Journal of the Korean Ceramic Society (한국세라믹학회지)

The Korean Ceramic Society (한국세라믹학회)
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Crystallinity and Battery Properties of Lithium Manganese Oxide Spinel with Lithium Titanium Oxide Spinel Coating Layer on Its Surface

  • Ji, Mi-Jung (Korea Institute of Ceramic Engineering & Technology) ;
  • Kim, Eun-Kyung (Korea Institute of Ceramic Engineering & Technology) ;
  • Ahn, Yong-Tae (Korea Institute of Ceramic Engineering & Technology) ;
  • Choi, Byung-Hyun (Korea Institute of Ceramic Engineering & Technology)
  • Received : 2010.11.18
  • Accepted : 2010.11.23
  • Published : 2010.11.30
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Abstract

In this study, lithium manganese oxide spinel ($LiMn_{1.9}Fe_{0.1}Nb_{0.0005}O_4$) as a cathode material of lithium ion secondary batteries is synthesized with spray drying, and in order to increase its crystallinity and electrochemical properties, the granulated $LiMn_{1.9}Fe_{0.1}Nb_{0.0005}O_4$ particle surface is coated with lithium titanium oxide spinel ($Li_4Ti_5O_{12}$) through a sol-gel method. The granulated particles present a higher tap density and lower specific surface area. The crystallinity and discharge capacity of the $Li_4Ti_5O_{12}$ coated material is relatively higher than uncoated material. With the coating layer, the discharge capacity and cycling stability are increased and the capacity fading is suppressed successfully.

Keywords

References

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  1. Spray-Drying of Electrode Materials for Lithium- and Sodium-Ion Batteries vol.11, pp.7, 2018, https://doi.org/10.3390/ma11071076