A lithium-ion battery positive electrode material iron manganese magnesium lithium phosphate and preparation method thereof

Abstract

A lithium-ion battery positive electrode material iron manganese magnesium magnesium phosphate and its preparation method, the chemical general formula of iron manganese magnesium magnesium lithium phosphate is LiFe0.5Mn0.45Mg0.05PO4, the molar ratio is 1.0-1.2:0.5:0.45:0.05:1 Get lithium source, iron source, manganese source, magnesium source, phosphorus source in the ball mill tank, add carbon source, use distilled water as dispersant, place ball mill in ball mill, make iron manganese magnesium magnesium lithium precursor; Put it into a microwave oven, dry it with microwave treatment for 2~20 minutes, and then leave it for calcination; the precursor powder after microwave treatment is controlled at a heating rate of 5~12°C / min under the protection of an inert gas atmosphere, at 500~850 Calcining at ℃ for 3~15h, and finally cooling to room temperature with the furnace, the doped carbon-coated iron, manganese, magnesium, and lithium cathode materials can be obtained.

Description

technical field

[0001] The invention belongs to the preparation method of battery positive electrode materials in the field of materials, and in particular relates to a lithium ion battery positive electrode material iron manganese magnesium lithium phosphate and a preparation method thereof. Background technique

[0002] With the development of social economy and the improvement of human living standards, the demand for energy in various countries is increasing day by day, while the reduction of traditional fossil energy (coal, oil, natural gas) and the deterioration of the earth's environment have become two major obstacles for human survival and development. Obstacles, searching for new energy sources, and developing energy-saving and environment-friendly energy storage and conversion devices have become one of the hot topics of research in various countries. As a device for mutual conversion of chemical energy and electrical energy, battery is an important medium for rat...

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