Preparation method and application of nanorod-like NiCo2O4 material

A nanorod-like, preparation process technology, applied in the field of nanomaterials, can solve the problems of hindering the electron transfer level between active materials and electrodes, hindering the electron transfer of MOF particles, poor conductivity of MOF materials, etc. The effect of simplifying the synthesis process

Pending Publication Date: 2021-04-16
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, MOF materials have the problem of poor electrical conductivity, which hinders not only the electron transfer between MOF particles, but also the electron transfer level between MOF-based active materials and electrodes.

Method used

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  • Preparation method and application of nanorod-like NiCo2O4 material
  • Preparation method and application of nanorod-like NiCo2O4 material
  • Preparation method and application of nanorod-like NiCo2O4 material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Nanorod material NiCo 2 o 4 -1 preparation method, comprises the following steps:

[0028] (1) Preparation of Co-ZIF: Weigh 2.9g of cobalt nitrate and 3.3g of 2-methylimidazole respectively dissolved in 20mL of methanol solution, then mix them into a 50mL autoclave and keep at 100°C for 12h. Finally, wash with deionized water and ethanol and dry at 60°C for 12 hours;

[0029] (2) Preparation of precursor: Weigh 0.2g Co-ZIF, 0.2908g nickel nitrate, 0.5821g cobalt nitrate and 0.3003g urea into 35mL deionized water, put them into a 50mL autoclave and keep at 120°C for 12h. After centrifugation, wash with water and ethanol, and dry at 60°C for 12 hours;

[0030] (3) Sample preparation: the precursor was placed in a porcelain boat, heated from room temperature to 350 °C at a rate of 1 °C / min in an air atmosphere, calcined for 2 h, and naturally cooled to room temperature to prepare the sample.

[0031] figure 2 (a) NiCo made for this example 2 o 4 SEM photo of -1 (un...

Embodiment 2

[0033] Nanorod material NiCo 2 o 4 The preparation method comprises the following steps:

[0034] (1) Preparation of Co-ZIF: Weigh 2.9g of cobalt nitrate and 3.3g of 2-methylimidazole respectively dissolved in 20mL of methanol solution, put them in a 50mL autoclave at 100°C for 12h, and use deionized After washing with water and ethanol, dry at 60°C for 12 hours;

[0035](2) Preparation of precursor: Weigh 0.2g of Co-ZIF, 0.1454g of nickel nitrate, 0.5821g of cobalt nitrate and 0.3003g of urea into 35mL of deionized water, put them into a 50mL autoclave and keep at 120°C for 6h. After centrifugation, wash with water and ethanol, and dry at 60°C for 12 hours; after centrifugation, wash with water and ethanol, and dry at 60°C for 12 hours;

[0036] (3) Sample preparation: the precursor was placed in a porcelain boat, heated from room temperature to 300 °C at a rate of 1 °C / min in an air atmosphere, calcined for 4 h, and cooled naturally to room temperature to prepare the samp...

Embodiment 3

[0038] Nanorod material NiCo 2 o 4 The preparation method comprises the following steps:

[0039] (1) Preparation of Co-ZIF: Weigh 2.9g of cobalt nitrate and 3.3g of 2-methylimidazole respectively dissolved in 20mL of methanol solution, put them in a 50mL autoclave at 120°C for 6h, and use deionized After washing with water and ethanol, dry at 60°C for 12 hours;

[0040] (2) Preparation of precursor: Weigh 0.2g of Co-ZIF, 0.2908g of nickel nitrate, 0.2908g of cobalt nitrate and 0.3003g of urea into 35mL of deionized water, put them into a 50mL autoclave and keep at 60°C for 24h. After being collected by centrifugation, it was washed with water and ethanol, and dried at 60°C for 12 hours. After centrifugation, wash with water and ethanol, and dry at 60°C for 12 hours;

[0041] (3) Sample preparation: the precursor was placed in a porcelain boat, heated from room temperature to 400 °C at a rate of 1 °C / min in air, calcined for 2 h, and cooled naturally to room temperature to...

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Abstract

The invention discloses a preparation method and application of a nanorod-like NiCo2O4 material, which comprises the following steps: carrying out hydrothermal reaction on cobalt salt and 2-methylimidazole to obtain CoZIF, adding the CoZIF into the cobalt salt and nickel salt water solution to carry out hydrothermal reaction, calcining the materials at 300-550 DEG C in the air atmosphere for 1-4 hours to remove the template, and washing the product with ethanol and deionized water to obtain the nanorod-like NiCo2O4 material; finally, drying the product at 60 DEG C to obtain the rod-like NiCo2O4 material. The preparation process of the nanorod-like NiCo2O4 material is simple, the equipment investment is small, the preparation period is short, the cost is low, and compared with NiCo2O4 materials prepared by other methods, the electrochemical performance of the nanorod-like NiCo2O4 material is more remarkable.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, in particular to a nanorod NiCo 2 o 4 The method of preparation of the material. Background technique [0002] MOF structures composed of metal cation polymers linked by metal cations and organic ligand molecules have become research hotspots in various fields such as energy storage, catalysis, chemical sensors, and drug delivery because of their unique nanostructures. Zeolitic imidazole framework (ZIF) is a kind of MOF, which has a large surface area, abundant micropores and redox reaction sites, and has attracted great attention in the field of electrochemical energy storage. However, MOF materials suffer from poor electrical conductivity, which hinders not only the electron transfer between MOF particles but also the electron transfer level between MOF-based active materials and electrodes. Therefore, many researchers currently combine MOF structures with conductive substances to impr...

Claims

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Application Information

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IPC IPC(8): C01G53/00B82Y40/00H01G11/24H01G11/46
CPCY02E60/13
Inventor 张春勇李健宁张译文周心雨舒莉文颖频朱炳龙秦恒飞梁国斌
Owner JIANGSU UNIV OF TECH
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