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A carbon-based bioanode, its preparation method and microbial fuel cell

A bioanode and fuel cell technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of less attachment sites and limited electrochemical activity on the surface of electrode materials, and achieve cost-effective, good biocompatibility, The effect of good conductivity

Active Publication Date: 2022-05-17
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although traditional carbon electrode materials (anode materials) for microbial fuel cells have good electrical conductivity and chemical stability, these materials can provide few attachment sites for microorganisms and are limited to improve the electrochemical activity of the electrode material surface.

Method used

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  • A carbon-based bioanode, its preparation method and microbial fuel cell
  • A carbon-based bioanode, its preparation method and microbial fuel cell
  • A carbon-based bioanode, its preparation method and microbial fuel cell

Examples

Experimental program
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Effect test

Embodiment 1

[0032] A method for preparing a carbon-based bioanode, comprising the steps of:

[0033] (1) Knead and clean the sisal fibers and cut them into 1-2cm long segments, then acidify the chopped sisal fiber segments with a hydrochloric acid solution with a concentration of 10wt%, and then acidify the sisal fibers after acidification The hemp fiber is washed, dried and set aside;

[0034] (2) Mix the acidified sisal fiber with a certain amount of ferric oxide and grind it with a ball mill for 1 hour, wherein the mass of ferric oxide accounts for 15wt% of the mass of the sisal fiber; the ground mixture is After washing and drying, put it into a tube furnace for carbonization under an inert atmosphere for 2 hours. The carbonization temperature is 900°C, and the heating rate is 3°C / min. After the furnace temperature is cooled to room temperature, pass through a 200-mesh sieve to obtain a fibrous carbon material;

[0035] (3) Dissolve the iron-containing substances in the fibrous carbo...

Embodiment 2

[0044] A method for preparing a carbon-based bioanode, comprising the steps of:

[0045] (1) Knead and wash the sisal fiber and cut it into 1-2cm long sections, then acidify the chopped sisal fiber section with a hydrochloric acid solution with a concentration of 5wt%, and then acidify the sisal fiber The hemp fiber is washed, dried and set aside;

[0046] (2) Mix the acidified sisal fiber with a certain amount of ferrous oxide and grind it with a ball mill for 1 hour, wherein the mass of ferrous oxide accounts for 18wt% of the mass of the sisal fiber; the ground mixture is washed and dried After treatment, put it into a tube furnace for carbonization under an inert atmosphere for 2 hours, the carbonization temperature is 1200°C, and the heating rate is 4°C / min. After the furnace temperature is cooled to room temperature, pass through a 200-mesh sieve to obtain a fibrous carbon material;

[0047] (3) Dissolve the iron-containing substances in the fibrous carbon material obtai...

Embodiment 3

[0056] A method for preparing a carbon-based bioanode, comprising the steps of:

[0057] (1) Knead and wash the sisal fiber and cut it into 1-2cm long sections, then acidify the chopped sisal fiber section with a hydrochloric acid solution with a concentration of 5wt%, and then acidify the sisal fiber The hemp fiber is washed, dried and set aside;

[0058] (2) Mix the acidified sisal fiber with a certain quality of ferroferric oxide and grind it for 2 hours with a ball mill, wherein the mass of ferric oxide accounts for 18wt% of the mass of the sisal fiber; the ground mixture is After washing and drying, put it into a tube furnace for carbonization for 2.5 hours under an inert atmosphere. The carbonization temperature is 700°C, and the heating rate is 3°C / min. After the furnace temperature is cooled to room temperature, pass through a 200-mesh sieve to obtain fibrous carbon materials ;

[0059] (3) Dissolve the iron-containing substances in the fibrous carbon material obtain...

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Abstract

The invention discloses a carbon-based biological anode, a preparation method thereof and a microbial fuel cell, belonging to the technical field of microbial fuel cells. The preparation method includes: 1) washing and cutting sisal fibers into small pieces, and acidifying the small pieces of sisal fibers; 2) mixing the acidified sisal fibers with an iron source catalyst, grinding, and carbonizing to obtain fibrous carbon material; 3) Dissolve the obtained fibrous carbon material with hydrochloric acid solution to remove the iron-containing substances, wash and ball mill to obtain a black powder sample; 4) dissolve the obtained black powder sample in distilled water, stir well Transfer to a high-pressure reactor for hydrothermal reaction, and the carbon-based bioanode is obtained after the reaction is completed. The carbon-based bioanode has good biocompatibility, large specific surface area and rich pore structure, and the bioanode has good electrical conductivity, which can provide an ideal carrier for the attachment of microorganisms and the transfer of electrons .

Description

technical field [0001] The invention relates to the technical field of microbial fuel cells, in particular to a carbon-based biological anode, a preparation method thereof and a microbial fuel cell. Background technique [0002] A microbial fuel cell (MFC) is a device that uses microorganisms to degrade organic matter, thereby directly converting the chemical energy stored in the organic matter into electrical energy. Therefore, the microbial fuel cell is a new type of electrochemical device that combines solving the problem of environmental pollution with the production of new energy. It can not only treat sewage, but also convert it into electricity by degrading the organic matter in the sewage . The electrochemically active microbial characteristics and catalytic activity of the anode are one of the key factors affecting the power generation efficiency of microbial fuel cells. [0003] Although traditional carbon electrode materials (anode materials) for microbial fuel ...

Claims

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Application Information

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IPC IPC(8): H01M4/96H01M4/88H01M8/16
CPCH01M4/96H01M4/88H01M8/16Y02E60/50
Inventor 杜锐石张延余传柏饶文辉
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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