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

A technology for lithium ion batteries and electrode materials, applied in the field of chemical materials, can solve the problems of inability to meet the performance requirements of power lithium ion batteries, harsh process conditions, complicated preparation processes, etc., and achieves easy mass production, cheap raw materials, and easy conditions. control effect

A technology for lithium ion batteries and electrode materials, applied in the field of chemical materials, can solve the problems of inability to meet the performance requirements of power lithium ion batteries, harsh process conditions, complicated preparation processes, etc., and achieves easy mass production, cheap raw materials, and easy conditions. control effect

CN1850609AInactive Publication Date: 2006-10-25WUHAN UNIV
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  • Method for preparing LimMn(XO4)y Lithium ion cell electrode material
  • Method for preparing LimMn(XO4)y Lithium ion cell electrode material
  • Method for preparing LimMn(XO4)y Lithium ion cell electrode material

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Embodiment Construction

[0027] specific implementation

[0028] Example 1 Lithium-ion battery LiFePO 4 Preparation of / C nanometer cathode material

[0029] 17.7g LiOH·H 2 O, 164.1g Fe(NO 3 ) 3 ·6H 2 O and 46.5 g NH 3 h 2 PO 4 The aqueous solution was mixed to form a uniform aqueous solution, and then added dropwise to the mixed solution of 58.8g acrylic acid, after stirring evenly, 50mg of 4% initiator aqueous solution ((NH 4 ) 2 S 2 o 8 ), initiate polymerization at 80°C, and then dry the polymer at 120°C to obtain a polymer precursor. The polymer precursor was burned for 3 hours at 700 °C under the protection of argon to obtain the target product LiFePO 4 / C. The product contained -13% carbon.

[0030] The resulting LiFePO 4 The TEM image of the / C material shows that the material synthesized by this method has a uniform particle size distribution and a nanometer scale (~70nm). figure 1 The discharge performance of the material as the positive electrode material of lithium-ion bat...

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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...

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Application Information

Patent Timeline
25 Oct 2006
Publication
CN1850609A
IPC
C01G1/00; C01B25/45; H01M4/04
CPC
Y02E60/10
Inventors
曹余良; 杨汉西