The Influence of Synthetic Temperature on Structure and Performance to LiNi_1/3Co_1/3Mn_1/3O₂

Abstract:

LiNi_1/3Co_1/3Mn_1/3O₂ was prepared by high temperature solid-state method under different synthesis temperature. The structure and morphology of LiNi_1/3Co_1/3Mn_1/3O₂ were characterized by Scanning electron microscopy (SEM) and X-ray diffraction (XRD). Electrochemical performance of the cathode material was researched by Land 2001. XRD and SEM results show that the well-crystallized LiNi_1/3Co_1/3Mn_1/3O₂ composite with homogeneous small particles was obtained. And the optimum synthetic temperature was 500°C for 5 hour and 900°C for 20 hour. From charge/discharge test, it can be seen that at 0.1C, 0.2C and 0.5C rate, LiNi_1/3Co_1/3Mn_1/3O₂ has initial discharge capacities of 178.6mAh/g, 172.9mAh/g and 152.7mAh/g, respectively. The discharge capacities of optimum sample remain above 85% after 43 cycles. This study provides the selection of synthetic temperature via solid state methods.

• Periodical: Applied Mechanics and Materials (Volume 863)
• Pages: 33-37
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.863.33
• Online since: February 2017
• Authors: Rui He, Li Hui Zhang, Ru Hui Guo, Zhen Fa Liu*
• Keywords: Electrochemical Properties, Lithium Iron Phosphate, Synthesis Temperature

References

[1] J. J. Wang, X. L. Sun, Understanding and recent development of carbon coating on LiFePO4 cathode materials for lithium-ion batteries, Energy Environ. Sci. 5 (2012) 5163-5185.

DOI: 10.1039/c1ee01263k

[2] A. K. Padhi, K. S. Nanjundaswamy, C. Masquelier, S. Okada, J. B. J. Goodenough, Effect of structure on the Fe3+/Fe2+ redox couple in iron phosphates, Electrochem. Soc. 144 (1997) 1609.

DOI: 10.1149/1.1837649

[3] J. B. Goodenough, Y. Kim, Challenges for rechargeable Li batteries, Chem. Mater. 2010, 22, 587. doi: 10. 1021/cm901452.

[4] A. K. Padhi, K. S. Nanjundaswamy, J. B. J. Phospho‐olivines as positive‐electrode materials for rechargeable lithium batteries, Goodenough, Eletrochem. Soc. 144 (1997) 1188-1194.

DOI: 10.1149/1.1837571

[5] H. S. Shin, S. H. Park, Y. C. Bae, et al., Synthesis of Li[Ni0. 475Co0. 05Mn0. 475]O2 cathode materials via a carbonate process, Solid State Ionics, 176 (2005) 2577-2581.

DOI: 10.1016/j.ssi.2005.07.008

[6] Z. M. Luo, Y. G. Sun, H. Y. Liu, Electrochemical performance of a nano SnO2-modified LiNi1/3Co1/3Mn1/3O2 cathode material, Chin. Chem. Lett. 26(11) (2015) 1403-1408.

DOI: 10.1021/acsami.7b19692.s001

[7] R. R. Zhao, Z. L. Yang, J. C. Chen, et al., Novel solvo/hydrothermal assisted co-precipitation method for faceted LiNi1/3Co1/3Mn1/3O2 cathode material, J. Alloys Comp. 627 (2015) 206-210.

DOI: 10.1016/j.jallcom.2014.11.186

[8] L. Zhang, P. X. Zhang, Z. Z. Fan, et al. Synthesis of LiNi1/3Co1/3Mn1/3O2 composite powders by solid state reaction, Adv. Mater. Res. 158 (2011) 262-272.