Fabrication and characterization of Zr and Co co-doped LiMn_(2)O_(4) nanowires using sol-gel-AAO template process

摘要

The Zr and Co co-doped LiMn_(2)O_(4) 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_(x)Co_(y)Mn_((2-x-y))O_(4) 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 LiMn_(2)O_(4) crystal though Zr and Co are doped. Since the LiZr_(x)Co_(y)Mn_((2-x-y))O_(4) 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.