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Preparation method of nanofiber/electrogenerating bacteria film for microbial fuel cell

A technology of nanofibers and fuel cells, applied in biochemical fuel cells, battery electrodes, nanotechnology for materials and surface science, etc., can solve the problem of low bacterial load power density, limited electrode surface area per unit mass and unit volume, bacteria It is difficult to enter and attach, and achieve the effects of shortening the preparation time, increasing the amount of electrogenic bacteria attached, and increasing the rate of extracellular charge transfer

Active Publication Date: 2021-04-06
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

However, the larger bacterial size (e.g., Shewanella 2.5 μm long and 0.5 μm wide) makes it difficult for bacteria to enter and attach to the inner surface of mesoporous / microporous electrodes, thereby limiting the surface area per unit mass and unit volume of the electrode, Leads to lower bacterial load and limited power density

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  • Preparation method of nanofiber/electrogenerating bacteria film for microbial fuel cell
  • Preparation method of nanofiber/electrogenerating bacteria film for microbial fuel cell
  • Preparation method of nanofiber/electrogenerating bacteria film for microbial fuel cell

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[0021] The invention provides a method for preparing a nanofiber / electrogenetic bacteria film for a microbial fuel cell.

[0022] Such as figure 1 As shown, the method firstly uses electrospinning technology to prepare nanofibers, and then the prepared nanofibers and electrogenic bacteria are co-filtered to prepare a nanofiber / electrogenic bacteria film as an anode material. Specifically: use electrospinning technology to prepare nanofibers, the prepared nanofibers are conductive nanofibers, which can be directly obtained by electrospinning conductive polymers (such as polyaniline, polythiophene, etc.), or can be conductive nanofibers after carbonization. Fibers (such as polyacrylonitrile, polyvinylpyrrolidone, polymethylmethacrylate, etc.). Subsequently, the conductive nanofibers and electrogenic bacteria were co-filtered to obtain a three-dimensional interwoven porous anode material. The nanofibers prepared in the present invention can also adopt but not limited to high-sp...

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Abstract

The invention provides a method for preparing a nanofiber / electrogenerating bacteria film for a microbial fuel cell, which belongs to the technical field of microbial fuel cells. In the method, nanofibers are firstly prepared by electrospinning technology, and then the prepared nanofibers and electrogenic bacteria are co-filtered to prepare a nanofiber / electrogenic bacteria film as an anode material. The present invention realizes the increase of the effective contact area between the electrogenic bacteria and the electrode material, greatly increases the number of electrogenic bacteria attached to the inner surface and the utilization rate of the inner surface, and significantly improves the transfer efficiency of electrons at the interface between the electrogenic bacteria and the electrode, Improvement of battery output power density. The invention has the advantages of excellent performance, simple process, easy large-scale production, low cost and the like, and has important application value in the field of microbial fuel cells.

Description

technical field [0001] The invention relates to the technical field of microbial fuel cells, in particular to a method for preparing a nanofiber / electrogenerating bacteria film for microbial fuel cells. Background technique [0002] Microbial fuel cell (MFC) is an energy conversion device that uses electrogenic microorganisms to catalyze the degradation of organic matter and convert the chemical energy stored in the organic matter into electrical energy. Because of its own advantages of sustainable bioremediation and electricity generation, it occupies an important position in the fields of clean environment, energy storage and conversion. How to improve the comprehensive performance index of microbial fuel cells, including increasing the power output level and shortening the start-up time of the device, is the research focus of microbial power generation. It is considered to be a key to solve the above problems by rationally designing the structure of the anode (including ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88H01M8/16B82Y30/00
CPCB82Y30/00H01M4/8875H01M4/8878H01M8/16Y02E60/50Y02P70/50
Inventor 李从举张秀玲
Owner UNIV OF SCI & TECH BEIJING
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