Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method for improving microbial fuel cell anode performance

A fuel cell and microorganism technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of limited electron transfer capacity, poor electrochemical performance, small specific surface area, etc., and achieve strong electron transfer capacity and good electrochemical performance. Performance, the effect of large specific surface area

Inactive Publication Date: 2012-10-24
NANJING UNIV OF TECH
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that the smooth surface of the commonly used carbon material anode is not very conducive to the direct adsorption of bacteria, the specific surface area is not large, resulting in a small number of bacteria directly adsorbed on the anode, limited electron transfer ability and poor electrochemical performance. problems, and provide a method to improve the performance of microbial fuel cell anode, and the method does not need to use complex and expensive auxiliary equipment in the preparation process, and the process is simple and easy to repeat preparation

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
  • Method for improving microbial fuel cell anode performance
  • Method for improving microbial fuel cell anode performance
  • Method for improving microbial fuel cell anode performance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] This experiment is realized through the following steps: 1. Soak the carbon cloth anode in the PTFE emulsion with a mass fraction of 1% for 1 min and then dry it; up to 30%; 3. heat-treat the carbon cloth obtained in step 2 at 370°C for 30 minutes in an air atmosphere; 4. heat-treat the carbon cloth obtained in step 3 at 1000°C in an argon atmosphere for 20 minutes.

[0022] figure 1 It is the comparison diagram of the microscopic morphology of the smooth single carbon fiber (a) of the carbon cloth before the modification treatment and the rough carbon fiber (b) obtained after the modification treatment. It can be seen from the figure that the carbon cloth in (a) The fiber is relatively smooth, while the modified carbon cloth (b) shows a rough surface, and the surface morphology is in the shape of regular pores. Theoretically speaking, this is more conducive to the adsorption and reproduction of bacteria on the surface of the anode electrode, so more bacteria can condu...

Embodiment 2

[0027] This experiment is realized through the following steps: 1. Soak the carbon paper anode in PTFE emulsion with a mass fraction of 0.5% for 2 minutes and then dry it; 2. Repeat step 1 for about 40 times to reach the mass loading capacity of PTFE on the carbon paper 40%; 3. Heat-treat the carbon paper obtained in step 2 at 380°C for 35 minutes in an air atmosphere; 4. Heat-treat the carbon paper obtained in step 3 at 900°C in an argon atmosphere for 60 minutes.

[0028] The surface roughness of the carbon fiber of the modified carbon paper is obviously improved, the specific surface area is obviously increased, and the charge transfer ability is greatly increased. Figure 5It is a comparison chart of electrochemical cyclic voltammetry characteristics of carbon paper (1) before modification treatment and carbon paper (2) obtained after modification treatment. It can be seen from the figure that the peak currents of the oxidation peak and reduction peak of the cyclic voltamm...

Embodiment 3

[0031] This experiment is realized through the following steps: 1. Soak the carbon paper anode in the PTFE emulsion with a mass fraction of 2% for 1.5 minutes and then dry it; 3. Heat-treat the carbon paper obtained in step 2 at 350°C for 30 minutes in an air atmosphere; 4. Heat-treat the carbon paper obtained in step 3 at 900°C for 60 minutes in a helium atmosphere. The results show that, compared with before the modification treatment, the carbon fiber surface roughness of the carbon paper after the modification treatment is significantly improved, while the charge transfer resistance is reduced by about 25Ω, and the charge transfer ability is greatly increased.

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
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

Belonging to the field of microbial fuel cells, the invention particularly relates to a method for improving microbial fuel cell anode performance. The method specifically comprises the following steps of: 1. immersing an anode material in a polytetrafluoroethylene (PTFE) emulsion and then drying it; 2. repeating the operation in the step 1 so as to make the loading amount of PTFE on the anode material reach a preset mass loading amount; 3. conducting a heat treatment on the anode obtained in step 2 anode under an air atmosphere; and 4. subjecting the anode obtained in step 3 to a heat treatment under an inert atmosphere, thus obtaining a microbial fuel cell anode with a rough surface showing a regular pitted structure, an enlarged specific surface area, and stronger electron transfer ability. Characterized by simple process and no need for expensive experimental apparatus, the method provided in the invention can significantly improve the surface roughness of the anode material and increase the specific surface area, and substantially enhance the electron transfer ability of the anode, thus making tremendous contributions to the development of microbial fuel cells.

Description

technical field [0001] The invention relates to a method for improving the anode performance of a microbial fuel cell, belonging to the field of microbial fuel cells. Background technique [0002] Microbial fuel cell (MFC for short), as a new method of using microbial metabolism to generate electricity, began to receive attention in the early 1990s. Researchers have carried out a lot of work in the field of MFC and achieved remarkable results. Although the power density of MFC is lower than that of fuel cells, it is expected to become a core technology in the sustainable development of water resources. The power density of MFC is relatively low. The main reason is, on the one hand, the ability of microbial cells to transfer electrons to the anode is not strong, and on the other hand, it is due to the large ohmic loss in the MFC system. Therefore, it is crucial to select high-performance MFC materials, especially the anode. The impact of the anode on the MFC system is mainl...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88
CPCY02E60/50
Inventor 邵宗平杨凤银
Owner NANJING UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com