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Synthesis and Structural Characterization of a Novel Layered Lithium Manganese Oxide, Li0.36Mn0.91O2, and Its Lithiated Derivative, Li1.09Mn0.91O2

✍ Scribed by M.H. Rossouw; D.C. Liles; M.M. Thackeray

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 100 KB
Volume: 104
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.1993.1182

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✦ Synopsis

(\Lambda) novel layered lithium manganese oxide, (\mathrm{Li}{0.36} \mathrm{Mn}{0.91} \mathrm{O}{2}), has been prepared from (\mathrm{Li}{2} \mathrm{MnO}{3}) by acid digestion. The structure of the product consists of alternate layers of trigonal prisms, partially occupied by (\mathrm{Li}^{+})ions, and edge-shared octahedra, occupied almost completely by (\mathrm{Mn}^{4+}) ions. Lithiation of this product with Lil at (80^{\circ} \mathrm{C}) forms a rock-salt phase, (\mathrm{Li}{1.09} \mathrm{Mn}{0.99} \mathrm{O}{2}), in which the cubic close-packed oxygen array of the parent (\mathrm{Li}{2} \mathrm{MnO}{3}) structure is regenerated. O 1993 Academic Press. Inc.

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