Synthetic method for nitrogen-doped porous carbon, and application of nitrogen-doped porous carbon in positive electrode of microbial fuel cell

A nitrogen-doped porous carbon, synthesis method technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of large anode activation overpotential, loss of electron reducibility, high energy, etc., and reduce anode activation overpotential. , The effect of increasing power density and large specific surface area

Inactive Publication Date: 2016-12-07
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

Although carbon materials have good electrical conductivity, which is conducive to the conduction of electrons, the surface energy state of carbon elements is relatively high, and it i

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  • Synthetic method for nitrogen-doped porous carbon, and application of nitrogen-doped porous carbon in positive electrode of microbial fuel cell
  • Synthetic method for nitrogen-doped porous carbon, and application of nitrogen-doped porous carbon in positive electrode of microbial fuel cell
  • Synthetic method for nitrogen-doped porous carbon, and application of nitrogen-doped porous carbon in positive electrode of microbial fuel cell

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[0023] 1. Synthesis of nitrogen-doped porous carbon N-C material: Weigh 1g of melamine and 10g of sodium citrate, mix them, grind them evenly in a mortar, and put them into a porcelain cup. Then put the porcelain cup into a tube furnace for calcination. The calcination temperature is raised from 20°C to 800°C at a rate of 5°C / min, kept at 800°C for 5 hours, and naturally cooled to room temperature to obtain a black solid, that is, nitrogen-doped porous carbon composites, such as figure 1 shown.

[0024] 2. Subsequent impurity removal of nitrogen-doped porous carbon N-C material: After grinding the solid material generated in 1, wash it with 0.1M dilute hydrochloric acid and deionized water in sequence, and dry it in a vacuum oven at 80°C for 12 hours to form a black porous Solid, synthetic materials with morphology such as figure 2 shown.

[0025] 3. Nitrogen-doped porous carbon N-C material is mixed with corresponding solvents and adhesives to make a slurry and coated on ...

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Abstract

The invention discloses a synthetic method for nitrogen-doped porous carbon N-C, and an application of the nitrogen-doped porous carbon in a positive electrode of a microbial fuel cell. The synthetic method comprises the following steps of taking melamine as a nitrogen source, and taking sodium citrate as a carbon source, mixing and grinding the melamine and the sodium citrate based on a certain proportion; and calcining the mixture in inert gas Ar at a temperature of 800 DEG C for 5h to successfully prepare the nitrogen-doped porous carbon N-C which is used as the microbial positive electrode material. The synthetic method and the application have the advantages as follows: on one hand, when the nitrogen-doped porous carbon N-C is used as the positive electrode of the microbial fuel cell, the attachment of electrogenesis microbes in the positive electrode can be facilitated; and on the other hand, the positive electrode activation overpotential is lowered, so that the electrogenesis power density of the microbial fuel cell is remarkably improved.

Description

technical field [0001] The invention relates to a synthesis method of nitrogen-doped porous carbon and its application in microbial fuel cell anodes. Background technique [0002] Due to the shortage of global fossil energy and the huge harm to the environment caused by the exploitation and use of fossil energy, it is imminent to explore renewable and environmentally friendly new energy. Microbial Fuel Cells (MFCs), as a new and challenging field, is a device that can achieve energy conversion and has capacity. It can directly convert the chemical energy contained in complex organic biomass into electrical energy (that is, realize organic water treatment, and convert the energy of organic matter in wastewater into usable electrical energy), so it has attracted widespread attention from all over the world. rapid research progress. However, therefore, microbial fuel cells are still far from meeting the requirements of actual production or living power sources. In order to im...

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Application Information

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IPC IPC(8): H01M8/16H01M4/86H01M4/88H01M4/90
CPCH01M4/8647H01M4/88H01M4/9083H01M8/16Y02E60/50
Inventor 次素琴毕琳琳
Owner NANCHANG HANGKONG UNIVERSITY
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