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Electrode material with fiber structure and preparation and application thereof

An electrode material and fiber structure technology, applied in the field of new fiber structure electrodes and their preparation, can solve the problems of difficult to achieve electrode performance, uncontrollable porosity, pore size and pore shape, difficult to achieve in-depth research on electrode performance, etc. Uncontrollable factors, increased porosity, and the effect of strong practicability

Inactive Publication Date: 2019-06-25
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the traditional electrode preparation method, the electrode layer formed by cross-linking and stacking the electrode material slurry on the substrate through various coating technologies often has uncontrollable porosity, pore size and channel shape, and it is difficult to realize the structure and efficiency of the electrode. In-depth research, it is also difficult to improve the performance of the electrode

Method used

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  • Electrode material with fiber structure and preparation and application thereof
  • Electrode material with fiber structure and preparation and application thereof
  • Electrode material with fiber structure and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] a. Preparation of composite spinning solution

[0031] A certain mass of chloroplatinic acid was added into the dimethylformamide solvent so that the mass concentration of the precious metal was 5%, and it was fully dissolved for later use. A certain mass of perfluorosulfonic acid polyion was added to the above solution to make the mass concentration 0.5%, and stirred for 2 hours. A certain mass of polyacrylic acid was added to the above solution to make the mass concentration 5%, and stirred for 2 hours at room temperature, fully dissolved and uniform before use.

[0032] The above composite solution was heated to 120° C. in an oil bath under continuous stirring, continued to react for 4 hours, cooled to room temperature, and continued to stir for 1 hour before use.

[0033] b. Electrospinning preparation of fiber-structured electrode materials

[0034] Place the spinning colloid solution prepared in the above step a at the inlet of the spinning injection device, the...

Embodiment 2

[0041] a. Preparation of composite spinning solution

[0042] A certain mass of chloroplatinic acid was added into the dimethylformamide solvent so that the mass concentration of the noble metal was 6%, and it was fully dissolved for later use. A certain mass of perfluorosulfonic acid polyion was added to the above solution to make the mass concentration 0.5%, and stirred for 2 hours. A certain mass of polyvinylpyrrolidone was added to the above solution to make the mass concentration 6%, and stirred for 6 hours at room temperature, fully dissolved and uniform before use.

[0043] The above composite solution was heated to 140° C. in an oil bath under the condition of continuous stirring, continued to react for 4 hours, cooled to room temperature, and continued to stir for 1 hour for use.

[0044] b. Electrospinning preparation of fiber-structured electrode materials

[0045] Place the spinning colloid solution prepared in the above step a at the inlet of the spinning inject...

Embodiment 3

[0047] a. Preparation of composite spinning solution

[0048]A certain quality of chloroauric acid and nickel nitrate is added into the ethylene glycol solvent according to the amount ratio of 1:1, so that the mass concentration of the precious metal is 10%, fully dissolved and then used. A certain mass of polybenzimidazole was added into the above solution to make the mass concentration 2%, and stirred for 4 hours. A certain mass of polyethylene oxide was added to the above solution to make the mass concentration 8%, and stirred for 4 hours at room temperature, fully dissolved and uniform before use.

[0049] The above composite solution was heated to 130° C. in an oil bath under the condition of continuous stirring, continued to react for 2 hours, cooled to room temperature, and continued to stir for 2 hours before use.

[0050] b. Electrospinning preparation of fiber-structured electrode materials

[0051] Place the spinning colloid solution prepared in the above step a a...

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Abstract

An electrode material with a fiber structure is a nano fiber structure with a micron or submicron structure in diameter, the fiber structure also comprises a porous structure with a nano-sized pore diameter and the porosity is 20-80%. The nano fiber structure electrode material comprises the components of an ion conductor material and an electron conductor material. Compared with the prior art, the electrode material has the advantages of orderly and controllable structure, good quality transfer performance, high noble metal utilization rate, high ion transmission efficiency and strong practicability.

Description

technical field [0001] The invention relates to a novel fiber structure electrode and its preparation method. Specifically, the fiber structure electrode has an adjustable fiber diameter, and the fiber composition ratio and porosity can be adjusted. It can be used in proton exchange membrane fuel cells, direct liquid In electrodes such as fuel cells, metal-air batteries, supercapacitors, and lithium-ion batteries. [0002] The present invention also relates to a method for preparing the above-mentioned composite material. Background technique [0003] Electrode materials with ordered fiber structures have great application potential in the fields of electronics, energy, and biomedicine. Conductive materials suitable for electrochemical environments in electrodes are usually various carbon-based nanomaterials, such as carbon nanotubes, graphene, activated carbon, etc. A notable feature of this type of material is that it usually presents a flexible feature, and in the proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/52D01F6/56D01F6/94D01F1/09H01M4/04H01M4/134H01M4/1395H01M4/36H01M4/38H01M4/62H01M4/86H01M4/88H01M4/92
CPCY02E60/10Y02E60/50
Inventor 王素力夏章讯孙公权
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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