POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREOF

摘要

The present invention provides a positive electrode active material which includes a lithium transition metal oxide particle and at least one kind of conductive oxide particle on the lithium transition metal oxide particle surface, and also provides a preparation method for the positive electrode active material.;A positive electrode active material includes lithium transition metal oxide particles and particular conductive oxide particles which have a single phase, and thus the positive electrode active material not only has superb electronic conductivity, while having excellent ion transfer capability which allows transfer of metal ions such as lithium ions to lithium transition metal oxide particles, but may also minimize capacity reduction and output reduction in a secondary battery.

主权项

1. A positive electrode active material, comprising:
lithium transition metal oxide particles; conductive oxide particles; and composite particles, wherein the conductive oxide particles include antimony tin oxide (ATO) or a mixture of indium tin oxide (ITO) and ATO, and the conductive oxide particles and the composite particles include a single-phase peak when measured by X-ray diffraction (XRD) analysis.