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Preparation method of self-supporting double carbon structure compounding Ga2O3 lithium ion battery anode

A lithium-ion battery and carbon structure technology, applied in the field of electrochemical power supply, can solve problems such as unreported, and achieve the effects of good repeatability, good conductivity and flexibility, and simple and controllable preparation method

Active Publication Date: 2019-02-01
CHINA THREE GORGES UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Combining the advantages of both is expected to further enhance the Ga 2 o 3 Electrochemical properties of the negative electrode, but the relevant ideas have not been reported

Method used

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  • Preparation method of self-supporting double carbon structure compounding Ga2O3 lithium ion battery anode
  • Preparation method of self-supporting double carbon structure compounding Ga2O3 lithium ion battery anode
  • Preparation method of self-supporting double carbon structure compounding Ga2O3 lithium ion battery anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Weigh 0.5g of polyvinyl butyral and dissolve it in 10ml of ethanol, stir at a constant temperature of 60°C until a uniform colloidal solution is formed, and cool to room temperature; weigh 1.024g of gallium nitrate, 0.7009g of hexamethylenetetramine In the above colloidal solution, stir until completely dissolved to form a precursor solution; put the precursor solution into a plastic syringe, carry out the electrospinning process, use the tinfoil on the drum receiver to collect the fiber bundles, and the drum receiver The distance from the needle is 13cm, the working voltage range and the solution advancing rate are set to 9.8kV, 0.4mm min -1 ; The collected fiber bundles were dried in an oven at 70°C and then sintered in a tube furnace at 550°C under nitrogen for 5 hours to obtain carbon composite Ga grown on the surface of C fibers 2 o 3 Composite structure. The samples were characterized by XRD, such as figure 1 As shown, Ga 2 o 3 (XRD card JCPDS, NO. 85-0988) h...

Embodiment 2

[0030] Weigh 0.5g of polyvinyl butyral and dissolve it in 10ml of ethanol, stir at a constant temperature of 60°C until a uniform colloidal solution is formed, and cool to room temperature; weigh 1.024g of gallium nitrate, 0.7009g of hexamethylenetetramine In the above colloidal solution, stir until completely dissolved to form a precursor solution; put the precursor solution into a plastic syringe, carry out the electrospinning process, use the tinfoil on the drum receiver to collect the fiber bundles, and the drum receiver The distance from the needle is 13cm, the working voltage range and the solution advancing rate are set to 9.8kV, 0.4mm min -1 ; The collected fiber bundles were dried in an oven at 70°C and then sintered in a tube furnace at 450°C under nitrogen for 5 hours to obtain carbon composite Ga grown on the surface of C fibers 2 o 3 Composite structure. The battery was assembled according to the method of Example 1. Figure 4 shows that the carbon-composite Ga2...

Embodiment 3

[0032] Weigh 0.5g of polyvinyl butyral and dissolve it in 10ml of ethanol, stir at a constant temperature of 60°C until a uniform colloidal solution is formed, and cool to room temperature; weigh 1.024g of gallium nitrate, 0.7009g of hexamethylenetetramine In the above colloidal solution, stir until completely dissolved to form a precursor solution; put the precursor solution into a plastic syringe, carry out the electrospinning process, use the tinfoil on the drum receiver to collect the fiber bundles, and the drum receiver The distance from the needle is 13cm, the working voltage range and the solution advancing rate are set to 9.8kV, 0.4mm min -1 ; The collected fiber bundles were dried in an oven at 70°C and then sintered in a tube furnace at 650°C under nitrogen for 5h to obtain a carbon-composite Ga2O3 composite structure grown on the surface of C fibers. The battery was assembled according to the method of Example 1. Figure 5 It shows that the surface of C fiber prep...

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Abstract

The invention provides a preparation method of a self-supporting double carbon structure compounding Ga2O3 lithium ion battery anode and particularly relates to a lithium ion battery anode that a carbon compounding Ga2O3 composite structure grows on the surface of self-supporting carbon fibers. The method includes: 1) weighing polyvinyl butyral and dissolving it in ethanol with stirring until a homogeneous colloidal solution is formed; 2) adding and dissolving gallium nitrate and hexamethylenetetramine in the colloidal solution with stirring until the components are completely dissolved to form a precursor solution; 3) placing the precursor solution in a plastic injector and performing electrostatic spinning jet process, wherein a fiber bundle is collected by a tin foil paper on a roller receiver; 4) drying the collected fiber bundle, and sintering the fiber bundle in a tubular furnace in the presence of nitrogen to obtain the structure that carbon compounding Ga2O3 composite grows onthe surface of carbon fibers. The composite structure can be applied to the lithium ion battery anode and shows excellent electrochemical performances, so that the structure has great application prospect.

Description

technical field [0001] The invention relates to a new type of lithium ion battery negative electrode, in particular to a self-supporting C fiber surface growth carbon composite Ga 2 o 3 The invention relates to a method for preparing a composite structure, which belongs to the field of electrochemical power sources. technical background [0002] Energy is the cornerstone of social and economic development. The rapid development of social economy has also brought serious energy shortages and environmental pollution. It forces people to think about how to efficiently use the new clean energy and renewable clean energy that have the characteristics of randomness and intermittency on the earth. Among them, the development of high-performance energy conversion devices and energy storage devices is the key to efficient use of energy. As a typical energy storage device, lithium-ion batteries are widely used in the field of electrochemical energy storage due to their advantages o...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/583H01M4/62H01M4/48H01M10/0525
CPCH01M4/36H01M4/48H01M4/583H01M4/625H01M10/0525Y02E60/10
Inventor 倪世兵陈启长郑斌杨学林
Owner CHINA THREE GORGES UNIV
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