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Application of molybdenum carbide in preparing anode of microbial fuel cell

A technology of fuel cells and microorganisms, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems that microbial fuel cells have not yet reflected the application value

Inactive Publication Date: 2010-02-24
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the deepening of research, carbides such as molybdenum carbide are expected to become new catalysts to replace rare and precious metals, but their application value has not yet been demonstrated in microbial fuel cells

Method used

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  • Application of molybdenum carbide in preparing anode of microbial fuel cell
  • Application of molybdenum carbide in preparing anode of microbial fuel cell
  • Application of molybdenum carbide in preparing anode of microbial fuel cell

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Experimental program
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Effect test

Embodiment 1

[0037] Step 1: Catalyst Preparation

[0038] 1. Put MoO at room temperature 3 Suspended in 5 ml of 30% aqueous H 2 o 2 After 50 hours, add 5ml of distilled water, pour off the supernatant, and add 1ml of 30% H to the undissolved residue. 2 o 2 , heated to about 60°C to make it dissolve, and then lowered the two solutions to mix and heat to about 80°C, the color changed from yellow to orange, and the solvent evaporated at room temperature, and crystallized molybdenum hydroperoxide was precipitated. This orange-red solvent is used as the starting solvent for the carbide precursor.

[0039] 2. Molybdenum peroxide and sucrose precursors are prepared by using 1.02g of sucrose solution in the above original solvent, heated to about 60°C to form a blue solvent, and evaporated to dryness at 120°C to form blue precursor fragments.

[0040] 3. The fragments were placed in a graphite boat and annealed in an alumina tube furnace at a temperature of 900°C, under the protection of Ar, an...

Embodiment 2

[0051] Step 1: Catalyst Preparation

[0052] The steps are as example 1

[0053] Step 2: Preparation of the base electrode

[0054] Add 108 mg of molybdenum carbide powder to 1 mL of binder (30% to 60% polytetrafluoroethylene (PTFE), polyvinylidene fluoride (PVDF)) and mix well, stir to form a paste and disperse it ultrasonically; Spread on carbon felt, then dry at 100°C to get 6mg / cm 2 Molybdenum carbide catalytic electrodes.

[0055] Step 3: Electrochemical Testing

[0056] With Pt rod ( =1mm) is the counter electrode, Ag / AgCl is the reference electrode, 5.0mM Fe(CN)63- / 4-and 0.1M KCl is the electrolyte, molybdenum carbide is added to the ethanol solution of 0.5wt% Nafion to disperse uniformly by ultrasonic, adjust Turn into a blue slurry, use a pipette gun to pipette 1 μL of the solution and drop it on the platinum electrode, and dry it in the air to form a 3mg / cm 2 The molybdenum carbide research electrode is used to investigate the resistance of molybdenum carbide ...

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Abstract

The invention discloses the application of molybdenum carbide in preparing the anode of a microbial fuel cell, in particular to a method for preparing the anode of the microbial fuel cell, in which the molybdenum carbide is used as a catalyst and the mixture of the molybdenum carbide and a binder are coated on a conductive base. Compared with a non-catalytic electrode, the molybdenum carbide is used as an anode catalyst to catalyze hydrogen to be oxidized, thereby greatly enhancing the electric energy output of microbial fuel cell; compared with a conventional Pt catalyst, the molybdenum carbide has low price and extensive source, and the microbial fuel cell assembled by taking the molybdenum carbide as the anode catalyst can stably work for a long time and has high power output. The application of the molybdenum carbide in preparing the anode of the microbial fuel cell provides the good foundation for the commercialization application of the microbial fuel cell.

Description

technical field [0001] The invention belongs to the field of microbial fuel cell manufacture, and in particular relates to using molybdenum carbide to manufacture the microbial fuel cell anode and using the anode to manufacture the microbial fuel cell. Background technique [0002] With the increasing amount of organic waste and the gradual depletion of fossil fuels, more and more attention has been paid to environmental protection and new energy development. In recent years, a device that uses microorganisms to directly convert chemical energy in organic matter into electrical energy——Microbial fuel cell (MFC) has gradually become a research hotspot in the fields of environmental pollution control and emerging energy development. Microbial fuel cells (MFCs) are the product of the combination of microbiology and fuel cell technology. Electrogenic microorganisms can degrade organic matter in the anode chamber of MFCs to generate electrons and protons. The electrons pass thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/86H01M4/90H01M4/96H01M8/16
CPCY02E60/50Y02E60/527
Inventor 曾丽珍赵少飞李伟善
Owner SOUTH CHINA NORMAL UNIVERSITY
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