Method for preparing negative pole material SnS2 of lithium ion battery

A technology for lithium ion batteries and negative electrode materials, which is applied in electrode manufacturing, battery electrodes, circuits, etc., can solve problems such as unevenness and large material particles, and achieve the effects of uniform distribution, high phase purity and small particle size.

Inactive Publication Date: 2009-12-23
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of SnS in the prior art 2 The problem of large and uneven material particles is to improve t

Method used

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  • Method for preparing negative pole material SnS2 of lithium ion battery
  • Method for preparing negative pole material SnS2 of lithium ion battery

Examples

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[0019] Example

[0020] (1) Mix 39ml of ethylene glycol and 39ml of water as a solvent;

[0021] (2) Add 1.2 g of thioacetamide to the solvent prepared in (1), and stir to completely dissolve it;

[0022] (3) Dissolve 4.5 g of tin tetrachloride pentahydrate in 12 ml of concentrated hydrochloric acid, stir to mix evenly;

[0023] (4) Add the solution prepared in (2) to the solution prepared in (3), and stir to make it evenly mixed;

[0024] (5) Add the mixed solution prepared in (4) to the self-pressurizing reactor, and seal it, the reaction temperature is 120°C, and the reaction time is 12h;

[0025] (6) After the completion of the reaction, take out the reaction kettle and let it cool to room temperature naturally, and perform suction filtration, washing and drying on the turbid liquid containing yellow precipitate to obtain SnS 2 Material, SnS obtained 2 The material is used as the active material of the negative electrode material of the lithium ion battery.

[0026] SnS 2 It i...

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Abstract

The invention relates to a method for preparing negative pole material SnS2 of a lithium ion battery, belonging to the technical field of chemical electrode material manufacturing technique. The method comprises: thioacetamide is added into the mixed solvent of alcohol and water, pentahydrate stannic chloride is dissolved in concentrated hydrochloric acid, and then the mixed solution of the thioacetamide and the mixed solution of the pentahydrate stannic chloride are mixed together to obtain new mixed solution; the new mixed solution is added into a self-boost reaction kettle and sealed; after the reaction, the reaction kettle is taken out and naturally cooled to have room temperature; turbid liquid containing yellow precipitation is leached, washed and dried, so that the SnS2 material can be obtained. The method has simple and easy preparation technique, easily controlled parameters, high phase purity of the obtained SnS2 material, good appearance structure and uniform distribution; the application of the negative pole material of the lithium ion battery shows high charge-discharge ratio capacity.

Description

technical field [0001] The invention relates to a lithium ion battery negative electrode material SnS 2 The preparation method belongs to the technical field of chemical electrode material manufacturing technology. Background technique [0002] Since the lithium-ion battery was successfully developed, due to its advantages such as high specific energy, wide application temperature range, low self-discharge rate, long cycle life, and environmental friendliness, its application range has become more and more extensive, and it has gradually become a popular choice for small portable electronic products. Power used. In addition, due to the huge pressure of global energy and environmental protection, domestic and foreign countries are also competing to develop large-capacity and high-performance lithium-ion secondary batteries required for electric vehicles, aerospace and energy storage. In order to meet the above-mentioned demand for high-performance lithium-ion batteries, res...

Claims

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Application Information

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IPC IPC(8): H01M4/04H01M4/58
CPCY02E60/12Y02E60/10
Inventor 吴锋穆道斌吴伯荣陈实万婷苏岳锋王敬杨凯
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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