Fabrication and characterization of Zr and Co co-doped LiMn₂O₄ nanowires using sol–gel–AAO template process

Author： Liu Xiaohong Wang Jinqing Zhang Junyan Yang Shengrong

ISSN： 0957-4522

Source： Journal of Materials Science: Materials in Electronics, Vol.17, Iss.11, 2006-11, pp. : 865-870

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Abstract

The Zr and Co co-doped LiMn₂O₄ nanowires are fabricated successfully by using sol–gel process with porous anodic aluminum oxide (AAO) as the template. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) characterization show that the synthesized LiZr_xCo_yMn_(2-x-y)O₄ nanowires are uniformly distributed, high-ordered, and parallel to each other, and few microscopic defects are found. Selected area electron diffraction (SAED) pattern, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) investigations jointly demonstrate that the synthesized nanowires have a similar single spinel structure of LiMn₂O₄ crystal though Zr and Co are doped. Since the LiZr_xCo_yMn_(2-x-y)O₄ nanowires can be mass-produced by using this method, it is expected to find promising application as a new cathode material in lithium ion battery.