Abstract
Abstract Stoichiometric LiNiO 2 was delithiated using NOPF 6 oxidation or acid leaching. We obtained a highly delithiated compound of Li 0.1 NiO 2 by the latter process, whose electrochemical properties were substantially the same as those of Li x NiO 2 obtained by electrochemical delithiation. The chemically delithiated Li x NiO 2 sample allowed us to investigate the intrinsic thermal behavior of Li x NiO 2 , as it was free from any influence of conductive agents or binders. The thermal decomposition mechanism of Li x NiO 2 is discussed based on the results of X-ray diffraction and thermogravimetric analysis.
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