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Microbial fuel cell, cathode, cathode catalyst and preparation methods thereof

A cathode catalyst and fuel cell technology, applied in biochemical fuel cells, physical/chemical process catalysts, battery electrodes, etc., can solve the problems of high price, restricting the development and application of MFC, and limited sources, and achieve low cost and oxygen catalytic reduction The effect of excellent performance and wide source of raw materials

Inactive Publication Date: 2014-09-03
SOUTH CHINA NORMAL UNIVERSITY
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  • Description
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Problems solved by technology

Since the efficiency of oxygen reduction at the cathode directly affects the power generation of the entire MFC, the improvement of the cathode oxygen reduction catalyst and the increase in the surface area are conducive to the effective progress of the oxygen reduction process. At present, platinum (Pt) is commonly used as the cathode oxygen reduction catalyst. , although the ideal performance has been obtained, but its source is not wide, the price is expensive,
[0004] and complex process seriously restrict the development and application of MFC

Method used

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  • Microbial fuel cell, cathode, cathode catalyst and preparation methods thereof
  • Microbial fuel cell, cathode, cathode catalyst and preparation methods thereof
  • Microbial fuel cell, cathode, cathode catalyst and preparation methods thereof

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Embodiment 1

[0028] The preparation method of MFC of the present invention mainly comprises following flow process:

[0029] The first step is to prepare the cathode catalyst: first, at room temperature, get 50 milliliters of 0.04 mol / liter potassium permanganate solution, adjust its pH value to 12 with 0.1 mol / liter sodium hydroxide solution, and then add the permanganese Add 100 milliliters of 0.03 mol / liter manganese acetate solution to potassium acid potassium solution, stir with a glass rod while adding, react to form a tan precipitate, wash the precipitate with deionized water, filter the precipitate and place it at 60 degrees Celsius Dry overnight to obtain amorphous manganese dioxide; then, weigh 0.348 grams of amorphous manganese dioxide and 0.476 grams of cobalt chloride 6 hydrate, mix the two in 20 milliliters of deionized water, and ultrasonically treat them for 30 minutes to make them fully Mix well, and at room temperature, while stirring with strong magnetic force, excessive...

Embodiment 2

[0038] The preparation method of MFC of the present invention mainly comprises following flow process:

[0039] The first step is to prepare the cathode catalyst: first, at room temperature, get 50 milliliters of 0.04 mol / liter potassium permanganate solution, adjust its pH value to 12 with 0.1 mol / liter sodium hydroxide solution, and then add the permanganese Add 100 milliliters of 0.03 mol / liter manganese acetate solution to potassium acid potassium solution, stir with a glass rod while adding, react to form a tan precipitate, wash the precipitate with deionized water, filter the precipitate and place it at 60 degrees Celsius Dry overnight to obtain amorphous manganese dioxide; then, weigh 0.348 grams of amorphous manganese dioxide, 0.476 grams of cobalt chloride 6 hydrate and 0.012 grams of carbon nanotubes, mix the three in 20 milliliters of deionized water, and ultrasonicate for 30 Minutes, the two are fully mixed evenly, at room temperature, while strong magnetic stirrin...

Embodiment 3

[0048] The preparation method of MFC of the present invention mainly comprises following flow process:

[0049] The first step is to prepare the cathode catalyst: first, at room temperature, get 50 milliliters of 0.04 mol / liter potassium permanganate solution, adjust its pH value to 12 with 0.1 mol / liter sodium hydroxide solution, and then add the permanganese Add 100 milliliters of 0.03 mol / liter manganese acetate solution to potassium acid potassium solution, stir with a glass rod while adding, react to form a tan precipitate, wash the precipitate with deionized water, filter the precipitate and place it at 60 degrees Celsius Dry overnight to obtain amorphous manganese dioxide; then, weigh 0.348 gram of amorphous manganese dioxide, 0.476 gram of cobalt chloride 6 hydrate and 0.155 gram of carbon nanotubes, mix the three in 20 milliliters of deionized water, and perform ultrasonic treatment for 30 Minutes, the two are fully mixed evenly, at room temperature, while strong magn...

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Abstract

The invention discloses a cathode catalyst of a microbial fuel cell, a cathode, a microbial fuel cell, a preparation method of the cathode catalyst of the microbial fuel cell, and a preparation method of the microbial fuel cell. The cathode catalyst is a composite material of spinel cobalt manganate, or a carbon nano tube loaded spinel cobalt manganate, and has excellent oxygen catalytic reduction performance. On the premise of ensuring the energy output efficiency of the microbial fuel cell, because raw materials are wide in sources, low in cost and strong in stability, the production cost of the cathode and the microbial fuel cell can be greatly reduced, and the popularization and application of the microbial fuel cell are facilitated.

Description

technical field [0001] The invention relates to the field of microbial fuel cells, in particular to a cathode catalyst for a microbial fuel cell, a cathode, a microbial fuel cell, a preparation method for a cathode catalyst for a microbial fuel cell, and a preparation method for a microbial fuel cell. Background technique [0002] With the increasingly severe problems such as the depletion of fossil fuels, the research on alternative energy and renewable energy has received more and more attention. In recent years, Microbial Fuel Cell (MFC), a power generation device that can directly convert chemical energy into electrical energy, has gradually become a research hotspot in the field of emerging energy due to its unique advantages. From the point of view of the electricity generation mechanism of MFC, although the anode is the carrier for the attachment of electrogenic microorganisms, it has an important impact on the electricity generation performance of MFC due to its infl...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M8/16B01J23/889
CPCY02E60/527H01M4/9016H01M4/9083H01M8/16Y02E60/50Y02P70/50
Inventor 李伟善罗序绵王亚琼陈晓乔刘有毅李斯特
Owner SOUTH CHINA NORMAL UNIVERSITY
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