Nitrogen and phosphorus co-doped composite material, preparation method and application and capacitor electrode

A technology of capacitor electrodes and composite materials, which is used in the manufacture of hybrid capacitor electrodes and hybrid/electric double layer capacitors, etc., can solve the problems of low energy density, limited application and industrialized production, high current charge-discharge difference, etc., and achieve excellent electrical performance. , the effect of huge application potential and industrial value

Active Publication Date: 2017-05-10
永嘉跃龙密封件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

in 300g -1 Under this condition, the specific capacitance is still 269.04F·g -1 , the energy density is still 45.50wh·kg -1 , but poor cycle stability
[0013] As mentioned above, the prior art discloses a variety of methods of using biomass to prepare new materials, and thus obtains a variety of new materials with excellent electrical properties, but these

Method used

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  • Nitrogen and phosphorus co-doped composite material, preparation method and application and capacitor electrode
  • Nitrogen and phosphorus co-doped composite material, preparation method and application and capacitor electrode
  • Nitrogen and phosphorus co-doped composite material, preparation method and application and capacitor electrode

Examples

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Example Embodiment

[0060] Example 1

[0061] S1: Mix egg yolk, deionized water and potassium ferricyanide, and ultrasonicate for 30 minutes; wherein the mass ratio of egg yolk, deionized water and potassium ferricyanide is 1:10:5;

[0062] S2: After the ultrasound is finished, dissolve for 30 minutes while stirring;

[0063] S3: After stirring and dissolving, fully dry at 120°C for 19 hours to obtain a crude product;

[0064] S4: The crude product is calcined at a high temperature at 1000° C. for 2 hours under the protection of nitrogen gas to obtain a composite material of nitrogen and phosphorus co-doped carbon nanotubes encapsulating iron compound, which is named M1.

Example Embodiment

[0065] Example 2-3: Investigation of high temperature treatment temperature in step S4

[0066] Except that the high-temperature calcination treatment temperature in step S4 was replaced with 900°C and 1100°C, other operations were the same, so the operation of Example 1 was repeated, so that Example 2-3 was carried out sequentially, and the resulting composite materials were named sequentially For M2 and M3.

Example Embodiment

[0067] Example 4: Investigation when no iron compound is added in step S1

[0068] Except that the potassium ferricyanide in step S1 is omitted, other operations are the same, so that the operation of Example 1 is repeated to obtain Example 4, and the obtained material is named M4.

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Abstract

The invention relates to a preparation method of a nitrogen and phosphorus co-doped carbon nanotube-coated iron compound composite material. The method comprises the following steps of (S1) mixing egg yolk, deionized water and an iron compound and carrying out ultrasonic treatment for 20-40 minutes; (S2) after ultrasonic treatment is completed, dissolving for 20-40 minutes while stirring; (S3) after stirring and dissolving are completed, fully drying completely at 100-140 DEG C to obtain a crude product; and (S4) carrying out high-temperature roasting treatment on the crude product under inert gas protection to obtain the nitrogen and phosphorus co-doped carbon nanotube-coated iron compound composite material. The invention further relates to a composite material and a capacitor electrode prepared from the composite material. The composite material has excellent electrical properties, can be applied to the field of preparation of a capacitor, especially the capacitor electrode, and has good application prospect and industrialization potential.

Description

technical field [0001] The present invention relates to a composite material and its preparation method, use and products prepared therefrom. More specifically, it provides a nitrogen-phosphorus co-doped composite material, its preparation method, use and capacitor electrodes prepared therefrom, belonging to Inorganic functional materials and electrochemical energy technology fields. Background technique [0002] In recent years, the shortage of petrochemical resources and the sharp increase in environmental protection pressure have formed irreconcilable contradictions with the needs of rapid economic growth, seriously affecting my country's economic and social development and national security. It is estimated that by 2050, the global energy demand will be at least twice the current demand, so adopting sustainable and renewable energy is an urgent and arduous task. [0003] Correspondingly, the use of petrochemical resources leads to environmental pollution, and energy con...

Claims

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Application Information

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IPC IPC(8): H01G11/36H01G11/46H01G11/30H01G11/26H01G11/86
CPCY02E60/13H01G11/36H01G11/26H01G11/30H01G11/46H01G11/86
Inventor 金辉乐王舜苏晓霞董小妹王继昌罗茂君张晶晶徐晓菁杨超吴斌朱天麒
Owner 永嘉跃龙密封件有限公司
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