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Preparation method and application of three-dimensional porous electrode material

An electrode material, three-dimensional porous technology, applied in battery electrodes, circuits, electrical components, etc., can solve problems such as low electron transfer efficiency, and achieve the effects of enhancing electron transfer efficiency, increasing adhesion, and improving battery power density

Active Publication Date: 2013-07-10
GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all of the above materials can only make microorganisms adsorb on the surface of the material and their electron transfer efficiency is low.

Method used

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  • Preparation method and application of three-dimensional porous electrode material
  • Preparation method and application of three-dimensional porous electrode material
  • Preparation method and application of three-dimensional porous electrode material

Examples

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Effect test

Embodiment 1

[0027] A preparation method of a three-dimensional porous electrode material, comprising the following steps:

[0028] 1) Take the loofah and cut it into 2.0cm×1.5 cm×0.5 cm (length×width×thickness, measured in the natural state of the loofah);

[0029] 2) Dissolve aniline and ammonium persulfate in 1mol / L hydrochloric acid aqueous solution respectively to obtain 0.02mol / L aniline solution and 0.02mol / L ammonium persulfate solution;

[0030] 3) Add aniline solution to the container, soak the loofah in the aniline solution, then place the container in ice cubes at 0°C, add ammonium persulfate solution dropwise to the aniline solution, and the ammonium persulfate and aniline are equimolar , react at 0°C for 4 hours, at this time the color of the loofah turns green;

[0031] 4) Take out the loofah and dry it, put it into a cremation furnace, and carry out high-temperature anaerobic carbonization at a temperature of 900°C and a carbonization time of 30 minutes to obtain a three-d...

Embodiment 2

[0036] A preparation method of a three-dimensional porous electrode material, comprising the following steps:

[0037] 1) Take the loofah and cut it into 2.0cm×1.5 cm×0.5 cm (length×width×thickness, measured in the natural state of the loofah);

[0038] 2) Dissolve aniline and ammonium persulfate in 0.1mol / L hydrochloric acid aqueous solution respectively to obtain 0.03mol / L aniline solution and 0.03mol / L ammonium persulfate solution;

[0039] 3) Add aniline solution to the container, soak the loofah in the aniline solution, and add ammonium persulfate solution dropwise to the aniline solution at 2°C, and the molar ratio of aniline to ammonium persulfate is 1.5, and react 4.5 at 2°C h, the color of the loofah turns green at this time;

[0040] 4) Take out the loofah and dry it, put it into a cremation furnace, and perform high-temperature anaerobic carbonization at a temperature of 750°C and a carbonization time of 180 minutes to obtain a three-dimensional porous electrode ma...

Embodiment 3

[0042] A preparation method of a three-dimensional porous electrode material, comprising the following steps:

[0043] 1) Take the loofah and cut it into 2.0cm×1.5 cm×0.5 cm (length×width×thickness, measured in the natural state of the loofah);

[0044] 2) Dissolve aniline and ammonium persulfate in 0.5mol / L hydrochloric acid aqueous solution respectively to obtain 0.01mol / L aniline solution and 0.01mol / L ammonium persulfate solution;

[0045] 3) Add aniline solution to the container, soak the loofah in the aniline solution, and add ammonium persulfate solution dropwise to the aniline solution at 4°C, and the molar ratio of aniline to ammonium persulfate is 2, and react for 5 hours at 4°C , at this time the color of the loofah turns green;

[0046] 4) Take out the loofah and dry it, put it into a cremation furnace, and carry out high-temperature anaerobic carbonization at a temperature of 800°C and a carbonization time of 60 minutes to obtain a three-dimensional porous electr...

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Abstract

The invention discloses a preparation method and application of a three-dimensional porous electrode material. The preparation method comprises the following steps of: respectively dissolving aniline and an oxidant into acidic aqueous solution to obtain aniline solution and oxidant solution; dipping a loofah sponge into the aniline solution; dropping the oxidant solution into the aniline solution at 0 to 4 DEG C in order to implement oxidative polymerization until the loofah sponge is green; taking out the loofah sponge, and drying; and carbonizing the loofah sponge at an anaerobic condition, thus obtaining the three-dimensional porous electrode material. The three-dimensional porous electrode material prepared by the preparation method disclosed by the invention has the advantages that the specific surface area is large, the activity of the electrode material is high, the preparation method is simple and quick, and the cost is low; the three-dimensional porous electrode material can be applied to a microbial fuel cell; and compared with the conventional plate electrode, the three-dimensional porous electrode material has the advantages that the activity peak current value in the reaction of a microbial electrode is increased by more than four times, and the power density of a cell is increased by more than 2.5 times.

Description

technical field [0001] The invention relates to a preparation method and application of a three-dimensional porous electrode material. Background technique [0002] In the microbial fuel cell (MFC, microbial fuel cell) system, the excellent surface effect, structure, and size of the anode material can make the microbial electricity-producing cells attach to the biofilm efficiently, facilitate its growth, and quickly transfer electrons; at the same time , the anode material should also have good chemical stability, high electrical conductivity and other properties. [0003] At present, there are many types of MFC anode materials. After people's exploration, a series of carbon materials such as carbon cloth, carbon fiber paper, carbon paper, and carbon felt can be used as MFC anode materials, and some activated carbon materials and graphite materials are also widely used in MFC anodes. . The electricity generation properties of three anode materials, carbon paper, graphite a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88
CPCY02E60/50
Inventor 袁勇刘毅周顺桂唐家桓
Owner GUANGDONG INST OF ECO ENVIRONMENT & SOIL SCI
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