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, t

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

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Example Embodiment

[0031] Example 1

[0032] A preparation method of carbon-based biological anode, comprising the following steps:

[0033] (1) rubbing and cleaning the sisal fibers and cut them into 1-2cm long sections, and then use the hydrochloric acid solution with a concentration of 10wt% to acidify the sisal fiber sections after the shearing, and then acidify the sisal fibers after the acidification treatment. Hemp fiber is washed, dried and set aside;

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

Example Embodiment

[0043] Example 2

[0044] A preparation method of carbon-based biological anode, comprising the following steps:

[0045] (1) rubbing and cleaning the sisal fibers and cutting them into 1-2cm long sections, then using the hydrochloric acid solution with a concentration of 5wt% to acidify the sisal fiber sections after the shearing, and then acidifying the sisal fibers after the acidification treatment. Hemp fiber is washed, dried, and ready for use;

[0046] (2) Mix the acidified sisal fiber with a certain quality of ferrous oxide and then grind it with a ball mill for 1 hour, in which the mass of ferrous oxide accounts for 18wt% of the quality of the sisal fiber; the mixture after grinding is washed and dried After treatment, it was put into a tube furnace for carbonization under an inert atmosphere for 2 hours, the carbonization temperature was 1200 °C, and the heating rate was 4 °C / min. After the furnace temperature was cooled to room temperature, it was passed through a 2...

Example Embodiment

[0055] Example 3

[0056] A preparation method of carbon-based biological anode, comprising the following steps:

[0057] (1) rubbing and cleaning the sisal fibers and cutting them into 1-2cm long sections, then using the hydrochloric acid solution with a concentration of 5wt% to acidify the sisal fiber sections after the shearing, and then acidifying the sisal fibers after the acidification treatment. Hemp fiber is washed, dried, and ready for use;

[0058] (2) Mix the acidified sisal fiber with a certain quality of ferric oxide and then grind it with a ball mill for 2 hours, wherein the quality of the ferric oxide accounts for 18wt% of the quality of the sisal fiber; After washing and drying, it was placed in a tube furnace for carbonization under an inert atmosphere for 2.5 hours, the carbonization temperature was 700 °C, and the heating rate was 3 °C / min. After the furnace temperature was cooled to room temperature, it was passed through a 200-mesh sieve to obtain fibrous...

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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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