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High-performance carbon negative electrode PTCDA hard carbon material and preparation method thereof

A carbon negative electrode, high-performance technology, applied in the direction of carbon preparation/purification, negative electrode, active material electrode, etc., can solve the problems of limited application, increase of lithium ion diffusion resistance, poor rate performance of layered graphite negative electrode, etc., to achieve preparation The method is simple, easy for industrial production, and the effect of low sintering temperature

Inactive Publication Date: 2021-04-30
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for layered graphite anode materials, in addition to the above disadvantages, the interlayer spacing is relatively small, so that lithium ions can only be inserted from the end face of the material, which will inevitably increase the diffusion resistance of lithium ions, and eventually lead to the multiplier ratio of layered graphite anodes. Poor performance limits its application in high-power batteries

Method used

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  • High-performance carbon negative electrode PTCDA hard carbon material and preparation method thereof
  • High-performance carbon negative electrode PTCDA hard carbon material and preparation method thereof
  • High-performance carbon negative electrode PTCDA hard carbon material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.

[0025] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.

[0026] Step 3, carbonization: reach 1000°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.

[0027] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.

Embodiment 2

[0029] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.

[0030] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.

[0031] Step 3, carbonization: reach 1050°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.

[0032] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.

Embodiment 3

[0034] Step 1: Dissolve about 20g of perylenetetracarboxylic dianhydride in a porcelain boat with enough NMP (add in several times), cover the porcelain boat and put it in an oven at 100°C for 24h-48h.

[0035] In step 2, heat at a room temperature of 30° C. at a rate of 3° C. / min to 530° C. over 167 minutes, and keep the temperature for 2 hours.

[0036] Step 3, carbonization: reach 1100°C at a rate of 2°C / min, keep the temperature for 2 hours, and cool down to room temperature as the negative electrode material of perylenetetracarboxylic dianhydride.

[0037] In step 4, the obtained perylene tetracarboxylic dianhydride negative electrode material is ground and passed through a 300-mesh sieve to obtain an extremely fine perylene tetracarboxylic dianhydride negative electrode material.

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Abstract

The invention discloses a high-performance carbon negative electrode PTCDA hard carbon material and a preparation method thereof, a product can be prepared by solid-phase sintering of perylenetetracarboxylic dianhydride, i.e., a blocky carbon material is obtained by high-temperature sintering of a perylenetetracarboxylic dianhydride negative electrode material under an inert gas, and the perylenetetracarboxylic dianhydride is directly sintered into a carbon material, so that the used raw materials are simple, other doping materials, such as graphite, etc., are not needed, the industrial production cost is low, raw materials are easy to obtain, and the preparation method is simple, environment-friendly and non-toxic. The carbon material is obtained by directly sintering perylenetetracarboxylic dianhydride, the preparation process is low in sintering temperature, is easier to realize, is simple to control and is easier for industrial production, and the obtained PTCDA organic carbon shows good cycle performance and capacity property when being used as a negative electrode material of a lithium ion battery and has better cycle stability compared with the traditional graphite.

Description

technical field [0001] The invention belongs to functional material technology, and relates to a high-performance carbon negative electrode PTCDA hard carbon material and a preparation method thereof. Background technique [0002] Lithium-ion batteries have good energy storage characteristics and are widely used in mobile communications, information technology, consumer electronics, mobile vehicles and other fields. With the progress and development of human society, higher capacity, better rate performance and longer service life are required for advanced lithium-ion batteries. Among the various components of lithium-ion batteries, electrode materials are the key factors restricting the performance of lithium-ion batteries. Among them, the anode material, as an important part of the lithium-ion battery, has an important impact on the electrochemical performance of the lithium-ion battery. Among the positive electrode materials of lithium-ion batteries, carbon materials ha...

Claims

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Application Information

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IPC IPC(8): H01M4/583H01M10/0525C01B32/05
CPCC01B32/05H01M4/583H01M10/0525H01M2004/027Y02E60/10
Inventor 饶先发陈军钟盛文楼轶韬肖泽恩李宝宝彭伟况磊吴婷婷
Owner JIANGXI UNIV OF SCI & TECH
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