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Preparation and application of composite anode of microbiological fuel cell

A fuel cell and composite anode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problem of low output power density, and achieve the effect of improving anode output power density and significant catalytic effect.

Inactive Publication Date: 2010-09-22
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the shortcomings of the low output power density of microbial fuel cells in the prior art, to provide a preparation method for a composite anode containing an inorganic catalyst and polyaniline with a high output power density, and to use the composite anode Microbial Fuel Cell

Method used

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  • Preparation and application of composite anode of microbiological fuel cell
  • Preparation and application of composite anode of microbiological fuel cell
  • Preparation and application of composite anode of microbiological fuel cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] This example is used to illustrate the preparation method of the composite anode containing manganese salt and polyaniline.

[0050] Measure a certain amount of concentrated sulfuric acid (mass fraction 98%) into a beaker, then pour aniline monomer (re-distilled before use) to make a 300ml solution, and stir magnetically for 5 minutes to dissolve the precipitate. The concentration of sulfuric acid is 1M, and the concentration of aniline monomer is 0.2M. Add 4.45g of manganese dioxide, and stir quickly and evenly. Stand still, react for 15min, and filter with suction. The obtained product was dried in a blast drying oven at 60° C. and crushed. Add the above product to 12M concentrated sulfuric acid at 4°C for sulfonation treatment for 20 minutes, then perform suction filtration, rinse repeatedly with distilled water, dry the obtained product in a blast drying oven at 60°C, and crush it to obtain manganese salt containing and polyaniline anode materials. Connect 2×2cm...

Embodiment 2

[0052] This example is used to illustrate the preparation method of the composite anode containing manganese salt and polyaniline.

[0053] Measure a certain amount of concentrated sulfuric acid (mass fraction 98%) into a beaker, then pour aniline monomer (re-distilled before use) to make a 300ml solution, and stir magnetically for 5 minutes to dissolve the precipitate. The concentration of sulfuric acid is 0.5M, and the concentration of aniline monomer is 0.1M. Add 1.11 g of manganese dioxide, and stir quickly and evenly. Stand still, react for 30min, and filter with suction. The obtained product was dried in a blast drying oven at 55° C. and crushed. Add the above product to 8M concentrated sulfuric acid at 4°C for sulfonation treatment for 30 minutes, then perform suction filtration, rinse repeatedly with distilled water, dry the obtained product in a blast drying oven at 55°C, and crush it to obtain manganese salt containing and polyaniline anode materials. Connect 2×2...

Embodiment 3

[0055] This example is used to illustrate the preparation method of the composite anode containing manganese salt and polyaniline.

[0056] Measure a certain amount of concentrated sulfuric acid (mass fraction 98%) into a beaker, then pour aniline monomer (re-distilled before use) to make a 300ml solution, and stir magnetically for 5 minutes to dissolve the precipitate. The concentration of sulfuric acid is 2M, and the concentration of aniline monomer is 0.5M. Add 17.8 g of manganese dioxide, and stir quickly and evenly. Stand still, react for 10min, and filter with suction. The obtained product was dried in a blast drying oven at 95°C and crushed. Add the above product to 15M concentrated sulfuric acid at 4°C for sulfonation treatment for 10 minutes, then perform suction filtration, rinse repeatedly with distilled water, dry the obtained product in a blast drying oven at 95°C, and crush it to obtain manganese salt containing and polyaniline anode materials. Connect 2×2cm ...

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Abstract

The invention relates to the technical field of microbiological fuel cells and provides methods for preparing and applying a composite anode of a microbiological fuel cell. The composite anode contains an inorganic catalyst and polyaniline, has high electric catalytic performance and can remarkably enhance the output power density of the cell. The method for preparing the composite anode comprises the following steps of: performing initiation by using an inorganic initiator, such as manganese dioxide or ammonium metavanadate to synthesize the polyaniline; sulfonating the polyaniline at a low temperature; and pressing an electrode. A marine microbiological fuel cell which contains marine sediments and a sewage microbiological fuel cell are assembled by using the composition anode and a method for specifically testing and analyzing the cell performance is provided. A result indicates that the output power density of the cell is greatly enhanced, the maximum output power density of the composite anode, which contains a manganese compound and the polyaniline is 140.647mW / m<2> and is 4.12 times that of an unmodified anode. The maximum output power density of the composite anode, which contains a vanadium compound and the polyaniline is 187.06mW / m<2> and is 5.48 times that of the unmodified anode.

Description

technical field [0001] The invention belongs to the technical field of microbial fuel cells, and in particular relates to the preparation and application of a composite anode containing an inorganic catalyst and polyaniline. Background technique [0002] A microbial fuel cell is a device that uses electricity-producing microorganisms to convert chemical energy in organic matter into electrical energy. Due to the increasingly serious energy problems in today's society and the greenhouse effect brought by fossil fuels, renewable bio-energy has attracted people's attention. Microbial fuel cells use organic matter as raw materials (such as sewage and sludge). As the organic matter degrades, the chemical energy in the organic matter is released, and the generated electrons are captured by microorganisms and transferred to the anode, and the electrons reach the cathode through an external circuit to generate current. The advantage of microbial fuel cells is that there are a wide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCY02E60/50
Inventor 付玉彬赵仲凯
Owner OCEAN UNIV OF CHINA
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