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http://dx.doi.org/10.4191/KCERS.2010.47.6.633

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)
Publication Information
Journal of the Korean Ceramic Society / v.47, no.6, 2010 , pp. 633-637 More about this Journal
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
Lithium manganese oxide spinel; Crystallinity; Surface modification; Tap density;
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Times Cited By SCOPUS : 2
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1 Y.K. Sun, D.W. Kim, and Y.M. Choi, “Synthesis and Characterization of Spinel $LiMn_{2-x}Ni_{x}O_{4}$ for Lithium/polymer Battery Applications,” J. Power Sources, 79 [2] 231-37 (1999).   DOI
2 G. T.-K0 Fey, C.-Z. Lu, and T. P. Kumar1, “Solid-state Synthesis and Electrochemical Characterization of $LiM_{y}Cr_{0.5-y}Mn_{1.5}O_{4}$ (M = Fe or Al; 0.0 < y < 0.4) Spinels,” Mater. Chem. and Phys., 80 [1] 309-18 (2003).   DOI
3 K. Dokko, S. Horikoshi, T. Itoh, M. Nishizawa, M. Mohamedi, and I. Uchida, “Microvoltammetry for Cathode Materials at Elevated Temperatures:electrochemical Stability of Single Particles,” J. Power Sources, 90 [1] 109-15 (2000).   DOI
4 S.-W. Lee, K.-S. Kim, H.-S. Moon, H.-J. Kim, B.-W. Cho, W.-I. Cho, J.-B. Ju, and J.-W. Park “Electrochemical Characteristics of $Al_{2}O_{3}$-coated Lithium Manganese Spinel as a Cathode Material for a Lithium Secondary Battery,” J. Power Sources, 126 [1-2] 150-55 (2004).   DOI
5 D.Q. Liu, X.Q. Liu, and Z.Z. He, “The Elevated Temperature Performance of $LiMn_{2}O_{4}$ Coated with $Li_{4}Ti_{5}O_{12}$ for Lithium Ion Battery,” Mater. Chem. Phys., 105 [2-3] 362-66. (2007)   DOI
6 K. Nakahara, R. Nakajima, T. Matsushima, and H. Majima, “Preparation of Particulate $Li_{4}Ti_{5}O_{12}$ Having Excellent Characteristics as an Electrode Active Material for Power Storage Cells,” J. Power Sources, 117 [1-2] 131-36 (2003).   DOI
7 G.A. Nazri and G. Pistoia (Eds.), “Lithium Batteries: Science and Technology,” pp. 6-29, Kluwer Academic Publishers, Boston, 2004.
8 M. Hosoya, H. Ikuta, and M. Wakihara, “Single Phase Region of Cation Substituted Spinel LiM Mn O y 22y 42d (M5Cr, Co and Ni) and Cathode Property for Lithium Secondary Battery,” Solid State Ionics, 111 [1-2] 153-59 (1998).   DOI
9 S.C. Park, Y.M. Kim, Y.M. Kang, K.T. Kim, P.S. Lee, and J.Y. Lee, “Improvement of the Rate Capability of $LiMn_{2}O_{4}$ by Surface Coating with $LiCoO_{2}$,” J. Power Sources, 103 [1] 86-92 (2001).   DOI
10 Y. Sun, Y. Xia, and H. Noguchi, “The Improved Physical and Electrochemical Performance of $LiNi_{0.35}Co_{0.3-x}Cr_{x}Mn_{0.35}O_{2}$ Cathode Materials by the Cr Doping for Lithium Ion Batteries,” J. Power Sources, 159 [2] 1377-82. (2006)   DOI