Effect of Calcination Temperature of Size Controlled Microstructure of LiNi0.8Co0.15Al0.05O2 Cathode for Rechargeable Lithium Battery


Tae-Jun Park, Jung-Bin Lim, Jong-Tae Son, Journal of Information Processing Systems Vol. 35, No. 2, pp. 357-364, Feb. 2014  

https://doi.org/10.5012/bkcs.2014.35.2.357
Keywords: Cathode material, Li(Ni0.8Co0.15Al0.05)O2, Calcination temperature, Lithium Ion Battery, Lithium ion battery Co-precipitation
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Abstract

Size controlled, LiNi0.8Co0.15Al0.05O2 cathode powders were prepared by co-precipitation method followed by heat treatment at temperatures between 750 and 850 oC. The synthesized samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and electrochemical performance. The synthesized LiNi0.8Co0.15Al0.05O2 after calcined at 750 oC has a good electrochemical performance with an initial discharge capacity of 190 mAh g1 and good capacity retention of 100% after 30 cycles at 0.1C (17 mA g1). The capacity retention of LiNi0.8Co0.15Al0.05O2 after calcined at 750 oC is better than that at 800 and 850 oC without capacity loss at various high C rates. This is ascribed to the minimized cation disorder, a higher conductivity, and higher lithium ion diffusion coefficient (DLi) observed in this material. In the differential scanning calorimetry DSC profile of the charged sample, the generation of heat by exothermic reaction was decreased by calcined at high temperature, and this decrease is especially at 850 oC. This behavior implies that the high temperature calcinations of LiNi0.8Co0.15Al0.05O2 prevent phase transitions with the release of oxygen.


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Cite this article
[APA Style]
Park, T., Lim, J., & Son, J. (2014). Effect of Calcination Temperature of Size Controlled Microstructure of LiNi0.8Co0.15Al0.05O2 Cathode for Rechargeable Lithium Battery. Bulletin of the Korean Chemical Society, 35(2), 357-364. DOI: 10.5012/bkcs.2014.35.2.357.

[IEEE Style]
T. Park, J. Lim, J. Son, "Effect of Calcination Temperature of Size Controlled Microstructure of LiNi0.8Co0.15Al0.05O2 Cathode for Rechargeable Lithium Battery," Bulletin of the Korean Chemical Society, vol. 35, no. 2, pp. 357-364, 2014. DOI: 10.5012/bkcs.2014.35.2.357.

[ACM Style]
Tae-Jun Park, Jung-Bin Lim, and Jong-Tae Son. 2014. Effect of Calcination Temperature of Size Controlled Microstructure of LiNi0.8Co0.15Al0.05O2 Cathode for Rechargeable Lithium Battery. Bulletin of the Korean Chemical Society, 35, 2, (2014), 357-364. DOI: 10.5012/bkcs.2014.35.2.357.