The structure of LiCoO 2 has been studied with numerous techniques including x-ray diffraction, electron microscopy, neutron powder diffraction, and EXAFS. The solid consists of layers of monovalent lithium cations (Li ) that lie between extended anionic sheets of cobalt and oxygen atoms, arranged as edge-sharing octahedra, with two faces parallel to the sheet plane. T. Lithium cobalt oxide, sometimes called lithium cobaltate or lithium cobaltite, is a with formula LiCoO 2. The atoms are formally in the +3 oxidation state, hence the name lithium cobalt(III). Fully reduced lithium cobalt oxide can be prepared by heating a stoichiometric mixture of Li 2CO 3 and Co 3O 4 or metallic cobalt at 600–800 °C, then the product at 900 °C for many. The usefulness of lithium cobalt oxide as an intercalation electrode was discovered in 1980 by an research group led by and 's. The compound i.