Patent ID: 7510805
Filing Date: 2009-03-31
Classification: C01G,C01P,H01M,Y02E

Abstract:
1. Lithium metal composite oxide particles which electrochemically intercalate and deintercalate lithium ions, the lithium metal composite oxide particles comprising: a plurality of secondary particles in an elongated shape each comprised of a plurality of primary particles with an average particle size of 0.1 μm to 1 μm so aggregated as to form voids therebetween, wherein the sizes of the plurality of secondary particles in a long length direction are 5 μm to 14 μm, wherein the plurality of secondary particles comprises columnar secondary particles and planar secondary particles, wherein the sizes of the columnar secondary particles in a short length direction are 1 μm to 4 μm, and the thicknesses of the planar secondary particles are 0.1 μm to 0.3 μm, and wherein the lithium metal composite oxide particles have an elemental composition represented by the general formula: Li