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Hard carbon material precursor, pre-carbonized product, hard carbon material, secondary battery, preparation method and application

A technology for hard carbon pre-carbonized products and secondary batteries, which is applied in the preparation/purification of carbon, battery electrodes, circuits, etc., can solve the problems of high energy consumption cost, insufficient electrochemical performance of battery products, and complicated preparation methods. Low energy cost, excellent electrochemical performance, simple process effect

Pending Publication Date: 2022-04-15
上海杉杉新材料有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the problems of complex preparation methods of existing hard carbon materials, high energy consumption costs, and insufficient electrochemical performance of the obtained battery products, the present invention provides a hard carbon material precursor, hard carbon material pre-carbonized products, hard carbon Materials and secondary batteries, and their preparation methods and applications of hard carbon materials

Method used

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  • Hard carbon material precursor, pre-carbonized product, hard carbon material, secondary battery, preparation method and application
  • Hard carbon material precursor, pre-carbonized product, hard carbon material, secondary battery, preparation method and application
  • Hard carbon material precursor, pre-carbonized product, hard carbon material, secondary battery, preparation method and application

Examples

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Embodiment 1

[0039] (1) Preparation of hard carbon material precursor

[0040] Dissolve 50 g of coumarone resin in 100 g of chloroform solution, add 5 g of AlCl to the resulting solution 3 (coumarone resin and chloroform mass ratio are 0.5, AlCl 3 The mass ratio to coumarone resin is 0.1), and stirred and reacted in a water bath at 60° C. for 24 hours. After the reaction is finished, the generated precipitate is filtered, washed and dried to obtain a hard carbon material precursor.

[0041] (2) Preparation of pre-carbonized products of hard carbon materials

[0042] Pre-carbonize the hard carbon material precursor obtained in step (1) in a well-type furnace under nitrogen protection. The pre-carbonization temperature is 600° C. and the pre-carbonization time is 4 hours to obtain a hard carbon material pre-carbonized product.

[0043] (3) Preparation of hard carbon materials

[0044] The hard carbon material pre-carbonized product obtained in step (2) is carbonized in a tube furnace und...

Embodiment 2

[0047] In embodiment 1, coumarone resin is replaced by epoxy resin, and other conditions and operations are all the same.

Embodiment 3

[0049] In Example 1, the coumarone resin was replaced with mesophase pitch, and other conditions and operations were unchanged.

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Abstract

The invention discloses a preparation method of a hard carbon material precursor, which comprises the following step: in halogenated hydrocarbon, under the action of a Lewis acid catalyst, carrying out Friedel-Crafts alkylation reaction on an aryl-containing hard carbon material raw material high-molecular organic matter to obtain the hard carbon material precursor. The invention also discloses a pre-carbonized product prepared from the hard carbonized material precursor, a hard carbon material and a secondary battery, a preparation method and application of the hard carbon material in preparation of a secondary battery electrode. The preparation method is simple, convenient and easy to operate, low in energy consumption cost and high in controllability, and the prepared hard carbon material is stable in structure and has excellent electrochemical performance as a secondary battery electrode material.

Description

technical field [0001] The invention relates to a hard carbon material precursor, a hard carbon material pre-carbonized product, a hard carbon material and a secondary battery, a preparation method and an application of the hard carbon material. Background technique [0002] In recent years, with the rise of the new energy industry, secondary batteries such as lithium-ion batteries and sodium-ion batteries have gradually entered the production and life of society. With the increasing demand for high-quality and low-cost products, the secondary battery industry has also put forward higher requirements for the negative electrode materials of batteries. Research and development of high-capacity, low-cost anode materials has become a hot spot in the secondary battery industry. [0003] At present, the main commercial materials for secondary batteries are carbon materials with high structural stability and excellent electrochemical performance. Many researchers have carried out ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/133H01M4/1393H01M4/583C08F8/02C08G59/14C01B32/05
Inventor 王晓阳范拯华陈兵帅胡国志潘福森张秀云
Owner 上海杉杉新材料有限公司
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