Method for preparing three-dimensional ordered porous material

A porous material, three-dimensional ordered technology, applied in the field of material preparation, can solve the problems of limited application, low energy density, etc., and achieve the effect of guaranteed rate performance, good application prospects, and adjustable size

Inactive Publication Date: 2018-09-14
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Supercapacitors make up for the lack of power density of lithium-ion, but the problem of low energy density also limits its application in energy storage

Method used

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  • Method for preparing three-dimensional ordered porous material
  • Method for preparing three-dimensional ordered porous material
  • Method for preparing three-dimensional ordered porous material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Monodisperse polystyrene microspheres were synthesized by soap-free emulsion polymerization. Styrene was purified by vacuum distillation before use. Add 150ml of deionized water, 0.175g of sodium chloride, and 25g of styrene monomer into a 250ml three-neck flask, stir in a water bath at 70°C, and add nitrogen to the flask after 20 minutes. 0.2g of potassium persulfate was polymerized at a constant temperature of 70°C for 20h under the protection of nitrogen. After the reaction, the obtained emulsion was repeatedly centrifuged and washed with ethanol and deionized water to remove salts and monomers, and finally prepared into a polystyrene microsphere emulsion with a mass fraction of 1% for future use. The prepared emulsion was ultrasonicated with an ultrasonic cell pulverizer for 1 h before use. The copper sheet was cut into a pole piece with a diameter of 14 mm (thickness 0.2 mm), and ultrasonically used for 15 min with acetone, ethanol, and deionized water respectively...

Embodiment 2

[0072] The carbon cloth is cut into a pole piece (thickness is 1 mm) with a diameter of 14 mm, ultrasonicated with acetone, ethanol, and isopropanol for 20 min respectively, and the treated carbon cloth is clamped with tweezers and immersed in the polystyrene microsphere emulsion prepared in Example 1 30S and dry at room temperature, and repeat this process until the required number of assembled layers (2 layers), the number of assembled layers of microspheres depends on the number of times the carbon cloth is immersed in the emulsion.

[0073] Add 1ml of titanium tetrachloride dropwise to 50ml of absolute ethanol to make a titanium tetrachloride solution, take 15μl of the titanium tetrachloride solution and drop it on the above carbon cloth, place it at room temperature for 6h, and then sinter the above sample (300 DEG C for 2 hours, 450 DEG C for 2 hours, and a heating rate of 1 DEG C / min), so that a titanium dioxide inverse opal structure is produced on the carbon cloth, tha...

Embodiment 3

[0076] Using the method of dispersion polymerization, add 15ml of purified styrene monomer and 0.27g of initiator azobisisobutylcyanide into a 250ml three-necked flask, turn on the water bath to heat, set the temperature at 75°C, and Add 120ml of methanol and 30ml of deionized water to the flask, stir evenly, add 0.3g of stabilizer methyl acyloxyethyltrimethylammonium chloride to the flask, and stabilize the rotation speed at 300rpm, and heat in a water bath for 8h. The obtained emulsion was centrifuged and washed 3 times with ethanol and deionized water to form a microsphere emulsion with a mass fraction of 2%. The prepared emulsion was sonicated with an ultrasonic cleaner for 2 h before use.

[0077] A 4cm×4cm copper sheet (thickness 0.2mm) was sonicated in a mixed solvent of deionized water, acetone, ethanol and water for 15min, then briefly cleaned in 4M hydrochloric acid solution for 20s and dried under argon atmosphere. Take a 100ml beaker, add 50ml of the polystyrene m...

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Abstract

The application discloses a method for preparing a three-dimensional ordered porous material. The method comprises: a conductive material is deposited on a template; and the template is removed to obtain a three-dimensional ordered porous material. The template is a micro / nano microsphere assembled to the substrate. The prepared three-dimensional porous electrode material has the ordered height and adjustable dimension and can be applied to energy storage devices such as a lithium ion battery, a supercapacitor and a metal air battery. The prepared three-dimensional ordered porous electrode hasthe unique performance in terms of flexible device and the has the broad application prospects.

Description

technical field [0001] The application relates to a method for preparing a three-dimensional ordered porous material, which belongs to the field of material preparation. Background technique [0002] The rapid development of electric tools and electric vehicles has put forward high requirements on the energy density and power density of energy storage devices. Lithium-ion batteries have high energy density, but the power density is not satisfactory. It does not meet the requirements of the development of modern society. Supercapacitors make up for the lack of power density of lithium ions, but the low energy density also limits their application in energy storage. [0003] Flexible energy storage devices are an important development direction of chemical power sources in the future. With the development of wearable, bendable, and flexible electronics, flexible energy storage devices that can provide them with high energy and high power have received more and more attention...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/26H01G11/24H01G11/86H01M4/36B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00H01G11/24H01G11/26H01G11/86H01M4/36Y02E60/10Y02E60/13
Inventor 何海勇王德宇潘林海
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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