A kind of preparation method of lithium battery hard carbon negative electrode material

A negative electrode material, lithium battery technology, applied in battery electrodes, nanotechnology for materials and surface science, secondary batteries, etc. High capacity, increased specific surface area, good rate performance
CN109786694BActive Publication Date: 2022-04-22云南中晟新材料有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
云南中晟新材料有限责任公司
Publication Date
2022-04-22

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Abstract

The invention discloses a method for preparing a lithium battery hard carbon negative electrode material. The method uses waste automobile brake pads as the main raw material, introduces PbO / CNTs composite nanomaterials, and prepares the battery capacity by physical compounding, chemical synthesis and other methods. Lithium-ion battery with high charge and discharge rate performance. Compared with traditional battery negative electrode materials, the lithium battery hard carbon negative electrode material prepared in the present invention uses waste automobile brake pads as the main source of phenolic resin, which not only recycles the waste, but also makes the waste have a good treatment Disposal realizes the recycling and reuse of waste, and as the negative electrode material of lithium-ion batteries, the prepared lithium-ion batteries have high capacity and charge and discharge rates, so they have good promotion and application value.
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Description

technical field

[0001] The invention relates to a preparation method of a lithium battery negative electrode material, in particular to a preparation method of a hard carbon negative electrode material used in an automobile lithium battery. Background technique

[0002] With the rapid development of the automobile industry, the number of scrapped automobile brake pads with phenolic resin as the main component is also increasing. The main component of automobile brake pads is phenolic resin. There are many difficulties, but because its structure contains a large number of benzene rings and has a large cross-linking density, it has high mechanical strength and good electrical properties, as well as heat resistance, wear resistance, corrosion resistance and other properties, thus It still occupies a major position in various electronic devices and is widely used in electronic products. For example: making insulation mechanism components for electrical appliances and instrument...

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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