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Multistage micropore composite electrode material and manufacturing method thereof

A composite electrode and porous material technology, which is applied in the manufacture of hybrid capacitor electrodes, hybrid/electric double layer capacitors, etc., can solve the problems of low energy density, small specific surface area, low conductivity, etc., and achieve high energy storage density, high ratio The effect of surface area and simple manufacturing process

Inactive Publication Date: 2016-01-27
黄辉 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it can not solve following technical problem, macroporous material, because mesh size is bigger, so specific surface area is less, the energy density of storage is lower; High), but the loading capacity is small and the conductivity is low; therefore, a composite material with large pores with good conductivity and small pores with large specific surface area will greatly improve the performance of the electrode

Method used

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  • Multistage micropore composite electrode material and manufacturing method thereof
  • Multistage micropore composite electrode material and manufacturing method thereof
  • Multistage micropore composite electrode material and manufacturing method thereof

Examples

Experimental program
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Embodiment 1

[0030] A multi-level microporous composite electrode material with a three-dimensional pore structure, characterized in that: a small-pore material with a three-dimensional network structure and a large-pore material with a three-dimensional network structure are covered with each other, and the small-pore material is filled in the large In the pores of the porous material, there are unfilled gaps in the pores of the macroporous material; the macroporous material is nickel foam, and the average pore diameter is 20 mm; the small porosity material is a mixed colloid of organic colloids and nanowires cured and corroded The resulting porous material has an average pore diameter of 1 nanometer.

[0031] The preparation method of a kind of multi-level microporous composite electrode material described in this embodiment can be prepared in the following manner:

[0032] Mix organic colloids and nanowires to obtain mixed colloids, then soak nickel foam macroporous materials in the mix...

Embodiment 2

[0034] A multi-level microporous composite electrode material with a three-dimensional pore structure, characterized in that: a small-pore material with a three-dimensional network structure and a large-pore material with a three-dimensional network structure are covered with each other, and the small-pore material is filled in the large In the pores of the porous material, there are unfilled gaps in the pores of the macroporous material; the macroporous material is aluminum foam, and the average pore diameter is 0.1 mm; the small porosity material is conductive hydrogel (polyaniline), The average pore diameter is 100 microns.

[0035] The preparation method of a kind of multi-level microporous composite electrode material described in this embodiment can be prepared in the following manner:

[0036] The macroporous material, aluminum foam, is soaked in a conductive hydrogel (polyaniline) solution, so that the hydrogel solution fills the macropores; the hydrogel is subsequentl...

Embodiment 3

[0038] A multi-level microporous composite electrode material with a three-dimensional pore structure, characterized in that: a small-pore material with a three-dimensional network structure and a large-pore material with a three-dimensional network structure are covered with each other, and the small-pore material is filled in the large In the pores of the porous material, there is an unfilled gap in the pores of the macroporous material; the macroporous material is aluminum foam, and the average pore diameter is 10 mm; the small void material is a monomer (aniline) of a hydrogel , with an average pore diameter of 1 micron.

[0039] The preparation method of a kind of multi-level microporous composite electrode material described in this embodiment can be prepared in the following manner:

[0040] Aluminum foam, a macroporous material, is soaked in a hydrogel monomer (aniline) solution, so that the hydrogel monomer solution fills the macropores; then a cross-linking agent is ...

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Abstract

The invention relates to a multistage micropore composite electrode material and a manufacturing method thereof. A structure is a three-dimensional pore structure. The material is characterized in that a small pore material possessing a three-dimensional mesh structure and a large pore material possessing the three-dimensional mesh structure are mutually wrapped; the small pore material is filled in pores of the large pore material and incompletely-filled gaps exist in the pores of the large pore material. The manufacturing method of the electrode material comprises the following steps that the large pore material possessing the three-dimensional mesh structure is dipped in a hydrogel solution so that the hydrogel solution is filled in large pores possessing the three-dimensional mesh structure; and then, the hydrogel is solidified so as to form a three-dimensional small gap material; during a solidified process, the size of the hydrogel is contracted to a certain degree so that unfilled gaps exist in the large pores. The material and the method have the advantages that the composite electrode material possesses a high specific surface area (high energy storage density) and rapid ion migration and diffusion speeds (short charge and discharge time); a manufacturing technology is simple and material cost is low.

Description

technical field [0001] The invention relates to an electrode material and a preparation method thereof, in particular to a multilevel microporous composite electrode material and a preparation method thereof, which can be used for supercapacitors. Background technique [0002] As a device for storing electrical energy, compared with lithium-ion batteries, supercapacitors have the advantages of fast charging and discharging time and high power density, but the stored power is still low (Adv. Mater. 2013, 25, 5336-5342). Therefore, there is a need to increase the energy density (in farad / gram) of electrode materials. At present, the main electrode materials are carbon (such as graphite, carbon nanotubes, etc.), transition metal oxides (such as NiO, MnO 2 , RuO 2 , IrO 2 etc.), and organic matter (such as polyaniline). The structure of these electrode materials does not belong to the three-dimensional network structure, and it is easy to agglomerate together; therefore, the...

Claims

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Application Information

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IPC IPC(8): H01G11/24H01G11/26H01G11/86
Inventor 黄辉渠波刘蓬勃马驰胡杰白敏
Owner 黄辉
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