Cloth cathode assembly for microbiological fuel cell and preparation method thereof

A technology for fuel cells and cathode components, applied in the direction of biochemical fuel cells, battery electrodes, electrical components, etc., can solve the problems of complex preparation process, poor mechanical properties, and expensive materials, and achieve simple manufacturing process, good mechanical properties, and easy operation simplified effect

Active Publication Date: 2009-12-23
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] An object of the present invention is to overcome the shortcomings of the existing membrane cathode assembly, which are complex in preparation process and require special equipment, expensive materials, and poor mechanical properties, and provide a new cloth cathode assembly for microbial fuel cells, the cloth cathode The components have the advantages of simple manufacture, low cost, good mechanical properties, convenient assembly, stable operation, etc.

Method used

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  • Cloth cathode assembly for microbiological fuel cell and preparation method thereof
  • Cloth cathode assembly for microbiological fuel cell and preparation method thereof
  • Cloth cathode assembly for microbiological fuel cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1 Cloth cathode assembly preparation

[0041] A piece of commercially available canvas with a length, width and thickness of 14.5cm×17.5cm×0.6mm was used as the cloth base material, and the preparation steps of the cloth cathode group were as follows:

[0042] (1) Canvas waterproof and breathable treatment. Weigh 0.5g of polyvinylidene fluoride (PVDF) powder and dissolve it in 7.0mL of N-methylpyrrolidone, stir and mix and evenly paint on one side of the canvas, air-dry for 12 hours under natural conditions, and then dry at 80°C for 1 hours, the PVDF load on the canvas is calculated to be about 2.0mg / cm by weighing 2 ;

[0043] (2) Oxygen reduction catalyst and conductive paint mixed slurry preparation. Adopt commercially available electrolytic manganese dioxide (purchased from Xiangtan Electrochemical Group Co., Ltd.) as the oxygen reduction catalyst, nickel-based conductive paint (purchased from Wuxi Shuguang Paint Factory) as the conductive coating mate...

Embodiment 2

[0046] Embodiment 2 Fabric cathode assembly preparation

[0047] A piece of commercially available denim fabric with a length, width and thickness of 29cm×35cm×0.5mm is used as the cloth base material, and the preparation steps of the cloth cathode group are as follows:

[0048] (1) Denim waterproof and breathable treatment. Weigh 3.0g of polytetrafluoroethylene (PTFE) powder and dissolve it in 40.0mL of N-methylpyrrolidone, stir and mix and evenly paint on one side of the denim, air-dry for 10 hours under natural conditions, and then dry at 90°C After 1 hour, the PTFE load on the canvas is about 3.0mg / cm by weighing calculation 2 ;

[0049] (2) Oxygen reduction catalyst and conductive paint mixed slurry preparation. Commercially available tetramethoxyphenyl cobalt porphyrin (CoTMPP) (purchased from Beijing Bailingwei Chemical Technology Co., Ltd.) was used as the oxygen reduction catalyst, and graphite-based conductive paint (purchased from Wuxi Shuguang Paint Factory) was...

Embodiment 3

[0051] Embodiment 3 fabric cathode assembly preparation

[0052] A piece of commercially available canvas with a length, width and thickness of 14.5cm×17.5cm×0.6mm was used as the cloth base material, and the preparation steps of the cloth cathode group were as follows:

[0053] (1) Canvas waterproof and breathable treatment. Weigh 0.25g of polyvinylidene fluoride (PVDF) powder and dissolve it in 7.0mL of N-methylpyrrolidone, stir and mix, evenly paint on one side of the canvas, air-dry for 11 hours under natural conditions, and then dry at 50°C for 2 hours, the PVDF load on the canvas is calculated to be about 1.0mg / cm by weighing 2 ;

[0054] (2) Oxygen reduction catalyst and conductive paint mixed slurry preparation. Adopt commercially available electrolytic manganese dioxide (purchased from Xiangtan Electrochemical Group Co., Ltd.) as the oxygen reduction catalyst, nickel-based conductive paint (purchased from Wuxi Shuguang Paint Factory) as the conductive coating mater...

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Abstract

The invention discloses a cloth cathode assembly for a microbiological fuel cell and a preparation method thereof. The cloth cathode assembly comprises a waterproof ventilation layer, a cloth base material layer and a conductive catalyst layer or comprises waterproof ventilation cloth and a conductive catalyst layer. The cloth cathode assembly adopts a low-cost non-membrane material to replace the traditional membrane material and adopts a high-stability conductive coating layer to replace an expensive cathode conductive material as a catalyst carrier and a current collector. Compared with the traditional membrane cathode, the cost of the cloth cathode assembly is reduced about 5 times to 20 times, and the cloth cathode assembly has a simple preparation process, does not needs a heat press device, can be cut or bent at will, can be used for MFC reactors with various types, such as a tube type, a square type, and the like, and is convenient to assemble.

Description

technical field [0001] The invention belongs to the technical field of environment and new energy, and in particular relates to a cloth cathode assembly for microbial fuel cells and a preparation method thereof. Background technique [0002] Microbial fuel cell (MFC) is a power generation device that directly converts chemical energy in organic matter into electrical energy, and has dual functions of power generation and organic waste disposal. MFC has a wide range of fuels. Domestic sewage, high-concentration organic wastewater, human and animal manure, etc. can be used as fuel for MFC. It can effectively remove organic matter while generating electricity. Therefore, it is an advanced biomass energy utilization technology with great development potential. It is expected to become a pillar technology for future organic waste treatment. [0003] The basic principle of MFC is: organic matter is oxidized by microorganisms in the anaerobic anode chamber as fuel, and the electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M8/16
CPCY02E60/527Y02E60/50
Inventor 周顺桂庄莉杨一览
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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