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Microbial fuel cell based on trimethylamine oxide medium

A trimethylamine oxide and fuel cell technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of a large number of unfavorable microorganisms attached, narrow catalytic performance, small anode surface area, etc., to ensure proton conductivity, increase Good effect of microbial adsorption and catalytic performance

Inactive Publication Date: 2016-02-24
CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing microbial fuel cells generally have the disadvantage of low electricity production; at the same time, the surface area of ​​the anode in the prior art is generally small, which is not conducive to the attachment of a large number of microorganisms, and the catalytic performance is narrow; in the prior art, platinum is mostly used as Cathodic catalyst, although the catalytic effect is good, but too expensive

Method used

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  • Microbial fuel cell based on trimethylamine oxide medium
  • Microbial fuel cell based on trimethylamine oxide medium
  • Microbial fuel cell based on trimethylamine oxide medium

Examples

Experimental program
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Effect test

Embodiment 1

[0042] Such as Figure 1 to Figure 4 As shown, a microbial fuel cell based on trimethylamine p-oxide medium includes a reactor 1 arranged in the casing 11 and a battery positive electrode 8 and a battery negative electrode 9 arranged outside the casing 11, and the bottom of the battery positive electrode 8 is connected to the reactor 1; the bottom of the negative electrode 9 of the battery is connected to the other end of the reactor 1.

[0043] The reactor 1 includes a sealed shell 6 and an anode 2 and a negative electrode 3 arranged in the sealed shell 6, microorganisms 4 are attached to the surface of the anode 2 and the negative electrode 3, an ion exchange membrane 7 is arranged between the anode 2 and the negative electrode 3, and the anode 2 and the battery The positive pole 8 is connected, the cathode 3 is connected with the negative pole 9 of the battery, and the sealed case 6 is filled with a medium 5 .

[0044] The anode 2 is surface titanium / nitrogen doped mesopor...

Embodiment 2

[0050] Anode 2—surface titanium / nitrogen doped mesoporous graphene airgel was prepared by the following steps:

[0051] Step 1: Add graphite powder and sodium nitrate to the concentrated sulfuric acid at the mass ratio of concentrated sulfuric acid: graphite powder: sodium nitrate 65:1:0.6 in an ice bath, stir and dissolve for 30 minutes, and then add graphite powder: potassium permanganate according to the mass ratio of graphite powder: potassium permanganate Ratio 1:5, add potassium permanganate to the mixed solution, stir for 10 hours, add deionized water to the mixed solution according to the volume ratio of concentrated sulfuric acid: deionized water 1:1, and place the mixture under the condition of a vacuum degree of 0.93 Slowly raise the temperature to 52°C at a rate of 1.2°C / h, keep stirring at a constant temperature of 52°C for 22 hours, then add hydrogen peroxide to the mixed solution according to the volume ratio of concentrated sulfuric acid to hydrogen peroxide (1:...

Embodiment 3

[0054] Cathode 3 - VO 2 / S-AC foam nickel air cathode is made by the following steps:

[0055] Step 1: Mix polyvinyl alcohol and polytetrafluoroethylene evenly according to the mass ratio of 1:1 and prepare a catalytic emulsion with a concentration of 10%. Mix VO2 and S-AC evenly according to the mass ratio of 2:1. Weigh the VO2 / S-AC mixture and the catalytic emulsion at a ratio of 1:3, mix the VO2 / S-AC mixture and the catalytic emulsion by ultrasonic waves for 40 minutes, heat the mixed solution to 65°C, and keep stirring for 2 hours to break the emulsion, and obtain Catalyst layer raw material;

[0056] Step 2: Press the nickel foam into a 0.6mm sheet by a tablet press, and evenly scrape the raw material of the catalytic layer on the upper surface of the foam nickel, and then microwave it for 5 minutes under the condition of a pressure of 70kPa and a power of 100W, and the surface of the sheet The excess powder is gently swept away to obtain foamed nickel covered with a ca...

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Abstract

The invention discloses a microbial fuel cell based on a trimethylamine oxide medium, and belongs to the field of biological fuel cells. The microbial fuel cell based on the trimethylamine oxide medium comprises a reactor, a cell positive electrode and a cell negative electrode, wherein the reactor is arranged in a shell, the cell positive electrode and the cell negative electrode are arranged outside the shell, the bottom of the cell positive electrode is connected to one end of the reactor, and the bottom of the cell negative electrode is connected to the other end of the reactor. The microbial fuel cell based on the trimethylamine oxide medium has the advantages that the electrode surface activation area is large, the electrostatic interaction between microorganisms and the electrode surfaces is enhanced, microorganism adsorption performance is improved, catalysis performance is good, and therefore the cell yield is increased and the production cost is reduced.

Description

technical field [0001] The invention relates to a biological fuel cell, in particular to a microbial fuel cell based on p-trimethylamine oxide medium. Background technique [0002] As the world's population continues to increase, human beings are increasingly affected by insufficient energy resources and environmental degradation. Therefore, the development of new energy sources has been widely valued, and the use of renewable biomass energy for power generation is an effective means. Microbial fuel cells (MFC), as a new method of using microbial metabolism to generate electricity, has attracted more and more attention in recent years. It is a device that uses microorganisms as catalysts to convert chemical energy into electrical energy. Microorganisms can metabolize organic substances and generate electrical energy at the same time. However, the existing microbial fuel cells generally have the disadvantage of low electricity production; at the same time, the surface area o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/86H01M4/88H01M4/90H01M8/16
CPCH01M4/8605H01M4/88H01M4/9075H01M8/16Y02E60/50Y02P70/50
Inventor 曾丽
Owner CHENGDU 90 DEGREE IND PROD DESIGN CO LTD
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