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A kind of n-fe/fec 3 @acMicrobial fuel cell air cathode electrocatalytic material and preparation method thereof

An electrocatalytic material and fuel cell technology, applied in the direction of biochemical fuel cells, battery electrodes, electrical components, etc., can solve the problems of easy poisoning, scarcity, and high price of various compounds, so as to improve the distribution of active sites and mature the preparation process , the effect of good conductivity

Active Publication Date: 2021-04-16
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for MFCs, the high material cost (especially the cathode), as well as the low power output and energy conversion efficiency, severely inhibit the scale-up application of MFCs.
Although platinum-based catalytic materials are recognized as excellent electrocatalytic materials for oxygen reduction, they are scarce, expensive, unstable, and easily poisoned to various compounds, such as Cl - ,HS - ,CO,HSO 4- etc., making platinum-containing catalysts unsuitable for use in the field of MFCs

Method used

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  • A kind of n-fe/fec <sub>3</sub> @acMicrobial fuel cell air cathode electrocatalytic material and preparation method thereof
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  • A kind of n-fe/fec <sub>3</sub> @acMicrobial fuel cell air cathode electrocatalytic material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033]N-Fe / FEC3The preparation method of @AC microbial fuel cell air cathode composite electrocatalytic material, including the following steps:

[0034](1) 2G activated Carbon, AC was added to 100 ml of deionized water, and the ultrasonic dispersion was dispersed for 30 min, and uniformly dispersed activated carbon solution, spare;

[0035](2) Potassium 0.014mol ferride (K4Fe (CN)6· 3h2O) and 1G Polyvinylpyrrolidone (PVP) ultrasonic dispersion in the solution obtained by step (1), after the force is stirred for 3 h;

[0036](3) Slowly drop 100ml 0.187mol·L to the solution obtained from step (2)-1Iron chloride (FECL3· 6h2O) The solution was continued for 4 h, followed by static treatment at room temperature 24h;

[0037](4) Filtering the solution, ethanol and deionized water repeatedly after several times, after several times, drying overnight product is produced for the PB @ AC;

[0038](5) Place the product PB @ AC obtained by step (4) in the tube furnace, first toned at 3 ° C / min at a tempe...

Embodiment 2

[0041]N-Fe / FEC3The preparation method of @AC microbial fuel cell air cathode composite electrocatalytic material, including the following steps:

[0042](1) 2G activated Carbon, AC was added to 100 ml of deionized water, and the ultrasonic dispersion was dispersed for 30 min, and uniformly dispersed activated carbon solution, spare;

[0043](2) Potassium 0.0035mol ferride (K4Fe (CN)6· 3h2O) and 1G Polyvinylpyrrolidone (PVP) ultrasonic dispersion in the solution obtained by step (1), after the force is stirred for 3 h;

[0044](3) Slowly drop 100ml 0.0466mol·L to the solution obtained from step (2)-1Iron chloride (FECL3· 6h2O) The solution was continued for 4 h, followed by static treatment at room temperature 24h;

[0045](4) Other implementation steps are the same as in Example 1.

[0046]The resulting composite procedure N-Fe / FEC3In the middle product of @AC PB @ AC, the mass ratio of AC and PB is 2: 1.

Embodiment 3

[0048]N-Fe / FEC3The preparation method of @AC microbial fuel cell air cathode composite electrocatalytic material, including the following steps:

[0049](1) 2G activated Carbon, AC was added to 100 ml of deionized water, and the ultrasonic dispersion was dispersed for 30 min, and uniformly dispersed activated carbon solution, spare;

[0050](2) Potassium 0.0071 mol ferride (K4Fe (CN)6· 3h2O) and 1G Polyvinylpyrrolidone (PVP) ultrasonic dispersion in the solution obtained by step (1), after the force is stirred for 3 h;

[0051](3) Slowly drop 100ml 0.094mol·L to the solution obtained from step (2)-1Iron chloride (FECL3· 6h2O) The solution was continued for 4 h, followed by static treatment at room temperature 24h;

[0052](4) Other implementation steps are the same as in Example 1.

[0053]The resulting composite procedure N-Fe / FEC3In the middle product of @AC, the mass ratio of AC and PB is 1: 1.

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Abstract

The invention discloses a N-Fe / FeC 3 The preparation method of @AC microbial fuel cell air cathode composite electrocatalytic material comprises the following steps: (1) adding activated carbon to deionized water, and ultrasonically dispersing to obtain a uniformly dispersed solution for use; (2) adding potassium ferrocyanide and Ultrasonic dispersion of polyvinylpyrrolidone in the solution obtained in step (1), and then vigorously stir; (3) slowly drop ferric chloride solution into the solution obtained in step (2), continue to stir, and then stand at room temperature for aging; (4) The solution obtained in step (3) is filtered and cleaned, and then dried in an oven to obtain the product; (5) the product obtained in step (4) is placed in a tube furnace and calcined in a nitrogen environment; after that, it is cooled to room temperature, that is Obtain the composite catalytic material. The microbial fuel cell composite catalytic material prepared by the invention has good catalytic activity and good stability, simple preparation process and low price, and is suitable for the industrialized application of the microbial fuel cell.

Description

Technical field[0001]The present invention belongs to the microbial fuel cell (MFCS) electrocatalytic technology, which specifically involves a N-Fe / FEC3@AC microbial fuel cell air cathode electrocatalytic material and preparation method thereof.Background technique[0002]Microbial Fuel Cells (MFCs) is an organic matter for use electromotrogen degradation wastewater or waste, thoroughly oxidation into carbon dioxide and water, and chemically can directly convert chemical energy into electrical energy emerging clean energy technologies. However, for MFCs, high material costs (especially cathodes), and low power output and energy conversion efficiency, severely inhibit MFCs in magnifying applications. Although the platinum-catalytic material is recognized as an excellent oxygen-reducing electrocatalytic material, it is scarce, expensive, and is unstable, and is easily poisoned for a variety of compounds, such as CL.-HS-, CO, HSO4-Wait, the platinum catalyst is not suitable for use in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/90H01M8/16
CPCH01M4/9083H01M8/16Y02E60/50
Inventor 周培疆黄强盛朱珑珑张隽晔
Owner WUHAN UNIV
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