METHOD FOR PREPARING ELECTROCHEMICALLY ACTIVE MATERIAL

摘要

A method for preparing an electrochemically active material. The active material has an analogous chemical formula, Li Mg(1-x)Mnx/3Fe2x/3PO4. The material used in the preparation method is a mixture comprising a magnesium source, manganese source, iron source, lithium source, or phosphorus source compound, and the molar ratio of elements thereof is: element magnesium : element manganese : element iron : element lithium : element phosphorus=(1-x):x/3:2x/3:1:1, x=0.95-1.00. After being fully agitated and evenly mixed in an inert gas protective environment at room temperature, the mixture is conveyed in the inert gas protective environment to a synthetic furnace for agglomeration, and after the agglomeration is completed, the mixture is cooled to obtain the electrochemically active material. In the present invention, the processing reaction time is short, the energy consumption is small, the processed product has excellent performance, and a carbon-free synthetic process is used, so that the iron compound is reduced by using elemental metal manganese, thereby avoiding discharge of carbon dioxide and making it more environmentally friendly.