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Preparation method and application of stacked NiO micro-nano material

A micro-nano, light green technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems affecting electrochemical performance, material surface or internal structure collapse, etc., to increase electrochemical performance. Active sites, guaranteed electrochemical performance, and quality-enhancing effects

Inactive Publication Date: 2019-02-01
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, during the high-temperature heat treatment process of MOFs materials, the organic ligand functional groups will be pyrolyzed and release gas, which will lead to the collapse of the surface or internal structure of the material, and ultimately affect the electrochemical performance.
Therefore, it is still challenging to prepare structurally stable metal oxide materials using MOFs as templates.

Method used

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  • Preparation method and application of stacked NiO micro-nano material
  • Preparation method and application of stacked NiO micro-nano material
  • Preparation method and application of stacked NiO micro-nano material

Examples

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Effect test

Embodiment 1

[0028] The preparation method of the laminated NiO micro-nano material of the present embodiment comprises the following steps:

[0029] Step 1. Mix and stir 0.3g terephthalic acid, 0.45g nickel nitrate hexahydrate, 30mL N,N-dimethylformamide and 30mL water for 1.5h to obtain a light green mixed solution, then place the light green mixed solution in In the hydrothermal reaction kettle, the reaction was carried out under the condition of stirring; the temperature of the reaction was 160°C, and the time was 8h;

[0030] Step 2, centrifuge the light green mixed solution after the reaction in step 1, and wash the centrifuged precipitate three times with N,N-dimethylformamide and anhydrous methanol successively, then place it in a vacuum drying oven at 40 °C vacuum drying to obtain a laminated Ni-MOFs micron material; the particle size of the laminated Ni-MOFs micron material is 10 μm to 15 μm;

[0031] Step 3. Place the laminated Ni-MOFs micron material obtained in step 2 in a tu...

Embodiment 2

[0038] The preparation method of the laminated NiO micro-nano material of the present embodiment comprises the following steps:

[0039] Step 1. Mix 1.0g of terephthalic acid, 3g of nickel nitrate hexahydrate, 300mL of N,N-dimethylformamide and 300mL of water and stir for 3 hours to obtain a light green mixture, then place the light green mixture in water In the thermal reaction kettle, the reaction is carried out under stirring; the temperature of the reaction is 180°C, and the time is 15h;

[0040] Step 2. Centrifuge the light green mixed solution after the reaction in step 1. The obtained centrifugal precipitate is washed three times with N, N-dimethylformamide and anhydrous methanol successively, and then placed in a vacuum drying oven at 90 °C vacuum drying to obtain a laminated Ni-MOFs micron material; the particle size of the laminated Ni-MOFs micron material is 10 μm to 15 μm;

[0041] Step 3. Place the laminated Ni-MOFs micron material obtained in step 2 in a tube fu...

Embodiment 3

[0046] The preparation method of the laminated NiO micro-nano material of the present embodiment comprises the following steps:

[0047] Step 1. Mix and stir 0.5g terephthalic acid, 1g nickel nitrate hexahydrate, 100mL N,N-dimethylformamide and 100mL water for 2 hours to obtain a light green mixture, then place the light green mixture in water In the thermal reaction kettle, the reaction is carried out under the condition of stirring; the temperature of the reaction is 170°C, and the time is 10h;

[0048] Step 2, centrifuge the light green mixed solution after the reaction in step 1, and wash the centrifuged precipitate three times with N,N-dimethylformamide and anhydrous methanol successively, then place it in a vacuum drying oven at 60 °C vacuum drying to obtain a laminated Ni-MOFs micron material; the particle size of the laminated Ni-MOFs micron material is 10 μm to 15 μm;

[0049] Step 3. Place the laminated Ni-MOFs micron material obtained in step 2 in a tube furnace, h...

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Abstract

The invention discloses a preparation method of a stacked NiO micro-nano material. The method comprises the following steps: first, blending terephthalic acid, nickel nitrate hexahydrate, N,N-dimethylformamide and water and then carrying out hydrothermal reaction; second, centrifuging, washing and drying hydrothermal reaction products to obtain a stacked Ni-MOFs micron material; and third, carrying out heat treatment on the stacked Ni-MOFs micron material to obtain a stacked NiO micro-nano material. The invention further discloses application of the stacked NiO micro-nano material. By the characteristic that a Ni-MOFs organic ligand functional group framework is easily degraded after heating heated in a high-temperature environment, the stacked NiO micro-nano material is prepared, by stacked morphology of the material, mutual supporting effect is provided for interlayer, the circumstance of collapse of the surface or the internal structure of the material is avoided, and the electrochemical property of the material is ensured; and the stacked NiO micro-nano material is applied to an anode material of a lithium ion battery, and the specific capacity of the lithium battery is improved.

Description

technical field [0001] The invention belongs to the technical field of energy materials, and in particular relates to a preparation method and application of a laminated NiO micro-nano material. Background technique [0002] With the rapid development of the global economy and the advancement of modern technology, people's demand for energy is increasing day by day. However, the storage capacity of traditional petrochemical energy continues to decrease, and the environmental pollution problems caused by it continue to intensify. Therefore, the development of efficient and clean energy has become a hot spot of concern. Lithium-ion batteries have the advantages of high voltage, high energy density, high safety, and low self-discharge rate, and are widely used in various portable electronic devices, electric vehicles, space technology, and defense industries. As the main material for storing lithium in lithium-ion batteries, negative electrode materials play a key role in lith...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/36H01M4/52H01M4/62H01M10/0525B82Y30/00B82Y40/00
CPCH01M4/362H01M4/523H01M4/62H01M4/628H01M10/0525B82Y30/00B82Y40/00Y02E60/10
Inventor 党蕊操齐高张卜升陈昆昆孟晗琪
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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