Method for preparing LimMn(XO4)y Lithium ion cell electrode material

Abstract

The invention is a method for preparing electrode material for LimMn(XO4)y type lithium ion battery, using acrylate and its derivative as monomers, mixing monomers with metallic ion water solution or monomer and metallic ion water solution to prepare an uniform, stable, moderate-viscosity solution, then adding in initiator to make chemical cross-linking reaction of acrylate to form polymer network structure, bonding metallic ions with carboxylate radicals, and fixing them in the microstructures of the polymer network, drying and obtaining polymer precursor; making polymer precursor pyrogenation and then burning, obtaining corresponding nano material for lithium ion battery. And its process is simple and easy to control, convenient to large-scale production.

Description

technical field [0001] The invention relates to a preparation method of an electrode material of a lithium ion battery, which is particularly suitable for preparing the electrode material of a lithium ion battery and belongs to the field of chemical materials. Background technique [0002] Due to its high voltage and high specific energy characteristics, lithium-ion batteries can best meet the miniaturization and lightweight requirements of portable electronic products, and become the most competitive supporting products in the above-mentioned fields. After several years of market selection and competition, lithium-ion batteries have gradually replaced nickel-cadmium and nickel-metal hydride batteries and become the mainstream of the "3C" market (camcorder, computer, cellularphone). [0003] The improvement of the performance of lithium-ion batteries mainly depends on the improvement of electrode materials and the development of new materials. At present, the cathode materi...

AI Technical Summary

Problems solved by technology

At present, the cathode materials used in lithium-ion batteries are transition metal oxides (such as LiCoO 2 , LiNiO 2 , LiMn 2 o 4 etc.), although these materials have high specific capacity and good cycle performance, their safety is poor and cannot meet the performance requirements of power lithium-ion batteries

At present, some materials containing acid anions (Li m m n (XO 4 ) y ) has a very high safety performance against heat, overcharge and other conditions, among which LiFePO 4 The comprehensive performance of materials is particularly outstanding. However, these materials generally use solid phase and sol-gel methods, and these methods have disadvantages such as complicated preparation processes and harsh process conditions. Therefore, it is necessary to develop a material preparation method with simple process and easy control. It has realistic application prospects for the development and performance improvement of power lithium-ion battery electrode materials

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