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Preparation method and application of resorcinol formaldehyde resin-based hard carbon material

A resorcinol-formaldehyde resin and resorcinol technology, which is applied in the preparation of resorcinol-formaldehyde resin-based hard carbon materials and the application field of sodium-ion battery negative electrode materials, can solve the problem of low coulombic efficiency and carbon residue rate Low-level problems, to achieve the effect of simple equipment, high activity, and stable product performance

Pending Publication Date: 2021-06-22
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of hard carbon as a negative electrode material for sodium-ion batteries faces several problems, such as low initial Coulombic efficiency and low carbon residue rate, etc.

Method used

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  • Preparation method and application of resorcinol formaldehyde resin-based hard carbon material
  • Preparation method and application of resorcinol formaldehyde resin-based hard carbon material
  • Preparation method and application of resorcinol formaldehyde resin-based hard carbon material

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 3 g of omestically benzene, 3.3 g of water was poured into three flasks. After all of the benzene phenol dissolved, 0.2 g of ammonia water and 2.21 g (37%, 50 wt%) formaldehyde were added, and the remaining 2.21 was added after 10 minutes. G (50 wt%) formaldehyde was reacted at 40 ° C for 1 h to give a mexyphenol formaldehyde resin solution. The resulting resolved phenol formaldehyde resin solution was mixed with a certain amount of distilled water to obtain a spray liquid having a solid content of 3%. The spray liquid was sprayed and dried, and the obtained carbon material precursor was cured at 150 ° C for 24 hours, and then a resolved-benzolordehyde resin-based hard carbon negative electrode material was obtained at 900 ° C for 3 hours under the protection of nitrogen. (RFHC- 900).

Embodiment 2

[0031] 3 g of omestically benzene, 3.3 g of water was poured into three flasks. After all of the benzene phenol dissolved, 0.2 g of ammonia water and 2.21 g (37%, 50 wt%) formaldehyde were added, and the remaining 2.21 was added after 10 minutes. G (50 wt%) formaldehyde was reacted at 40 ° C for 1 h to give a mexyphenol formaldehyde resin solution. The resulting resolved phenol formaldehyde resin solution was mixed with a certain amount of distilled water to obtain a spray liquid having a solid content of 3%. The spray liquid was spray dried, and the obtained carbon material precursor was cured at 150 ° C for 24 hours, then 1100 ° C carbonized at 1100 ° C for 3 hours under the protection of nitrogen, and then obtained a neutral phenol formaldehyde resin-based hard carbon negative electrode material (RFHC- 1100).

Embodiment 3

[0033] 3 g of omestically benzene, 3.3 g of water was poured into three flasks. After all of the benzene phenol dissolved, 0.2 g of ammonia water and 2.21 g (37%, 50 wt%) formaldehyde were added, and the remaining 2.21 was added after 10 minutes. G (50 wt%) formaldehyde was reacted at 40 ° C for 1 h to give a mexyphenol formaldehyde resin solution. The resulting resolved phenol formaldehyde resin solution was mixed with a certain amount of distilled water to obtain a spray liquid having a solid content of 3%. The spray liquid was spray dried, and the obtained carbon material precursor was cured at 150 ° C for 24 hours, and then a beta-phenol formaldehyde resin-based hard carbon negative electrode material was obtained at 1300 ° C for 3 hours under the protection of nitrogen. (RFHC- 1300).

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Abstract

The invention discloses a preparation method of a resorcinol formaldehyde resin-based hard carbon material, and a negative electrode material used as a sodium-ion battery. The resorcinol formaldehyde resin is synthesized by taking resorcinol and formaldehyde as monomer raw materials; and then the resorcinol formaldehyde resin-based hard carbon material is prepared through spray drying and pyrolysis carbonization methods. The material has large interlayer spacing and good spherical morphology, and the preparation process is simple, the yield is high, the speed is high, and large-scale production is easy to achieve. As the negative electrode material of the sodium-ion battery, the resorcinol formaldehyde resin-based hard carbon material has excellent electrochemical performance.

Description

Technical field [0001] The present invention belongs to the technical field of the battery material, and more particularly to a method for preparing a mephenol formaldehyde resin-based hard carbon material and an application in a negative electrode material of sodium ion battery. Background technique [0002] In recent years, the development and utilization of new energy is increasingly become a trend. The lithium-ion battery is used in portable electronic devices such as mobile phones, laptops, etc. due to high energy density, long cycle life, high operating voltage, no memory effect, and other portable electronic devices and electric vehicles and grid energy storage systems. However, as people's demand for these electronic devices and electric vehicles is getting bigger and bigger, some corresponding problems have emerged, such as lack of lithium resources, and cost. Therefore, the sodium ion battery with a lithium ion battery has a similar working principle successfully attrac...

Claims

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Application Information

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IPC IPC(8): C01B32/05H01M4/587H01M10/054
CPCC01B32/05H01M4/587H01M10/054Y02E60/10
Inventor 张庆印邓仙梅时志强
Owner TIANJIN POLYTECHNIC UNIV
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