POSITIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY, AND METHOD FOR PRODUCING POSITIVE ELECTRODE MATERIAL FOR SECONDARY BATTERY

摘要

A cathode material is disclosed which contains an iron lithium phosphate as a cathode active material and has a large charge/discharge capacity, high-rate adaptability, and good charge/discharge cycle characteristics at the same time. Also disclosed are a simple method for producing such a cathode material and a high-performance secondary battery employing such a cathode material. Specifically, disclosed is a cathode material for secondary battery characterized by mainly containing a cathode active material represented by the general formula: Li n FePO 4 (wherein n is a number of 0-1) and further containing at least one different metal element selected from the group consisting of vanadium(V), chromium(Cr), copper(Cu), zinc(Zn), indium(In) and tin(Sn). This cathode material can be produced using a halide of such a metal element as the raw material.