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Nitrogen and phosphor-doped biomass carbon material synthetic method and application of biomass carbon material in microbiological fuel cell cathode

A biomass carbon and synthetic method technology, applied in biochemical fuel cells, battery electrodes, circuits, etc., can solve the problems of slow electron kinetic transfer rate, hinder widespread commercialization, and high price, and achieve good microbial cathode oxygen reduction catalysis. Activation, reduction of cathodic activation overpotential, and the effect of increasing power density

Inactive Publication Date: 2017-11-24
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] Although platinum-based catalysts have the best ORR catalytic activity, they have some disadvantages such as high cost, slow electron kinetic transfer rate, and easy aggregation under alkaline conditions, which hinder their widespread commercialization.

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  • Nitrogen and phosphor-doped biomass carbon material synthetic method and application of biomass carbon material in microbiological fuel cell cathode
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  • Nitrogen and phosphor-doped biomass carbon material synthetic method and application of biomass carbon material in microbiological fuel cell cathode

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Embodiment example

[0029] 1. The generation of biomass carbon materials;

[0030] (1) Pretreatment of biomass: honeycomb is used as carbon source, at 500mg / L Na 2 CO 3 Soak in the solution for 1 hour, filter with suction, rinse with deionized water, and vacuum dry at 60°C for 12 hours, set aside.

[0031] (2) The production of biomass carbon materials: the pretreated biomass is put into a porcelain bowl, calcined in a tube furnace, and argon is introduced. The temperature is raised from room temperature to 600°C and 700°C at 3°C / min. There are three different temperatures of ℃ and 800℃, which are kept for 5h at each maximum temperature. Naturally cool to room temperature. It is fired at three different temperatures to obtain biomass carbon materials fired at three different temperatures. After taking it out, it is a black solid, grind and set aside.

[0032] 2. Synthesis of N / P-C composite materials doped with nitrogen and phosphorus heteroatoms;

[0033] (1) Oxidation of biomass carbon material: The...

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Abstract

The invention discloses a nitrogen and phosphor-doped biomass carbon material synthetic method and an application of the biomass carbon material in a microbiological fuel cell cathode. The method comprises the following steps: taking cellular biomass as a substrate, after pretreatment, respectively sintering the cellular biomass to a carbon material under inert atmosphere at the temperatures of 600 DEG C, 700 DEG C and 800 DEG C, taking cellular as a carbon source, respectively taking melamine and 1,2-vinyl diphosphate as a nitrogen source and a phosphorus source, mixing the raw materials according to a certain proportion for doping, performing a hydrothermal reaction for 5 h in a reaction vessel at the temperature of 100 DEG C, and successfully preparing a nitrogen and phosphor-doped carbon N / P-C semispherical porous microbe cathode material. The method has the advantages that the microbe cathode oxygen reduction catalytic activity is increased, the biomass carbon material has more excellent cycle stability, catalysis electrode charge transfer impedance is reduced, the electron transfer rate is accelerated, a cathode oxygen reduction reaction is promoted, and the provided electric energy can supplies the requirements of other fields.

Description

Technical field [0001] The invention relates to a method for synthesizing nitrogen-doped and phosphorus-doped biomass carbon materials and its application in the cathode of microbial fuel cells. Background technique [0002] Due to the global shortage of fossil energy and the huge harm to the environment caused by the mining and use of fossil energy, it is urgent to explore renewable and environment-friendly new energy. Microbial Fuel Cells (Microbial Fuel Cells, MFCs), as a new and challenging field, is a device that can realize energy conversion and has a production capacity. It can directly convert the chemical energy contained in the complex organic biomass into electric energy (that is, to realize organic water treatment and convert the organic energy in wastewater into usable electric energy), so it has attracted widespread attention from all over the world. The rapid progress of research. However, therefore, microbial fuel cells are still far from meeting the requirement...

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Application Information

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IPC IPC(8): H01M4/90H01M4/96H01M8/16
CPCH01M4/9091H01M4/96H01M8/16Y02E60/50
Inventor 次素琴毕琳琳
Owner NANCHANG HANGKONG UNIVERSITY
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