₉Mg_{0. 1}PO₄/carbon cathode materials prepared by ultrasonic spray pyrolysis. 142(7), 389-392.

Yang, R., Song, X., Zhao, M., Wang, F. J. J. o. A., & Compounds. (2009).Characteristics of Li_0.98Cu_0.01FePO₄ prepared from improved co-precipitation. 468(1-2), 365-369.

 

Zhang, W.-J. (2011). Structure and performance of LiFePO₄ cathode materials: A review. Journal of Power Sources, 196(6), 2962-2970.

 

Doeff, M. M., Wilcox, J. D., Kostecki, R., & Lau, G. J. J. o. p. s. (2006). Optimization of carbon coatings on LiFePO₄. 163(1), 180-184

Kadoma, Y., Kim, J.-M., Abiko, K., Ohtsuki, K., Ui, K., & Kumagai, N. J. E. A. (2010). Optimization of electrochemical properties of LiFePO₄/C prepared by an aqueous solution method using sucrose. 55(3), 1034-1041.

Lin, Y., Gao, M., Zhu, D., Liu, Y., & Pan, H. J. J. o. P. S. (2008). Effects of carbon coating and iron phosphides on the electrochemical properties of LiFePO₄/C. 184(2), 444-448.

Needham, S., Calka, A., Wang, G., Mosbah, A., & Liu, H. J. E. c. (2006). A new rapid synthesis technique for electrochemically active materials used in energy storage applications. 8(3), 434-438.

Sanchez, M., Brito, G., Fantini, M., Goya, G., & Matos, J. J. S. S. I. (2006). Synthesis and characterization of LiFePO₄ prepared by sol–gel technique. 177(5-6), 497-500.

Jugović, D., & Uskoković, D. J. J. o. P. S. (2009). A review of recent developments in the synthesis procedures of lithium iron phosphate powders. 190(2), 538-544.

Wu, B., Ren, Y., & Li, N. (2011). LiFePO₄ cathode material. Electric Vehicles-The Benefits and Barriers, 199-216.

Islam, M. S., Driscoll, D. J., Fisher, C. A., & Slater, P. R. J. C. o. M. (2005). Atomic-scale investigation of defects, dopants, and lithium transport in the LiFePO₄ olivine-type battery material. 17(20), 5085-5092.

Yanwen, T., Xiaoxue, K., Liying, L., Chaqing, X., & Tao, Q. J. J. o. R. E. (2008). Research on cathode material of Li-ion battery by yttrium doping. 26(2), 279-283.

Zhao, X., Tang, X., Zhang, L., Zhao, M., & Zhai, J. J. E. a. (2010). Effects of neodymium aliovalent substitution on the structure and electrochemical performance of LiFePO₄. 55(20), 5899-5904.

 

Herrera, F., Fuenzalida, F., Marquez, P., & Gautier, J. J. M. C. (2017). Improvement of the electrochemical performance of LiFePO₄ cathode by Y-doping. 7(3), 515-522.

 

Krishnan, S. G., Ab Rahim, M. H., Jose, R. J. J. o. A., & Compounds. (2016). Synthesis and characterization of MnCo2O4 cuboidal microcrystals as a high performance pseudo capacitor electrode. 656, 707-713