Biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, anode and preparation methods

A technology based on activated carbon and anode materials, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of accelerated extracellular interface electron transfer, unfavorable microbial adhesion and growth, high modification cost, and achieve improved interface electron transfer rate, The effect of reducing anode electron transfer resistance and high affinity

Active Publication Date: 2020-02-04
SICHUAN UNIV
View PDF6 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies in the prior art, and to provide a three-dimensional porous microbial fuel cell anode material and anode of iron carbide coated with biomass-based activated carbon, and the preparation method of the two, so as to solve the problems existing

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, anode and preparation methods
  • Biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, anode and preparation methods
  • Biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, anode and preparation methods

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] In this embodiment, a method for preparing an anode material and an anode for a three-dimensional iron carbide porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:

[0044] (1) Dry the biomass raw distiller’s grains, then carbonize at 450°C for 1.5 hours and cool to room temperature to obtain a carbonized material. Add 2mL K per 1g of carbonization 2 CO 3 The ratio of the solution to the concentration of 1mol / L K 2 CO 3 Then add ferric chloride solution to make the mass ratio of iron to carbonized material 10%, and ultrasonically mix in a water bath at 40kHz for 30min, so that iron ions are fully absorbed into the pore structure of the carbonized material, and then dried at 100°C. A carbonized material mixture is obtained.

[0045] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 Treated at 850°C for 2h in an atmosphere. During the c...

Example Embodiment

[0047] Example 2

[0048] In this embodiment, a method for preparing an anode material and an anode for an iron carbide three-dimensional porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:

[0049] (1) Dry the biomass raw distiller’s grains, then carbonize at 550°C for 2h, and cool to room temperature to obtain a carbonized material. Add a KOH solution with a concentration of 3mol / L at the ratio of adding 3mL KOH solution to 1g of carbonized material, and then add nitric acid. The iron solution makes the mass ratio of iron to the carbonized material 2%, and ultrasonically mixes the iron in a water bath for 30 minutes under the condition of 40 kHz to fully adsorb iron ions into the pore structure of the carbonized material, and then is dried at 100° C. to obtain a carbonized material mixture.

[0050] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 In the a...

Example Embodiment

[0053] Example 3

[0054] In this embodiment, a method for preparing an anode material and an anode for an iron carbide three-dimensional porous microbial fuel cell coated with biomass-based activated carbon is provided. The steps are as follows:

[0055] (1) Dry the biomass raw distiller’s grains, then carbonize at 500°C for 1 hour, and cool to room temperature to obtain a carbonized material. Add KOH solution with a concentration of 2mol / L at the ratio of 5mL KOH solution per 1g of carbonized material, and then add nitric acid. The iron solution makes the mass ratio of iron and the carbonized material 5%, and ultrasonically mixes the iron ions into the pore structure of the carbonized material under the condition of 40 kHz in a water bath for 30 minutes, and then is dried at 100° C. to obtain a carbonized material mixture.

[0056] (2) Place the carbonized material mixture obtained in step (1) in a crucible with a gas circulating, in the flowing N 2 Treated at 800℃ under constant t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Apertureaaaaaaaaaa
Average pore sizeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides a biomass-based activated carbon coated iron carbide three-dimensional porous microbial fuel cell anode material, which is composed of biomass-based activated carbon and iron carbide, wherein iron carbide is distributed in the biomass-based activated carbon and is coated by the biomass-based activated carbon to form micron-sized activated carbon-coated iron carbide particles, and the anode material has a three-dimensional porous network structure consisting of micron and nano composite holes. The invention also provides a microbial fuel cell anode based on the anode material, and preparation methods of the anode material and the anode. According to the invention, the problems of unfavorable attached growth of microorganisms and high modification cost of the existingmodified three-dimensional carbon-based electrode are solved, and the attached growth of an anode biological membrane can be promoted and the electron transfer of an extracellular interface can be accelerated while the cost of the microbial fuel anode is reduced.

Description

technical field [0001] The invention belongs to the technical field of microbial fuel cells, and relates to a three-dimensional porous microbial fuel cell anode material of iron carbide coated with biomass-based activated carbon, an anode and a preparation method thereof. Background technique [0002] Microbial Fuel Cell (MFC) is a new type of simultaneous wastewater treatment and energy recovery technology that uses microorganisms to convert the chemical energy contained in wastewater into electrical energy. It is a sustainable green energy technology with broad application prospects. However, the low power generation efficiency and high production cost of MFC limit its large-scale application. In MFCs, electrogenic microorganisms generate electrons by metabolically degrading organic substrates, and electrons are transferred from the cell surface of microorganisms to the anode surface. Due to the slow transfer of extracellular electrons between electrogenic microorganisms a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): H01M4/86H01M4/96H01M4/88H01M8/16
CPCH01M4/8605H01M4/8657H01M4/88H01M4/8828H01M4/96H01M8/16H01M2004/8689Y02E60/50
Inventor 谢汝桢王晖杨平
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products