Abstract
A novel layered lithium manganese oxide, Li 0.36Mn 0.91O 2, has been prepared from Li 2MnO 3 by acid digestion. The structure of the product consists of alternate layers of trigonal prisms, partially occupied by Li + ions, and edge-shared octahedra, occupied almost completely by Mn 4+ ions. Lithiation of this product with Lil at 80°C forms a rock-salt phase, Li 1.09Mn 0.91O 2, in which the cubic close-packed oxygen array of the parent Li 2MnO 3 structure is regenerated.
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