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Preparation method of iron phthalocyanine filter cathode membrane for improving electricity generation

A technology for filtering cathodes and iron phthalocyanine, which is applied to battery electrodes, circuits, electrical components, etc., can solve the problems of catalytic deactivation, insufficient stability, and poor water quality of MFC effluent, so as to improve the quality of effluent water, improve efficiency, and promote The effect of the oxygen reduction reaction

Active Publication Date: 2020-02-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the stability of metal phthalocyanine iron compounds in electrochemical reactions is far from enough, especially the demetallization reaction in the catalytic process, which may directly lead to catalytic deactivation.
[0005] Therefore, it is necessary to find an excellent electrocatalytic carrier for the doping of iron phthalocyanine (FePc) to solve the problem of poor stability of iron phthalocyanine catalyst, so as to improve the oxygen reduction performance of iron phthalocyanine catalytic cathode film and achieve the overall power generation of MFC system The purpose of improving the effect
At the same time, the performance of the traditional air cathode membrane is single, and the effect of MFC effluent water quality is poor. Therefore, it is necessary to develop a filter cathode membrane with dual characteristics of filtration interception and electrocatalysis. The effluent is intercepted by the cathode membrane to further improve the quality of MFC effluent water.

Method used

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  • Preparation method of iron phthalocyanine filter cathode membrane for improving electricity generation
  • Preparation method of iron phthalocyanine filter cathode membrane for improving electricity generation
  • Preparation method of iron phthalocyanine filter cathode membrane for improving electricity generation

Examples

Experimental program
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Effect test

Embodiment 1

[0025] This example illustrates the method and characterization method of the iron phthalocyanine doped electrode provided by the present invention. The steps of doping iron phthalocyanine to filter cathode membrane are as follows:

[0026] (1) Dissolve polyimide and polymethyl methacrylate, a film-forming hydrophilic modifier, in dichloromethane solution at a temperature of 35°C, wrap them in tin foil, stir for 7 hours in the dark, and let stand for 8 hours to obtain Homogeneous solution free of air bubbles. The mass ratio of described polyimide and film-forming hydrophilic modifier is 2.5:1, and the mass ratio of described polyimide and dichloromethane is 1:7;

[0027] (2) Mix activated carbon, conductive material carbon nanotubes, and iron phthalocyanine at a mass ratio of 12:2:1, and mix the mixed material with the homogeneous solution that has been debubbled in (1) at a mass ratio of 7:1 Ultrasound for 40 minutes to make conductive film liquid;

[0028] (3) According t...

Embodiment 2

[0034] A kind of step of filtering cathodic film doped with iron phthalocyanine is as follows:

[0035] (1) Dissolve polyether ketone and film-forming hydrophilic modifier lithium chloride in dichloromethane at a temperature of 37°C, wrap it in tin foil, stir for 8 hours in the dark, and let it stand for 8.5 hours to obtain a bubble-free product. Homogeneous solution; the mass ratio of the polyether ketone to the film-forming hydrophilic modifier is 2.5:1.5, and the mass ratio of the polyether ketone to methylene chloride is 1:8.

[0036] (2) Mixing of filter cathode membrane materials: Mix activated carbon, conductive material graphene, and iron phthalocyanine in a mass ratio of 12:2:3, and mix the mixed material with the homogeneous solution that has been debubbled in (1) by mass Ratio 7.5:1 mixing and ultrasonication for 45 minutes to make conductive film liquid;

[0037] (3) According to step (2), the activated carbon powder loading capacity in the conductive membrane liq...

Embodiment 3

[0043] A kind of step of filtering cathodic film doped with iron phthalocyanine is as follows:

[0044] (1) Dissolve polyetherimide and film-forming hydrophilic modifier polyacrylic acid in dichloromethane at a temperature of 40°C, wrap it in tin foil, stir for 9 hours in the dark, and let it stand for 9 hours to obtain a bubble-free product Homogeneous solution; The mass ratio of the polyetherimide and the film-forming hydrophilic modifier is 2.5:2, and the mass ratio of the polyetherimide and methylene chloride is 1:9;

[0045] (2) Mix activated carbon, conductive material carbon fiber, and iron phthalocyanine according to the mass ratio of 12:2:4, and mix the mixed material with the homogeneous solution from which the bubbles have been removed in (1) according to the mass ratio of 7.5:1 and sonicate for 50 minutes Make conductive film liquid;

[0046] (3) According to step (2) the loading capacity of activated carbon powder in the conductive film liquid is 30mg cm -2 , sp...

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Abstract

The invention relates to a preparation method of an iron phthalocyanin filter cathode membrane for improving electricity generation. The method comprises the following steps of: dissolving one of polyimide, polyether ketone or polyether imide and a film-forming hydrophilic modifier in a dichloromethane solution and standing to obtain a homogeneous solution with bubbles removed; and mixing activated carbon, a conductive material and a iron phthalocyanin metal complex to be mixed with the homogeneous solution to ultrasonically prepare a doped iron phthalocyanine filter cathode membrane. There isa conjugated system of 18pi electrons in the phthalocyanine structure. The electrons accelerate the transfer of the electrons in the oxygen reduction reaction so as to improve the conductivity and the current density of the cathode membrane and improve the catalytic stability of oxygen reduction. Compared with the traditional MFC, the filter output power of the doped iron phthalocyanine increasesby 1-2 orders of magnitude and the power output efficiency increases by 20%-30%. The doped iron phthalocyanine filter cathode membrane plays a role of interception and filtration so as to further improve the effluent effect of the MFC system.

Description

technical field [0001] The invention relates to a method for preparing a doped phthalocyanine iron cathode film suitable for microbial fuel cells (MFC). Background technique [0002] With the rapid development of human society, water pollution-based environmental problems have gradually become an important factor restricting the development of our country's society. The increasing sewage discharge not only increases the processing load, but also poses a threat to the safety of drinking water quality. At present, people's requirements for water quality have increased, and sewage treatment will consume more energy. Therefore, it is urgent to develop new low-consumption sewage treatment technologies. As a new type of sewage treatment and energy recovery technology, microbial fuel cell (MFC) can realize the direct oxidation of organic matter in sewage and generate electricity. The existing aerobic biological treatment process will produce a large amount of difficult-to-treat slu...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M8/16
CPCH01M4/9008H01M4/9075H01M4/8803H01M8/16Y02E60/50
Inventor 刘佳许润钒郁美莹陈雪鹏李楠何伟华冯玉杰
Owner TIANJIN UNIV