Preparation method of nanofiber/electrogenesis bacterium film for microbial fuel cells

Abstract

The invention provides a preparation method of a nanofiber / electrogenesis bacterium film for microbial fuel cells, and belongs to the technical field of microbial fuel cells. According to the method,nanofibers are first prepared by utilizing an electrostatic spinning technology, and then, a nanofiber / electrogenesis bacteria film is prepared from the prepared nanofibers and electrogenesis bacteriain a co-suction filtration manner to serve as an anode material. The effective contact area of the electrogenesis bacteria and the electrode material is increased, the number of electrogenesis bacteria adhered onto the inner surface and the utilization rate of the inner surface are greatly improved, the transport efficiency of electrons on the interface of the electrogenesis bacteria and an electrode is obviously improved, and the output power density of cells is improved. The nanofiber / electrogenesis bacterium film has the advantages of excellent performance, simple process, easiness in 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 ...

AI Technical Summary

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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