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A manufacture method of carbon-based metal nitrides, and carbonide supercapacitance material

A technology of nitrides and carbides, which is applied in the field of preparation of supercapacitor electrode materials, can solve the problems of no preparation of metal nitrides and carbide materials, no preparation methods of carbon-based metal nitrides, etc., and achieve easy implementation and large specific capacitance. , The effect of polarization preparation process

Inactive Publication Date: 2007-10-24
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no method for preparing metal nitride and carbide materials using pregel as a dispersion medium, and there is no preparation method for carbon-based metal nitride and carbide materials with high specific capacitance.

Method used

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  • A manufacture method of carbon-based metal nitrides, and carbonide supercapacitance material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The molar ratio R / F of resorcinol to formaldehyde is 0.4, the molar ratio R / C of resorcinol to additive sodium acetate is 50, the mass ratio of resorcinol to added water is 0.1, potassium metavanadate (KVO 3 ) to a mass ratio of resorcinol of 0.7. Dissolve resorcinol in deionized water, then add additive sodium acetate, then add formaldehyde solution, and mix well. placed in a sealed reactor. The constant temperature was 85°C, and after 0.3 hours, potassium metavanadate (KVO 3 ), mixed evenly, and the solution became a hydrogel after 3 hours. Adjust the temperature of hydrazine to 80° C., pass ammonia gas through the hydrazine, and the nitriding gas that comes out is a mixture of ammonia and hydrazine, wherein the mass content of hydrazine is 6%. Under the action of nitriding gas, keep the temperature at 850°C for 6 hours to obtain the product—carbon-based vanadium nitride with high specific surface area. at 1% O 2 Passivation in ammonia gas for 5 hours, and then ...

Embodiment 2

[0039] The molar ratio R / F of resorcinol and formaldehyde is 0.5, the mol ratio R / C of resorcinol and additive sodium acetate is 100, the mass ratio of resorcinol and the water that adds is 0.2, manganese chloride ( MnCl 2 ) to a mass ratio of resorcinol of 0.7. Dissolve resorcinol in deionized water, then add additive sodium acetate, then add formaldehyde solution, and mix well. placed in a sealed reactor. The constant temperature was 80°C, and after 1 hour, manganese chloride (MnCl 2 ), mixed evenly, and the solution became a hydrogel after 7 hours. The nitriding gas is a mixed gas of ammonia and hydrazine (wherein the mass content of hydrazine is 6%), at 800° C., at a constant temperature for 2 hours, to obtain the product—carbon-based manganese nitride with high specific surface area. at 0.2% O 2 Passivation in ammonia gas for 5 hours, and then put the sample in a desiccator for later use.

[0040] A three-electrode system was used to test the specific capacitance of...

Embodiment 3

[0042] The mol ratio R / F of resorcinol and formaldehyde is 0.4, the mol ratio R / C of resorcinol and additive sodium acetate is 200, the mass ratio of resorcinol and the water that adds is 0.2, ammonium molybdate ( (NH 4 ) 6 Mo 7 o 24 4H 2The mass ratio of O) to resorcinol is 0.1. Dissolve resorcinol in deionized water, then add additive sodium acetate, then add formaldehyde solution, and mix well. placed in a sealed reactor. The constant temperature was 80°C, and after 2 hours, ammonium molybdate ((NH 4 ) 6 Mo 7 o 24 4H 2 0), mix homogeneously, and then become hydrogel through 18 hours solution. Nitriding gas is ammonia and ethylenediamine (wherein the mass content of ethylenediamine is 5%) (H 2 NCH 2 CH 2 NH 2 ) mixed gas at 900°C for 3.5 hours at a constant temperature to obtain the product—carbon-based molybdenum nitride with high specific surface area. at 0.5% O 2 Passivation in ammonia gas for 5 hours, and then put the sample in a desiccator for later use...

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Abstract

The preparation method for super-capacitance material comprises: with meta-dihydroxybenzene and formaldehyde as the reacting material, with sodium acetate or sodium propionate or the mixture as additive, adding transition metal oxide during the gelling to obtain the uniform distributed RF aqueous gel with rich transition metal salt; then, with N2 or H2, drying on common pressure, and charring to obtain the final product with 400F / g-870F / g capacity.

Description

technical field [0001] The invention relates to a preparation method of an electrode material for a supercapacitor, more specifically a method for preparing a carbon-based metal nitride or carbide supercapacitor material. Background of the invention [0002] Supercapacitor is a new type of power electronic component, which overcomes the disadvantages of low specific energy of ordinary capacitors, and also overcomes the disadvantages of low specific power of batteries and the inability to discharge large currents. It is safe and reliable, has a wide range of applications, is green and environmentally friendly, and does not produce pollution. It has extremely important and broad application prospects in many fields such as information technology, electric vehicles, aerospace and national defense technology. [0003] The electrode material is a key factor in determining the capacitance of a supercapacitor. The capacitance of electrode materials ...

Claims

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Application Information

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IPC IPC(8): H01G9/042H01M4/04H01M14/00H01B13/00
CPCY02E60/13Y02E60/10
Inventor 李学良韩昌隆陈祥迎史成武张大伟
Owner HEFEI UNIV OF TECH
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