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Method for producing composite porous material containing metal-carbon-nitrogen

A technology of porous materials and metals, applied in the field of energy material preparation, can solve the problems of difficult preparation of sulfur cathode and poor conductivity of sulfur, and achieve the effect of being beneficial to electrochemical reaction, low cost and simple method

Inactive Publication Date: 2016-08-03
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the extremely poor conductivity of sulfur, the preparation of sulfur cathodes has always been a major problem for people.

Method used

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  • Method for producing composite porous material containing metal-carbon-nitrogen
  • Method for producing composite porous material containing metal-carbon-nitrogen
  • Method for producing composite porous material containing metal-carbon-nitrogen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Step 1, first dissolve 0.734g of zinc nitrate hexahydrate in 50mL of methanol, and dissolve 0.811g of 2-methylimidazole in 50mL of methanol.

[0038] In step 2, the above two solutions were mixed together and stirred evenly, and reacted at a room temperature of 25 degrees Celsius for 24 hours. The finished product ZnCN-1 was obtained by separation, washing and drying.

[0039] Such as figure 1 Shown, the transmission electron microscope characterization of gained product ZnCN-1; figure 2 The nitrogen gas adsorption-desorption isotherm diagram of ZnCN-1 at 77K is shown. Such as image 3 As shown, as a lithium-ion battery material, it can be cycled for 2000 cycles at a current of 1A / g.

Embodiment 2

[0041] Step 1, 2.938g of zinc nitrate hexahydrate was dissolved in 100mL of methanol, and 3.242g of 2-methylimidazole was dissolved in 100mL of methanol.

[0042] In step 2, the above two solutions were mixed together and stirred evenly, and reacted at a room temperature of 25 degrees Celsius for 24 hours. Separate, wash and dry to obtain the precursor.

[0043] Step 3: Pyrolysis at 700°C for 2 hours under a nitrogen atmosphere to obtain the finished product ZnCN-2.

[0044] Such as Figure 4Shown, the SEM characterization of the obtained ZnCN-2 product. Such as Figure 5 Shown, ZnCN-2 is used as the charge-discharge curve of the sodium-ion battery at 50mA / g current. Such as Figure 6 As shown, ZnCN-2 is used as a lithium-ion battery material under the charge-discharge curve of 200mA / g current at -10 degrees Celsius.

Embodiment 3

[0046] Step 1, 4.656g of cobalt nitrate hexahydrate was dissolved in 100mL of methanol, and 5.254g of 2-methylimidazole was dissolved in 100mL of methanol.

[0047] In step 2, the above two solutions were mixed together and stirred evenly, and reacted at a room temperature of 25 degrees Celsius for 24 hours. The finished product CoCN-1 was obtained by separation, washing and drying.

[0048] Such as Figure 7 As shown, the charge-discharge curve of CoCN-1 as a lithium-ion battery material at a current of 50mA / g.

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Abstract

The invention discloses a method for producing a composite porous material containing metal-carbon-nitrogen. The method comprises the following steps: a compound containing metal M and an organic ligand compound raw material are mixed, or respectively dissolved in a solvent, wherein, the metal M is transition metal or a transition metal mixture from a periodic table of elements, the organic ligand compound at least contains nitrogen and carbon, the solvent at least comprises at least one of compounds containing a general formula of CxHyOmNnSz, wherein x, y, z, m and n are integer, x is greater than or equal to 0, y is greater than or equal to 0, m is greater than or equal to 0, n is greater than or equal to 0, z is greater than or equal to 0, and all of x, y, z, m and n cannot represent 0; the raw materials are added in the solvent and are uniformly mixed, or the raw materials are respectively dissolved in the solvent and the raw material solutions are uniformly mixed, after a synthesis reaction, the products are separated, washed, and dried to obtain the composite porous material containing metal-carbon-nitrogen. The composite porous material has high capacity, excellent multiplying power performance, excellent cycling stability, and good low-temperature performance.

Description

technical field [0001] The invention relates to the technical field of energy material preparation, in particular to a method for preparing a metal-carbon-nitrogen composite porous material. Background technique [0002] More and more portable electronic devices, such as mobile phones, cameras, and notebook computers, have an increasing demand for small rechargeable and dischargeable energy sources with small size, large capacity, and light weight, such as lithium-ion batteries. At the same time, due to the sensitivity to climate of green energy such as solar energy and wind energy, it is imperative to develop large-scale energy storage systems. Therefore, there is an increasing demand for new energy storage materials with higher energy density, lower toxicity, and lower material cost. [0003] Lithium-ion batteries have gradually become a new generation of energy media due to their excellent cycle stability, high energy density, and no memory effect. In addition to improv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/62H01M4/60
CPCY02E60/10
Inventor 董全峰郑明森范镜敏
Owner XIAMEN UNIV
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