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Preparation method of modified graphene superconducting material for new energy

A technology of superconducting materials and graphene, which is applied in the usage of superconducting elements, superconducting devices, cable/conductor manufacturing, etc., can solve the problems of high equipment requirements, high complexity and difficulty, uneven texture, etc., and achieve compact texture, The effect of high critical temperature

Inactive Publication Date: 2018-04-20
叶芳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing high-temperature synthesis of superconducting materials is generally complex and difficult, or requires high equipment, uneven texture, and difficult to increase the critical temperature

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] S1: Stir and mix 1 part of lithium oxide, 2 parts of rubidium oxide and 1 part of yttrium oxide; then add 10 parts of 35% nitric acid solution and mix and stir for 10 minutes; then add 15 parts of 0.25mol / L citric acid and stir and mix at room temperature for 2 hours;

[0021] S2: After the stirring and mixing are completed, add the ammonia solution with a mass concentration of 10% to the solution obtained in step S1 dropwise, adjust the pH of the mixed solution to 7.0, stir and mix for 10 minutes, and then rotary evaporate at 75°C to 1 / 3 of the original volume. Prepare the mixed gel solution, dry the mixed gel solution at 160°C for 3 hours, and prepare the mixed powder after grinding;

[0022] S3: Put 8 parts of graphene oxide in 25 parts of ethanol, and ultrasonically disperse to obtain a graphene oxide solution. The power of ultrasonic dispersion is 1500W, and the time of ultrasonic dispersion is 25min; add the mixed powder obtained in step S2 to the graphene oxide so...

Embodiment 2

[0024] S1: Stir and mix 4 parts of lithium oxide, 5 parts of rubidium oxide and 3 parts of yttrium oxide; then add 15 parts of 35% nitric acid solution and mix and stir for 20 minutes; then add 25 parts of 0.35mol / L citric acid and stir and mix at room temperature for 3 hours;

[0025] S2: After the stirring and mixing are completed, add the ammonia solution with a mass concentration of 10% to the solution obtained in step S1 dropwise, adjust the pH of the mixed solution to 7.0, stir and mix for 20 minutes, and then rotary evaporate at 90°C to 3 / 5 of the original volume. Prepare the mixed gel solution, dry the mixed gel solution at 170°C for 6 hours, and prepare the mixed powder after grinding;

[0026] S3: Put 12 parts of graphene oxide in 30 parts of ethanol, and ultrasonically disperse to obtain a graphene oxide solution. The power of ultrasonic dispersion is 2500W, and the time of ultrasonic dispersion is 45min; add the mixed powder obtained in step S2 to the graphene oxide...

Embodiment 3

[0028] S1: Stir and mix 2 parts of lithium oxide, 4 parts of rubidium oxide and 1 part of yttrium oxide; then add 12 parts of 35% nitric acid solution and mix and stir for 12 minutes; then add 18 parts of 0.28mol / L citric acid and stir and mix at room temperature for 2.5 hours ;

[0029] S2: After the stirring and mixing are completed, add the ammonia solution with a mass concentration of 10% to the solution obtained in step S1 dropwise, adjust the pH of the mixed solution to 7.0, stir and mix for 15 minutes, and then rotary evaporate at 80°C to 2 / 5 of the original volume. Prepare the mixed gel solution, dry the mixed gel solution at 162°C for 3.5 hours, and prepare the mixed powder after grinding;

[0030] S3: Put 10 parts of graphene oxide in 27 parts of ethanol, and ultrasonically disperse to obtain a graphene oxide solution. The power of ultrasonic dispersion is 1800W, and the time of ultrasonic dispersion is 30min; add the mixed powder obtained in step S2 to the graphene ...

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Abstract

The invention discloses a preparation method of a modified graphene superconducting material for new energy. The preparation method comprises the following steps: stirring and mixing lithium oxide, rubidium oxide and yttrium oxide; then adding a 35% nitric solution to be mixed and stirred for 10-20min; then adding 0.25-0.35mol / L of citric acid to be stirred and mixed for 2-3h at room temperature;after stirring and mixing, dropwise adding 10% by mass of ammonia water solution into the solution to adjust the pH of the mixed solution to 7.0, stirring and mixing the solution for 10-20min, rotatably evaporating the solution to 1 / 3-3 / 5 of original size at 75-90 DEG C to prepare a mixed gel solution, putting the mixed gel solution at 160-170 DEG C to be dried for 3-6h, and grinding the solutionto prepare mixed powder; putting graphene oxide into ethanol, and carrying out ultrasonic dispersion to obtain a graphene oxide solution; adding the mixed powder into the graphene oxide solution and stirring the mixture for 15-25min at 50-70 DEG C; and carrying out filtration and drying, raising the temperature to 750-850 DEG C at a speed of 20-40 DEG C / min for thermal treatment in a reductive atmosphere, and carrying out an insulating reaction for 20-40min to obtain the modified graphene superconducting material.

Description

technical field [0001] The invention belongs to the field of new energy materials, in particular to a preparation method of a modified graphene superconducting material for new energy. Background technique [0002] Superconductivity is one of the most amazing phenomena in the physical world. Generally, the resistance of superconducting alloys drops to zero when it is close to absolute zero and enters the superconducting state. High-temperature superconductivity means that the resistance of a material suddenly drops to zero at a relatively high critical temperature. It has a completely different physical mechanism and a wider range. application prospects. In 1986, physicists discovered the cuprate high-temperature superconductor, which won the Nobel Prize in Physics the following year. Since then, scientists have never stopped exploring new high-temperature superconducting materials. While pursuing higher critical temperatures, physicists have been working hard to reveal th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/194H01B12/00H01B13/00
CPCH01B12/00H01B13/00H01B13/0016Y02E40/60
Inventor 叶芳
Owner 叶芳
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