A kind of hard carbon material and preparation method thereof

A hard carbon and raw material technology, applied in the preparation/purification of carbon, structural parts, electrical components, etc., can solve the problems that affect the practical process of hard carbon materials, small lithium intercalation capacity and reversible capacity, and irregular layer structure. , to achieve good large-scale application potential, improved electrochemical performance, and good high-power discharge performance
CN108963252BActive Publication Date: 2020-11-27北京英耐时新能源科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
北京英耐时新能源科技有限公司
Publication Date
2020-11-27

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Abstract

The invention discloses a hard carbon material and a preparation method thereof. A natural component is used as a raw material, and through raw material primary calcination, coarse pulverization, special Binchotan coating carbonization, fine pulverization and classification, the best carbonization effect is obtained. The hard carbon is rich in amorphous microporous structures. Compared with the prior art, the preparation method has simple processes, a high yield, a low cost and a good large-scale application potential. The raw materials used in preparation are environmentally friendly. The electrochemical properties of the prepared hard carbon are obviously improved. The hard carbon material can be used in the preparation of lithium ion batteries, has good cycling and fast chargeability and excellent charge and discharge performances and is especially suitable for power batteries for electric vehicles with high power density and high energy density.
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Description

technical field

[0001] The invention relates to a hard carbon material and a preparation method thereof, belonging to the technical field of lithium ion batteries. Background technique

[0002] With the development of science and technology and the improvement of living standards, human beings have an increasing demand for multifunctional portable electronic devices and electric vehicles. Therefore, research on high energy density, good load characteristics, fast charging and discharging, high safety performance, long cycle life, Low-cost new lithium-ion batteries have become an important frontier field in the world.

[0003] At present, carbon-based anode materials are selected as anode materials for lithium-ion batteries because of their low cost and electrochemical lithium intercalation hosts. Graphite material has the advantages of low electrode potential, long cycle life, good safety and low price, and has become the main negative electrode material for commercial lith...

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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