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Method for preparing carbon modified lithium ion battery Li4Ti5O12 cathode material in one step

A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, secondary batteries, chemical instruments and methods, etc., can solve the problems of complex process and high cost of negative electrode materials, and achieve excellent electrochemical performance, enhanced conductivity, and controllable strong effect

Inactive Publication Date: 2014-05-07
BEIJING INSTITUTE OF TECHNOLOGYGY +1
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Problems solved by technology

[0004] The purpose of the invention is to solve the problem of existing modified lithium ion battery Li 4 Ti 5 o 12 The problem of complex process and high cost of negative electrode materials provides a one-step preparation of carbon-modified lithium-ion batteries Li 4 Ti 5 o 12 The method of negative electrode material

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  • Method for preparing carbon modified lithium ion battery Li4Ti5O12 cathode material in one step
  • Method for preparing carbon modified lithium ion battery Li4Ti5O12 cathode material in one step

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Embodiment 1

[0024] One-step preparation of carbon-modified Li-ion batteries Li 4 Ti 5 o 12 The process method of negative electrode material, concrete steps are:

[0025] 1) Weigh 13g of tetrabutyl titanate (TBT), and dissolve it in 20ml of absolute alcohol under continuous stirring. After it is completely dissolved, continue stirring for 30 minutes at room temperature, and record it as solution A; 1.3g of lithium hydroxide and 1.5g of sucrose were dissolved in 13ml of deionized water under continuous stirring. After completely dissolving, continue to stir at room temperature for 30 minutes, and record it as solution B;

[0026] 2) Add solution A to solution B drop by drop with a peristaltic pump in the state of continuous stirring until all solution A is added dropwise, and continue to stir for 2 hours to fully proceed the reaction;

[0027] 3) Move the obtained white suspension to an oven at 105°C for 24 hours and grind the obtained solid into powder;

[0028] 4) Calcining the obtai...

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Abstract

The invention relates to a method for preparing a carbon modified lithium ion battery Li4Ti5O12 cathode material in one step, belonging to the technical field of manufacturing processes of chemical electrode materials. According to the method for preparing the carbon modified lithium ion battery Li4Ti5O12 cathode material in one step, a soluble metallic titanium salt and a soluble metallic lithium salt are selected as raw materials, and a carbon source is added to a precursor solution directly, so that carbon is introduced in the process of forming an LTO precursor; the purpose of modifying the rate performance of the Li4Ti5O12 cathode material is achieved through subsequent heat treatment. The carbon modified lithium ion battery Li4Ti5O12 cathode material prepared by using the method has excellent electrochemical performance. Meanwhile, the conductivity of the material is enhanced due to the introduction of the carbon; the carbon modified lithium ion battery Li4Ti5O12 cathode material has high rate charging / discharging performance.

Description

technical field [0001] The invention relates to one-step preparation of carbon-modified lithium ion battery Li 4 Ti 5 o 12 The method for negative electrode materials belongs to the technical field of chemical electrode material manufacturing technology. Background technique [0002] In recent years, in response to the impact of the rapid consumption of traditional petrochemical resources such as oil and natural gas, the United States, Japan, China and other countries are actively developing and utilizing clean energy, such as wind energy and solar energy. However, the uncontrollability of wind and solar energy in terms of power generation time and power generation, as well as the "peak-valley effect" in the grid load, makes electric energy storage a necessary part of the grid's "peak-shaving and valley-filling" has attracted much attention. Lithium-ion batteries, as the main candidate power source for future energy storage power stations, have the characteristics of low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/485C01G23/00
CPCC01G23/005H01M4/362H01M4/485H01M4/625H01M10/0525Y02E60/10
Inventor 穆道斌吴伯荣杨磊马云凤代文慧赵菲菲侯雄雄赵章宏陶丹
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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