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Preparation method of hollow porous TiO2 nanocubic material and application thereof

A nano-cube, hollow and porous technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the difficulty of forming a coating layer for high-curved nano-templates, reduce battery storage capacity, and form templates. In order to improve the electrochemical active sites, improve the capacity and reduce the powdering effect of electrodes

Inactive Publication Date: 2019-01-29
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And NMOFs materials have many types and shapes, high porosity, and good structural integrity. Using MOF as a template material can solve some problems faced by traditional template methods in the preparation of non-spherical hollow porous nanomaterials: such as high-curved nano-templates It is difficult to form a uniform and stable coating layer on the surface of the surface, it is difficult to maintain the shape of the original material after removing the template, and the shape of the template is single, etc.
In the current research, most of the MOFs are coated with SiO by multi-temperature heat treatment in different atmospheres. 2 or TiO 2 Porous metal oxides are prepared by methods such as the outer shell layer. These methods have complicated processing steps and are easy to introduce other elements during the processing process, which will reduce the storage capacity of the battery.

Method used

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  • Preparation method of hollow porous TiO2 nanocubic material and application thereof
  • Preparation method of hollow porous TiO2 nanocubic material and application thereof
  • Preparation method of hollow porous TiO2 nanocubic material and application thereof

Examples

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Embodiment 1

[0035] The hollow porous TiO of this embodiment 2 The preparation method of nano cube material comprises the following steps:

[0036] Step 1. Mix 0.5 g of 2-aminoterephthalic acid and 20 mL of N,N-dimethylformamide and stir evenly to obtain a clear mixed solution A;

[0037] Step 2: Mix 0.4g of titanium isopropoxide and 16mL of methanol and stir evenly to obtain a mixed solution B;

[0038] Step 3. Add the mixed solution B obtained in step 2 to the mixed solution A obtained in step 1, stir for 2 hours to obtain a bright yellow mixed solution C, and then transfer the mixed solution C to a hydrothermal reaction kettle and heat to 160 ℃ reaction 10h;

[0039] Step 4. Centrifuge the mixed solution C after the heating reaction in step 3, and wash the centrifuged precipitate with equal volumes of N,N-dimethylformamide and anhydrous methanol three times in sequence, and then place it in a vacuum drying oven Dry in vacuum at 40°C to obtain amino-modified Ti-MIL-125 nanocube materi...

Embodiment 2

[0048] The hollow porous TiO of this embodiment 2 The preparation method of nano cube material comprises the following steps:

[0049] Step 1. Mix 2g of 2-aminoterephthalic acid and 120mL of N,N-dimethylformamide and stir evenly to obtain a clear mixed solution A;

[0050] Step 2: Mix 3g of titanium isopropoxide and 180mL of methanol and stir evenly to obtain a mixed solution B;

[0051] Step 3. Add the mixed solution B obtained in step 2 to the mixed solution A obtained in step 1. After stirring for 1 h, a bright yellow mixed solution C is obtained, and then transfer the mixed solution C to a hydrothermal reaction kettle and heat to 170 ℃ reaction 20h;

[0052] Step 4. Centrifuge the mixed solution C after heating and reacting in step 3. The centrifuged precipitate obtained is washed three times with N,N-dimethylformamide and anhydrous methanol successively, and then placed in a vacuum drying oven at 90 ℃ drying, to obtain the amino-modified Ti-MIL-125 nano-cube material; ...

Embodiment 3

[0061] The hollow porous TiO of this embodiment 2 The preparation method of nano cube material comprises the following steps:

[0062] Step 1. Mix 1 g of 2-aminoterephthalic acid and 50 mL of N,N-dimethylformamide and stir evenly to obtain a clear mixed solution A;

[0063] Step 2: Mix 1 g of titanium isopropoxide and 50 mL of methanol and stir evenly to obtain a mixed solution B;

[0064] Step 3: Add the mixed solution B obtained in step 2 to the mixed solution A obtained in step 1, stir for 1 hour to obtain a bright yellow mixed solution C, then transfer the mixed solution C to a hydrothermal reaction kettle and heat to 165 ℃ reaction 15h;

[0065] Step 4. Centrifuge the mixed solution C after heating and reacting in step 3. The centrifuged precipitate obtained is washed three times with N,N-dimethylformamide and anhydrous methanol successively, and then placed in a vacuum drying oven at 60 ℃ drying, to obtain the amino-modified Ti-MIL-125 nano-cube material;

[0066] St...

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Abstract

The invention discloses a preparation method of a hollow porous TiO2 nanocubic material. The method firstly mixes titanium isopropoxide and methanol, adds into a mixture of 2-aminoterephthalic acid and N,N-dimethylformamide for a reaction, obtains an amino-modified Ti-MIL-125 nanocube material, conducts stirring for the reaction after water, sodium hydroxide and absolute ethanol are added, obtainsa nano-precursor material, and finally conducts heat-treating to obtain the hollow porous TiO2 nanocubic material; the invention discloses application of the hollow porous TiO2 nanocubic material ina lithium ion battery. The method utilizes the characteristics that acidic ligands constituting the amino-modified Ti-MIL-125 nanometer material are not stable under the alkaline condition to conductself-etching, thereby ensuring the stability of the structure and performance; the hollow porous TiO2 nanocubic material is applied to the lithium ion battery to increase the specific capacity of thelithium ion battery.

Description

technical field [0001] The invention belongs to the technical field of energy material preparation, in particular to a hollow porous TiO 2 Preparation methods and applications of nanocube materials. Background technique [0002] With the rapid development of industrialization and the advancement of modern technology, the storage capacity of traditional energy such as petrochemicals has been continuously reduced, and environmental pollution has intensified. However, people's demand for energy is increasing day by day. Therefore, the development of efficient and clean new energy has become a hot spot of everyone's attention. As an energy storage device, lithium-ion batteries are widely used in energy storage fields such as communication electronic equipment, electric vehicle power supply, and aerospace due to their advantages such as high capacity, long life, and light weight. In terms of anode materials, TiO 2 As a lithium-ion battery anode material, it has the advantages o...

Claims

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Application Information

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IPC IPC(8): H01M4/485H01M10/0525B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01M4/485H01M10/0525Y02E60/10
Inventor 党蕊操齐高孟晗琪陈昆昆赵盘巢
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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