Preparation method and application of a kind of embedded silicon carbon composite material

A silicon-carbon composite material, embedded technology, applied in structural parts, electrical components, battery electrodes and other directions, can solve the problems of not meeting the needs, the effect is not very significant, the effect is not very ideal, etc., to improve the cycle performance and suppress the volume. Inflate, make simple effects
CN107742698BActive Publication Date: 2020-05-08SHANDONG YUHUANG NEW ENERGY TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG YUHUANG NEW ENERGY TECH
Publication Date
2020-05-08

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Abstract

The invention relates to the field of lithium ion batteries and particularly discloses a preparation method and application of an embedded silicon carbon composite material. The preparation method ofthe embedded silicon carbon composite material is characterized by comprising the following steps: stirring and dissolving resin in anhydrous ethanol, adding a curing agent, uniformly stirring, finally adding silicon powder and uniformly stirring; placing asphalt in a beaker, adding a solvent, heating, and stirring till the asphalt is completely molten; mixing the above material, quickly transferring into a sealed reaction vessel, heating while stirring and detecting relieved pressure till no volatile component is volatilized, and the material is cured; sintering and carbonizing the cured material in an inert atmosphere to obtain a final product. The embedded silicon carbon composite material is good in product performance, simple to make, environmentally-friendly and free from pollution,the cycling performance of silicon is improved, the volume expansion of the silicon is inhibited, and the multiple compounding of silicon carbon is realized.
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Description

[0001] (1) Technical field

[0002] The invention relates to the field of lithium ion batteries, in particular to a preparation method and application of an embedded silicon-carbon composite material.

[0003] (2) Background technology

[0004] Since the commercialization of lithium-ion batteries in 1992, the application range of lithium batteries has gradually expanded. From portable electronic products to military equipment, and then to the utilization of new energy, lithium batteries are everywhere. Compared with traditional secondary batteries, lithium-ion batteries have the advantages of high open circuit voltage, high energy density, long service life, no memory effect, no pollution, and small self-discharge, and are more and more widely used. Due to the rapid development and wide application of portable electronic devices and electric vehicles, there is an urgent need for lithium-ion batteries with high specific energy, long cycle life, and fast charge and discharge. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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