Abstract
There have been literature reports on and in the study of layered double hydroxides and positive electrodes for Li-ion batteries, respectively. However, the different oxidation states of Co ( or ) and Zr suggest that the amount of substitution, , will be limited. In this paper, the precipitate, hoped to be , formed by the addition of an aqueous solution of and to LiOH solution has been thoroughly studied as a function of the ratio, , for . X-ray diffraction and thermogravimetric analysis results show that Zr is not incorporated into the brucite-like layers and do not substitute for a part of the divalent cations . Instead, the added Zr forms or impurities. Attempts to prepare samples from the hydroxide precursors over the range failed. The products were found to be and or impurities, even for . This suggests that cannot be prepared even for additions of Zr as low as 1%.
Published Version
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