Microbial fuel cell anode material with three-dimensional open structure and preparation method

Abstract

The invention provides a microbial fuel cell anode material with a three-dimensional open structure and a preparation method. The microbial fuel cell anode material adopts a multilayered structure composed of nanocarbon, sponge, activated carbon and a metal current collector. The preparation method mainly comprises the following steps: pretreating a sponge matrix, preparing 3D nanocarbon and sponge conductive material by adopting the dipping-drying method, and fixing 3D carbon material conductive matrix on the metal current collector coated with the activated carbon to prepare the 3D multilayered anode material. The microbial fuel cell anode material, disclosed by the invention, facilitates attachment of plenty of mass transfer and creatures and is simple in preparing processes and low in cost; in addition, an MFC structured by taking the microbial fuel cell anode material as the anode is greatly improved in electricity generation performance of the anode, obviously reduced in polarization phenomenon, and has a great application prospect.

Description

technical field [0001] The invention relates to a microbial fuel cell anode material. The invention also relates to a preparation method of the microbial fuel cell anode material. Background technique [0002] Microbial fuel cell (MFC) is an ideal device that uses microorganisms as an anode catalyst to directly convert chemical energy stored in organic matter into electrical energy. The research of Logan et al. on synchronous microbial electricity production and sewage biological treatment simultaneously realized organic waste treatment and clean electricity production, making MFC technology a research hotspot in the field of energy and environment, and provided a new idea for simultaneously solving energy problems and protecting the environment. Since the introduction of MFC technology, researchers from various countries have conducted a large number of experimental studies, including improving battery configuration, developing efficient and cheap electrode materials, opti...

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Problems solved by technology

For this reason, some researchers have developed some anode materials with special structures with large specific surface areas. For example, Logan et al. prepared graphite fiber brush electrodes, which greatly improved the power generation of MFC, but the spatial distribution between the fibers was uneven, and there were microorganisms attached to them. The fibers may stick together, so that the entire surface area will not be used effectively, causing the electricity generation performance of the MFC to be affected

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