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Preparation method of sodium ion battery graphene/Sb2S3/carbon composite material

A sodium-ion battery, carbon composite material technology, applied in battery electrodes, secondary batteries, circuits, etc., can solve the problems of low conductivity, easily damaged structure, large volume change, etc., and achieve high conductivity and good structural stability. Sexual, high-capacity effects

Inactive Publication Date: 2017-09-22
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this type of material has low electrical conductivity on the one hand, and on the other hand, its volume changes greatly during charging and discharging, and its structure is easily destroyed, resulting in poor cycle performance.

Method used

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  • Preparation method of sodium ion battery graphene/Sb2S3/carbon composite material
  • Preparation method of sodium ion battery graphene/Sb2S3/carbon composite material
  • Preparation method of sodium ion battery graphene/Sb2S3/carbon composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Disperse 30mg of graphite oxide in 10ml of ethylene glycol, sonicate for 3h, dissolve 0.225g of SbCl 3 Dissolve in 7ml of ethylene glycol, stir for 0.5h, add to GO dispersion, stir for 2h, add 0.115g of thioacetamide, react at 180°C for 20h, wash and dry, dissolve the obtained solid in 12ml of ethylene glycol In the middle, ultrasonic for 3 hours, add 0.1g of glucose, stir for 1 hour, react at 180°C for 10 hours to obtain the composite material, wash and dry, place in a tube furnace and heat up under the protection of an inert gas. The heating rate is 5°C / min, and the heat treatment temperature at 500°C, the holding time is 5h, and the graphene / Sb 2 S 3 / carbon composite.

Embodiment 2

[0026] Disperse 30mg of graphite oxide in 10ml of ethylene glycol, sonicate for 3h, dissolve 0.225g of SbCl 3 Dissolve in 7ml of ethylene glycol, stir for 0.5h, add to GO dispersion, stir for 2h, add 0.115g of thioacetamide, react at 180°C for 20h, wash and dry, dissolve the obtained solid in 12ml of ethylene glycol In the middle, ultrasonic for 3 hours, add 0.2g glucose, stir for 1 hour, react at 180°C for 10 hours to obtain the composite material, wash and dry, place in a tube furnace and heat up under the protection of inert gas, the heating rate is 5°C / min, the heat treatment temperature at 500°C, the holding time is 5h, and the graphene / Sb 2 S 3 / carbon composite.

Embodiment 3

[0028] Disperse 40mg of graphite oxide in 10ml of ethylene glycol, sonicate for 3h, dissolve 0.225g of SbCl 3 Dissolve in 7ml of ethylene glycol, stir for 0.5h, add to GO dispersion, stir for 2h, add 0.115g of thiourea, react at 180°C for 20h, wash and dry, dissolve the obtained solid in 12ml of ethylene glycol, Sonicate for 3 hours, add 0.2g glucose, stir for 1 hour, react at 180°C for 10 hours to obtain a composite material, wash and dry, place in a tube furnace and heat up under the protection of an inert gas. The heating rate is 5°C / min, and the heat treatment temperature is 500°C. ℃, the holding time is 5h, and the graphene / Sb 2 S 3 / carbon composite.

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Abstract

A preparation method of a sodium ion battery graphene / Sb2S3 / carbon composite material comprises the steps of adding graphite oxide into an ethylene glycol solution, performing ultrasonic dispersion to obtain a GO dispersion liquid, dissolving SbCl3 in ethylene glycol, and performing mixing to obtain a SbCl<3>-Go precursor liquid; and adding a sulfur source into the SbCl<3>-Go precursor liquid, performing a solvothermal reaction, washing the obtained material, performing drying to obtain a solid, dissolving the obtained solid in the ethylene glycol, adding a carbon source, continuing reaction to obtain a composite material precursor, and performing calcination in a tubular furnace under protection of inertia atmosphere after washing and drying to obtain the graphene / Sb2S3 / carbon composite material. By a simple hydrothermal method, graphene and amorphous carbon are combined to prepare the graphene / Sb2S3 / carbon composite material with high conductivity and favorable structural stability, and the graphene / Sb2S3 / carbon composite material is applied to a sodium ion battery and has important significance to design and preparation of a sodium ion battery electrode material.

Description

technical field [0001] The invention belongs to the technical field of sodium ion batteries, and relates to a sodium ion battery graphene / Sb 2 S 3 / Preparation method of carbon composite material. Background technique [0002] With the development of society, people's demand for energy is increasing, while non-renewable energy sources such as oil and natural gas are becoming exhausted, and the emerging new energy sources (wind energy, solar energy) are discontinuous, so energy storage devices are needed to store energy. People are doing more and more research on batteries, and lithium-ion batteries have been commercialized and widely used in portable products such as mobile phones and computers. The rapid development of society also makes people's demand for lithium-ion batteries more and more, so the performance requirements of lithium-ion batteries are getting higher and higher. It is necessary to ensure good safety and cycle stability, and to meet the needs of large-s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/58H01M4/62H01M10/054
CPCH01M4/364H01M4/5815H01M4/625H01M10/054Y02E60/10
Inventor 颜洋潘珍珍张亚博牟文生郝晓凤孙同睿于淇
Owner DALIAN UNIV OF TECH
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