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Method for manufacturing microbiological fuel cell (MFC) based on composite nano-interface

A fuel cell and microbial technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve problems such as low power generation efficiency, improve power generation performance, increase speed and quantity, and solve environmental pollution problems.

Active Publication Date: 2011-06-01
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Technical problem: Aiming at the shortcomings of low power generation efficiency in existing microbial fuel cells, the present invention proposes a microbial fuel cell (MFC) based on a composite nano-interface preparation method

Method used

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  • Method for manufacturing microbiological fuel cell (MFC) based on composite nano-interface
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  • Method for manufacturing microbiological fuel cell (MFC) based on composite nano-interface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1 Preparation of a microbial fuel cell (MFC) anode based on a composite nanointerface

[0026] Dissolve 1mg of carbon nanotube / gold / titanium dioxide composite nanoparticles (P25) in 2ml of 1-methyl-2-pyrrolidone and disperse ultrasonically for 20min to obtain a black carbon nanotube / gold / titanium dioxide composite nanosol (mass concentration: 0.5mg / ml). Wash the cleaned glassy carbon electrode, ITO electrode, carbon paper or carbon cloth and other electrodes in acetone, absolute ethanol, and ultrapure water respectively, and blow dry. Take 4-10mL carbon nanotube / gold / titanium dioxide composite nanosol with a micro-sampler and evenly drop-coat it on the conductive surface of the relevant electrode, and place it in a desiccator to dry to obtain the modified electrode. Wherein, the volume of the carbon nanotube / gold / titanium dioxide composite nanosol to be measured may be any value in the range of 4-10 mL.

[0027]

Embodiment 2

[0028] Example 2 Preparation of a microbial fuel cell (MFC) anode based on a composite nanointerface

[0029] Dissolve 1mg of carbon nanotube / gold / titanium dioxide composite nanoparticles (P25) in 2ml of 1-methyl-2-pyrrolidone and disperse ultrasonically for 20min to obtain a black carbon nanotube / gold / titanium dioxide composite nanosol (mass concentration: 0.5mg / ml). Wash the cleaned glassy carbon electrode, ITO electrode, carbon paper or carbon cloth and other electrodes in acetone, absolute ethanol, and ultrapure water respectively, and blow dry. Take 8mL of carbon nanotube / gold / titanium dioxide composite nanosol with a micro-sampler and evenly drop-coat it on the conductive surface of the relevant electrode, and place it in a desiccator to dry to obtain the anode electrode modified by the nano-self-assembly system.

[0030]

Embodiment 3

[0031] Example 3 Electrochemical response of electrochemical probes on composite nanointerfaces

[0032]Using a three-electrode system, silver wire is used as a reference electrode, platinum wire is used as an auxiliary electrode, and the electrodes before and after modifying carbon nanotubes / gold / titanium dioxide nanoparticles are respectively used as working electrodes to study electrochemical methods such as potassium ferricyanide. Electrochemical properties of the probes at these two interfaces. It was found that the composite nanointerface can significantly accelerate the electron transfer rate compared with the bare electrode conductive interface. E.g, figure 1 is the cyclic voltammogram of potassium ferricyanide, in which red is the bare glassy carbon electrode, blue is the modified electrode, from figure 1 It can be seen that the peak current of potassium ferricyanide on the composite nanointerface is significantly enhanced compared with the bare electrode, indic...

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Abstract

The invention provides a method for manufacturing a microbiological fuel cell (MFC) based on a composite nano-interface. The manufacturing method comprises the following steps: preparation of an anode; and preparation of a cathode. A previously-manufactured modified electrode and a previously-manufactured platinum-doped electrode are respectively used as the anode and cathode of the MFC. The related composite nano-interface can be used as the anode of the MFC. Since the MFC is modified by a nano-material which has the advantages special surface effect, volume effect and quantum size effect, the specific area of the anode of the MFC and microbiological adhesion can be improved, thereby remarkably improving the electricity-producing efficiency of the MFC. A result proves that the electricity-producing efficiency of the MFC which is manufactured in a self-assembly mode by the manufacturing method is greatly improved.

Description

technical field [0001] The invention relates to the field of new energy, in particular to a preparation method of a novel microbial fuel cell. Background technique [0002] After the 1950s, due to the outbreak of the oil crisis, which had a huge impact on the world economy, international public opinion began to pay attention to the world's "energy crisis". Many people even predict that the world's oil resources will be exhausted, and the energy crisis will be inevitable. If major efforts are not made to utilize and develop various energy resources, then human beings will face serious problems of energy shortage in the near future. The world energy crisis is a man-made energy shortage. Oil resources will be depleted within a generation. Its reserves are not unlimited, and there are not many reserves that are easy to exploit and utilize. The development of the remaining reserves is becoming more and more difficult, and the value of continued mining will be lost to a certain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/16H01M4/88
CPCY02E60/527Y02E60/50Y02P70/50
Inventor 王雪梅张晓璐姜晖李景源吴晓静张园园张殷朱
Owner SOUTHEAST UNIV
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