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Asphalt-based nanoporous carbon material, negative material thereof, and lithium ion battery

A technology of nanoporous carbon and porous carbon materials, which is applied in the field of porous carbon materials, can solve the problems of small specific surface area, poor liquid absorption performance, and limited material performance, and achieve simple synthesis conditions, strong liquid absorption and retention capabilities, and improved circulation. performance effect

Inactive Publication Date: 2015-01-21
HENAN ZHONGLIAN GAOKE NEW ENERGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the advantages of rich resources, low price, high carbon content, good fluidity, and easy graphitization, pitch has become a common material for preparing graphite-based materials. However, pitch-based materials have defects such as small specific surface area and poor liquid absorption performance. , which limits the full play of its material properties

Method used

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  • Asphalt-based nanoporous carbon material, negative material thereof, and lithium ion battery
  • Asphalt-based nanoporous carbon material, negative material thereof, and lithium ion battery
  • Asphalt-based nanoporous carbon material, negative material thereof, and lithium ion battery

Examples

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Embodiment 1

[0048] The pitch-based nanoporous carbon material of this embodiment is mainly made of the following raw materials: 5 g of pitch, 20 g of anhydrous aluminum trichloride, 250 ml of anhydrous carbon tetrachloride, and 300 ml of a reaction terminator. The reaction terminator is a mixture of ethanol and water.

[0049] The pitch-based nanoporous carbon material of this embodiment is prepared by the following method:

[0050] 1) Add 5g of asphalt into 200ml of anhydrous carbon tetrachloride, stir and dissolve to obtain mixture A;

[0051] 2) the anhydrous aluminum trichloride of 20g is placed in the reaction kettle, in the anhydrous carbon tetrachloride of adding 50ml (the total consumption of anhydrous carbon tetrachloride is 250ml), after the anhydrous aluminum trichloride dissolves, Add step 1) obtained mixture A again, heat to 50 ℃ under stirring condition, reflux and carry out Friedel-Crafts reaction, after reacting for 24h, add the mixed solution of the ethanol of 300ml and ...

Embodiment 2

[0064] The pitch-based nanoporous carbon material of this embodiment is mainly made of the following raw materials: 10 g of pitch, 50 g of anhydrous aluminum trichloride, 400 ml of anhydrous carbon tetrachloride, and 500 ml of a reaction terminator. The reaction terminator is a mixture of ethanol and water.

[0065] The pitch-based nanoporous carbon material of this embodiment is prepared by the following method:

[0066] 1) Add 10 g of asphalt into 300 ml of anhydrous carbon tetrachloride, stir and dissolve to obtain mixture A;

[0067] 2) the anhydrous aluminum trichloride of 50g is placed in the reaction kettle, in the anhydrous carbon tetrachloride of adding 100ml (the total consumption of anhydrous carbon tetrachloride is 400ml), after the anhydrous aluminum trichloride dissolves, Add step 1) gained mixture A again, heat to 75 ℃ under stirring condition, reflux and carry out Friedel-Crafts reaction, after reacting for 48h, add the mixed solution of the ethanol of 500ml a...

Embodiment 3

[0079] The pitch-based nanoporous carbon material of this embodiment is mainly made of the following raw materials: 0.1 g of pitch, 3 g of anhydrous aluminum trichloride, 100 ml of anhydrous carbon tetrachloride, and 200 ml of a reaction terminator. The reaction terminator is a mixture of ethanol and water.

[0080] The pitch-based nanoporous carbon material of this embodiment is prepared by the following method:

[0081] 1) Add 0.1 g of asphalt into 6 ml of anhydrous carbon tetrachloride, stir and dissolve to obtain mixture A;

[0082] 2) 3g of anhydrous aluminum trichloride is placed in the reaction kettle, add in the anhydrous carbon tetrachloride of 94ml (the total consumption of anhydrous carbon tetrachloride is 100ml), after the anhydrous aluminum trichloride dissolves, Then add step 1) obtained mixture A, heat to 30 DEG C under stirring condition, reflux to carry out Friedel-Crafts reaction, after reacting for 72h, add the mixed solution of ethanol and double-distilled...

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Abstract

The invention discloses an asphalt-based nanoporous carbon material, a negative material thereof, and a lithium ion battery. The asphalt-based nanoporous carbon material is prepared by mainly using 0.1-10g of asphalt, 3-50g of anhydrous aluminum trichloride, 100-400ml of anhydrous carbon tetrachloride and 200-500ml of a reaction terminating agent, and the amounts of the above raw materials can be freely adjusted in proportion. The asphalt-based nanoporous carbon material is prepared by mainly using asphalt, anhydrous aluminum chloride, anhydrous carbon tetrachloride and the reaction termination agent, and asphalt and anhydrous carbon tetrachloride undergo a Friedel-Crafts crosslinking reaction through a nanometer pore forming technology, so the obtained asphalt-based carbon material has a porous structure and a high specific surface area, and the negative material prepared by using the asphalt-based nanoporous carbon material has the characteristics of strong electrolyte imbibition and retention ability, good processing performance, low price and the like, and can greatly improve the cycle performances of the lithium ion battery.

Description

technical field [0001] The invention belongs to the technical field of porous carbon materials, specifically relates to a pitch-based nano-porous carbon material, and also relates to a negative electrode material and a lithium ion battery using the porous carbon material. Background technique [0002] Anode materials are the main components of lithium-ion batteries, and have an important impact on the cycle performance, safety performance and rate performance of lithium-ion batteries. The market requires negative electrode materials to have good cycle performance, processing performance and excellent liquid absorption capacity. Due to the small specific surface area of ​​the graphite-based negative electrode materials currently used in the market, the material has poor liquid absorption capacity and average cycle performance. Therefore, developing a negative electrode material with a large specific surface area has become the choice to improve the performance of the negative...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/583H01M10/0525
CPCB82Y30/00C01B32/15H01M4/587H01M10/0525Y02E60/10
Inventor 付万群李玉峰付世敏
Owner HENAN ZHONGLIAN GAOKE NEW ENERGY
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