Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 11, Issue 1, Pages 91-94Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2008.10.043
Keywords
LiMn1.4Ni0.4Cr0.2O4; Structure; Electrochemical performance; Surface modification
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LiMn1.4Cr0.2Ni0.4O4 and a series of Li4Ti5O12/LiMn1.4Cr0.2Ni0.4O4 composites were prepared by a solution method. XRD reveals that the LTO-coated LiMn1.4Cr0.2Ni0.4O4 samples have better crystallinity than that of pure LiMn1.4Cr0.2Ni0.4O4. SEM and EDX show that the surface of LiMn1.4Cr0.2Ni0.4O4 was successfully coated with Li4Ti5O12 particles after the surface modification treatment. Galvanostatic charge-discharge testing indicates 4 wt.% LTO-coated LiMn1.4Cr0.2Ni0.4O4 has the highest electrochemical performance among three samples, implying that surface modification is beneficial to the reversible intercalation and de-intercalation of Li+. (C) 2008 Elsevier B.V. All rights reserved.
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