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A kind of hydrothermal preparation method of tin-cobalt alloy negative electrode material for lithium ion battery

A technology for lithium-ion batteries and negative electrode materials, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as high energy consumption, secondary pollutants, and complicated methods, and achieve low energy consumption, easy process, and easy preparation process operation simple effect

Inactive Publication Date: 2011-12-28
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a tin-cobalt alloy negative electrode material for lithium-ion batteries in order to solve the problems of complex methods for preparing tin-cobalt alloy negative electrode materials in the prior art, high energy consumption, and easy generation of secondary pollutants during the synthesis process. Hydrothermal preparation method, the method is simple and easy to control, and it exhibits excellent electrochemical performance when used as a negative electrode material for lithium-ion batteries

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  • A kind of hydrothermal preparation method of tin-cobalt alloy negative electrode material for lithium ion battery
  • A kind of hydrothermal preparation method of tin-cobalt alloy negative electrode material for lithium ion battery

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Embodiment

[0020] A preparation method of tin-cobalt alloy negative electrode material for lithium ion battery, the specific preparation steps are as follows:

[0021] 1) Add 4.060 g of tin dichloride dihydrate and 1.428 g of cobalt dichloride hexahydrate into 50 ml of deionized water, and stir to completely dissolve it;

[0022] 2) Add 2.724g of sodium borohydride into 35ml of deionized water, and stir to completely dissolve it;

[0023] 3) drop the aqueous solution of sodium borohydride prepared in step 2) into the solution prepared in step 1), and stir to make it evenly mixed;

[0024] 4) Transfer the mixed solution prepared in step 3) into a closed reaction kettle, the reaction temperature is 160°C, and the reaction time is 24h;

[0025] 5) After the reaction is completed, the reaction kettle is taken out and cooled to room temperature, and the turbid liquid containing black precipitate is suction-filtered, washed, and dried to obtain the tin-cobalt alloy negative electrode material...

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Abstract

The invention relates to a hydrothermal preparation method for a tin-cobalt alloy negative electrode material of a lithium ion battery, and belongs to the technical field of chemical electrode material manufacturing technology. Dissolve tin dichloride dihydrate and cobalt dichloride hexahydrate in deionized water; add sodium borohydride to deionized water, stir to dissolve completely, and then mix the two solutions; transfer the prepared mixed solution into a closed In the reaction kettle, after the reaction is completed, the reaction kettle is taken out and cooled to room temperature, and the cloudy liquid containing the black precipitate is suction-filtered, washed and dried to obtain the tin-cobalt alloy negative electrode material. The preparation process of the present invention is simple in operation, easy to control the process, low in energy consumption, friendly to the environment, does not produce secondary pollutants, and obtains a tin-cobalt alloy negative electrode material whose main phase is Co3Sn2, which is displayed when used as a lithium ion battery negative electrode material It has a high initial charge-discharge specific capacity and good cycle performance.

Description

technical field [0001] The invention relates to a hydrothermal preparation method for a tin-cobalt alloy negative electrode material of a lithium ion battery, and belongs to the technical field of chemical electrode material manufacturing technology. Background technique [0002] In the 21st century, energy shortage is increasingly becoming a bottleneck restricting the development of human society. The world's oil can still be exploited for about 30 years, and the reserves of coal mines are not optimistic. The world energy crisis that broke out in the 1960s and 1970s is even more alarming for people. alarm bell. Moreover, with the deterioration of the human living environment, people are eagerly looking for new green energy sources and improving the utilization rate of existing energy sources. Research on solar energy, wind energy, tidal energy, biomass energy, nuclear energy, geothermal energy, hydrogen energy and other energy sources is also in full swing. Among all the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/1397
CPCY02E60/122Y02E60/12Y02E60/10
Inventor 穆道斌吴锋吴伯荣宋亮陈实陈显建
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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