Lithium transition metal oxide

Details Lithium transition metal oxide Lithium transition metal oxide

1991-03-27

1992-11-03

Bell, Mark L.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Iron group metal

429218, C01G 100, C01G 4900, C22B 100

Patent

active

051607123

ABSTRACT:
The invention provides an essentially layered lithium transition metal oxide compound and a method of making it. It comprises lithium cations, transition metal cations T and oxygen anions, the transition metal cations T having an average valency of from +3 to +4. It has its O anions arranged in layers in a substantially cubic-close-packed arrangement, with its Li cations being arranged in layers and its T cations occupying octahedral sites and being arranged in layers. Each layer of the Li cations is sandwiched between two layers of the O anions and each said layer of O anions is sandwiched between a said layer of Li cations and a layer of the T cations. 75%-99.8% of the T cations in the compound are located in the layers of T cations, and the remainder of the T cations are located in the layers of Li cations, the T cations being selected from Co cations and mixtures of Co and Ni cations.

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The Preparation, Crystallography and Magnetic Properties of the Li.sub.x Co.sub.1-x) O System, J. Phys. Chem. Solids, Pergamon Press 1958 vol. 7, pp. 1-13.
Li.sub.x CoO.sub.2 (O(.ltoreq.1): A New Cathode Material for Batteries of High Energy Density, Mat. Res. Bull. vol. 15, pp. 783-789 1980.

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