CATHODE ACTIVE MATERIAL FOR SECONDARY BATTERY

摘要

The present invention provides a cathode active material for a secondary battery comprising one compound or two or more compounds, which have a transitional metal layer containing lithium, and are selected from the following chemical formula 1 Li(Li3x±yM1-yPx)O2+z (1). In formula 1, M is a stable six coordinate element comprising at least one element selected from transition metals in period 1 and period 2, and wherein 0y when 3x-y.