Enhanced cyclability of LiCoO2 cathodes coated with alumina derived from carboxylate-alumoxanes
作者： George Ting-Kuo Fey , Jian-Ging Chen , T. Prem Kumar
DOI: 10.1007/S10800-004-5822-7
关键词:
摘要: LiCoO2 cathodes coated with Al2O3 generated from carboxylate–alumoxanes have demonstrated sustainable extended cyclability. The were prepared by reacting boehmite acetic and substituted acids. TEM images of the powders revealed that coatings compact had an average thickness about 20nm. XRD data on materials indicated minor changes in values lattice parameters, suggesting formation solid solutions composition LiAl y Co1– O2 surface during calcination. ESCA depth profiles constituent elements particles support this theory. R-factor analysis galvanostatic cycling studies suggest a 1.0 wt.% coating formed (methoxyethoxy)acetate-alumoxane enhanced cyclability factor 12. improved performance is attributed to suppression cycle-limiting phase transitions accompanying charge–discharge processes. Being without environmentally hazardous organic chemicals by-products, procedure based clean benign process for industrial exploitation.
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