A kind of negative electrode composite material and its preparation method and application

A composite material and negative electrode technology, applied in the application field of lithium ion batteries, can solve the problems of insufficient rate performance, poor electrode cycle stability, high raw material prices, etc., and achieve good cycle stability, low raw material cost, and electrochemical performance. improved effect
CN106410164BActive Publication Date: 2019-02-12王俐
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
王俐
Publication Date
2019-02-12

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Abstract

The invention discloses a high-performance composite material and its preparation method and application. The composite material is mainly made of water-soluble starch and active substances. The starch is carbonized at high temperature, and the nanoparticles of the active substances exist in the interior of the carbon structure. , forming a coating structure, and there are abundant microporous structures in the entire composite structure. Compared with the prior art, the present invention has simple process steps, short reaction time, good repeatability, high yield, low cost, and good potential for large-scale application; the preparation steps and the raw materials used are green and environmentally friendly; the prepared composite electrode The electrochemical performance of the electrode has been significantly improved, and it is used to prepare a lithium ion electrode, which has good cycle stability and excellent charge and discharge performance.
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Description

Technical field

[0001] The invention relates to the technical field of composite materials, in particular to a preparation method of a negative electrode composite material using a traditional jelly powder preparation method, a preparation method and application in a lithium ion battery. Background technique

[0002] Lithium-ion battery has the advantages of high open circuit voltage, high energy density, long service life, no memory effect, less pollution and low self-discharge rate. It is better than other traditional secondary batteries in overall performance, and is consistently regarded as a variety of portable The most ideal power supply for electronic equipment and electric vehicles. Although graphite, a traditional lithium-ion battery anode material, has good cycle stability and high cost performance, its charge-discharge specific capacity is low, and its volumetric capacity has no advantage. It is difficult to meet the power system, especially electric vehicles and hybri...

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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