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Solid-phase synthesis oxygen bearing bismuth fluoride anode material for lithium ion battery and preparation method thereof

A technology of bismuth oxyfluoride and lithium-ion batteries, which is applied to battery electrodes, circuits, electrical components, etc., can solve problems such as unpredictable effects and complicated mechanism of matrix action, and achieve low equipment requirements, excellent electrochemical performance, and improved The effect of electronic conductivity

Active Publication Date: 2015-07-22
湖州优研知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanism of ion doping or even multi-ion synergistic doping on the matrix is ​​very complicated, and the effect is often unpredictable.

Method used

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  • Solid-phase synthesis oxygen bearing bismuth fluoride anode material for lithium ion battery and preparation method thereof

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Effect test

Embodiment 1

[0015] Embodiment 1: After mixing bismuth nitrate pentahydrate and 0.5% perfluoroheptanoic acid of bismuth nitrate pentahydrate quality, put it into a ball mill, the mass ratio of the ball mill and the material is 20: 1, and ball mill it at a speed of 200 rpm for 10 hours. This material is called material I; Tetra-n-butylammonium fluoride, Tween-60 of 0.5% of the quality of tetra-n-butylammonium fluoride, 2% absolute ethanol of the quality of tetra-n-butylammonium fluoride are mixed Put into ball mill afterward, the mass ratio of ball mill and material is 20: 1, with the speed ball mill of 200 rev / mins 10 hours, this material is called material II; The ratio of the amount of quaternary ammonium salt substance in material II to the amount of quaternary ammonium salt is put into the ball mill in a ratio of 1:3, the mass ratio of the ball mill and the material is 20:1, and the pressure in the ball mill tank is 5 atmospheres and the volume ratio is 80 : Mixed gas of argon gas and ...

Embodiment 2

[0016]Embodiment 2: 2,2-difluorocyclopropanecarboxylic acid mixed with bismuth chloride and 1% of the quality of bismuth chloride is put into a ball mill, the mass ratio of the ball mill and the material is 20:1, at a speed of 300 rpm Ball mill for 15 hours, and this material is called material I; tetramethylammonium fluoride, 1% op-10 of the quality of tetramethylammonium fluoride, and absolute ethanol of 3% of the quality of tetramethylammonium fluoride are mixed Put into ball mill afterward, the mass ratio of ball mill and material is 20: 1, with the speed ball mill of 300 rev / mins 15 hours, this material is called material II; The ratio of the amount of quaternary ammonium salt substance in material II to the amount of quaternary ammonium salt is put into the ball mill in a ratio of 1:3, the mass ratio of the ball mill and the material is 20:1, and the pressure in the ball mill tank is 5 atmospheres and the volume ratio is 80 : Mixed gas of argon gas and ozone at 20, ball ...

Embodiment 3

[0017] Embodiment 3: After mixing bismuth chloride and bismuth chloride quality 2% perfluoroglutaric acid, put it into a ball mill, the mass ratio of the ball mill and the material is 20:1, ball mill for 20 hours at a speed of 400 rpm, and the This material is called material I; benzyltrimethylammonium fluoride, 2% of the quality of benzyltrimethylammonium fluoride Span-80, 4% of the quality of benzyltrimethylammonium fluoride After mixing absolute ethanol, put it into a ball mill, the mass ratio of the ball mill and the material is 20:1, ball mill for 20 hours at a speed of 400 rpm, and this material is called material II; The ratio of the amount of the substance of the salt to the amount of the quaternary ammonium salt in the material II is 1:3 and put into the ball mill, the mass ratio of the ball mill and the material is 20:1, and the pressure is 5 atmospheres in the ball mill tank simultaneously. The mixed gas of argon and ozone with a volume ratio of 80:20 was ball-mille...

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Abstract

The invention relates to a solid-phase synthesis oxygen bearing bismuth fluoride anode material for a lithium ion battery and a preparation method of the solid-phase synthesis oxygen bearing bismuth fluoride anode material. The preparation method comprises the following steps: a quaternary ammonium salt taking fluoride as an anion is taken as a raw material, the raw material is in solid-phase synthesis into bismuth fluoride by steric hindrance of a macroradical and the action of a specific additive directly, and at the same time, oxygen permeates into a lattice in an ozone atmosphere, so that the electronic conductivity of material is improved greatly; high-purity bismuth fluoride is taken as a cathode material for a secondary battery, and has specific capacity exceeding 200 mAh.g<-1>. The preparation method is low in equipment requirement, the product is high in purity, reaction by-products such as various complex salts for producing bismuth fluoride in the solid-phase reaction can be avoided, and the solid-phase synthesis oxygen bearing bismuth fluoride anode material has excellent electrochemical performance.

Description

technical field [0001] The invention relates to the technical field of a method for manufacturing a high-capacity bismuth fluoride composite lithium battery cathode material. Background technique [0002] Lithium-ion secondary batteries have the absolute advantages of high volume, weight-to-energy ratio, high voltage, low self-discharge rate, no memory effect, long cycle life, and high power density. Currently, the global mobile power market has an annual share of more than 30 billion US dollars and Gradually grow at a rate of more than 10%. Especially in recent years, with the gradual depletion of fossil energy, new energy sources such as solar energy, wind energy, and biomass energy have gradually become alternatives to traditional energy sources. Among them, wind energy and solar energy are intermittent, and a large amount of energy is used simultaneously to meet the needs of continuous power supply. Energy storage batteries; urban air quality problems caused by automobi...

Claims

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Application Information

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IPC IPC(8): H01M4/136H01M4/58H01M4/1397
CPCH01M4/136H01M4/1397H01M4/58Y02E60/10
Inventor 徐玲霞水淼徐晓萍陈超陈姝舒杰任元龙
Owner 湖州优研知识产权服务有限公司
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