Method for preparing anode of microorganism fuel battery with graphene and ferrous disulfide compound

An iron disulfide and fuel cell technology, applied in the fields of materials, energy, and environment, can solve the problems of complex synthesis procedures, low yield, harsh reaction conditions, etc., and achieve the effects of simple synthesis steps, uniform particle morphology, and improved performance.

Active Publication Date: 2017-05-31
HARBIN INST OF TECH
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

However, most materials have complex synthesis procedures, harsh reaction conditions, and low yields. Therefore

Method used

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  • Method for preparing anode of microorganism fuel battery with graphene and ferrous disulfide compound
  • Method for preparing anode of microorganism fuel battery with graphene and ferrous disulfide compound
  • Method for preparing anode of microorganism fuel battery with graphene and ferrous disulfide compound

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specific Embodiment approach 1

[0019] Specific embodiment one: a kind of preparation method of the microbial fuel cell anode of load graphene and iron disulfide compound, described method specific steps are as follows:

[0020] Step 1: Drop ferric chloride and thiourea solution into the graphene oxide dispersion liquid in the reaction kettle drop by drop, and after stirring evenly, seal the reaction kettle, and keep the temperature between 140°C and 200°C (the optimum temperature is 180 o C) Hydrothermal reaction between 12 to 24 hours (the best reaction time is 12 hours), to obtain a hydrogel sample;

[0021] Step 2: Wash the hydrogel sample several times with deionized water, freeze-dry and pulverize to obtain graphene and iron disulfide composite nanopowder; perform X-ray crystal diffraction test on it, and it can be known that iron disulfide There are two crystal forms of marcasite and pyrite ( figure 1 ); From the scanning electron microscope image of the prepared graphene and iron disulfide composite...

specific Embodiment approach 2

[0024] Specific embodiment two: the preparation method of the microbial fuel cell anode of a kind of loaded graphene and ferric disulfide compound described in specific embodiment one, in step one, the mol ratio of ferric chloride and thiourea is 6.8:5 , the mass of thiourea is 2.0*10 of that of graphene oxide 3 times.

specific Embodiment approach 3

[0025] Specific embodiment three: the preparation method of a microbial fuel cell anode loaded with graphene and iron disulfide composite described in specific embodiment one, in step three, the Nafion solution of 7.5 μ L of 5% is used for each milligram of the nanopowder (Binder), isopropanol and deionized water are not less than 1 / 2 and 1 / 7 of the Nafion solution volume, and can be increased appropriately according to the actual situation.

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Abstract

The invention discloses a method for preparing the anode of a microorganism fuel battery with a graphene and ferrous disulfide compound, and belongs to the field of environments, materials and energy. The method comprises the following steps: (1) gradually dropping a ferric trichloride and thiourea solution into a graphene oxide dispersion in a reaction kettle one droplet by one droplet, uniformly stirring, sealing the reaction kettle, and performing hydrothermal reaction for 12-24 hours within 140-200 DEG C so as to obtain a hydrogel sample; (2) washing the hydrogel sample for times with deionized water, performing freeze-drying, and crushing so as to obtain a nano powder of the graphene and ferrous disulfide compound; (3) mixing the nano powder with a 5% nafion solution, isopropanol and deionized water, uniformly oscillating, coating carbon cloth with the solution, fixing the carbon cloth with a fixing part, and drying the carbon cloth in air, so as to obtain the anode. The method has the advantages that the synthesis steps are very simple, obtained particles are uniform in morphology, graphene lamellas are overlapped to form a well-developed porous structure, good electrochemical properties and biocompatibility can be achieved, and the anode of the microorganism fuel battery has very good properties.

Description

technical field [0001] The invention belongs to the fields of environment, materials and energy, and in particular relates to a method for preparing a microbial fuel cell anode loaded with graphene and iron disulfide composite. Background technique [0002] Microbial fuel cells are an emerging bioelectrochemical technology that can generate electricity while degrading organic matter. This makes it have broad application prospects in the fields of sewage treatment, ecological restoration and bio-energy. In microbial fuel cells, the electricity-producing microorganisms attached to the anode metabolize to generate extracellular electrons, which transfer electrons to the anode through electron mediators or nanowires, etc., and the electrons reach the cathode through the external circuit and undergo a reduction reaction with the electron acceptor. Electrogenic microorganisms are the core of microbial fuel cells. The anode is the carrier of electrogenic microorganisms, and its ma...

Claims

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Application Information

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IPC IPC(8): H01M4/583H01M4/62H01M4/58H01M8/16
CPCH01M4/5815H01M4/583H01M4/625H01M8/16Y02E60/10Y02E60/50
Inventor 刘绍琴颜美王睿文李惠东
Owner HARBIN INST OF TECH
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