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Microbial fuel cell anode material as well as preparation method and application thereof

A fuel cell and anode material technology, applied in the field of microbial fuel cell anode material and its preparation, can solve the problems of difficult and controllable preparation of catalyst morphology, complicated preparation process, etc., and achieves promotion of rational design and controllable preparation and high catalytic efficiency , the effect of large specific surface area

Pending Publication Date: 2022-07-08
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the material still has problems such as complex preparation process and difficult controllable preparation of catalyst morphology.

Method used

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  • Microbial fuel cell anode material as well as preparation method and application thereof
  • Microbial fuel cell anode material as well as preparation method and application thereof
  • Microbial fuel cell anode material as well as preparation method and application thereof

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Effect test

Embodiment 1

[0038] The present embodiment provides a method for preparing an anode material for a microbial fuel cell, and the specific preparation steps are as follows:

[0039] (1) 0.17g of terephthalic acid was added to 40mL of DMF and stirred for 1h to dissolve to obtain solution A;

[0040] (2) 0.40g of ferric nitrate nonahydrate (III) was added to 40mL of DMF and stirred for 1h to dissolve to obtain solution B;

[0041] (3) Add solution B to solution A and stir evenly to obtain mixed solution C. The mixed solution C was placed at 200°C for 12h reaction; after the reaction was completed, the precipitate was taken, washed and dried at 60°C for 36h to obtain a metal organic framework precursor material, and the material was calcined in an air atmosphere at 350°C for 2h to obtain iron / carbon composite material, namely the catalyst;

[0042] (4) Mixing the catalyst obtained in step (3) with a polymer binder (polyvinyl alcohol) and coating the surface of the carbon felt to obtain the mi...

Embodiment 2

[0044] The present embodiment provides a method for preparing an anode material for a microbial fuel cell, and the specific preparation steps are as follows:

[0045] (1) 0.07g of fumaric acid was added to 40mL of DMF and stirred for 1h to dissolve to obtain solution A;

[0046] (2) 0.16g of ferric chloride hexahydrate (III) was added to 40mL of DMF and stirred for 1h to dissolve to obtain solution B;

[0047] (3) Add solution B to solution A and stir evenly to obtain mixed solution C. The mixed solution C was placed at 100 °C for 4 hours of reaction; after the reaction was completed, the precipitate was taken, washed, and dried at 80 °C for 18 hours to obtain a metal-organic framework precursor material. The material was calcined in an inert atmosphere at 800 °C for 3 hours to obtain iron / carbon composite material, namely the catalyst;

[0048] (4) Mixing the catalyst obtained in step (3) with a polymer binder (polytetrafluoroethylene) and coating the surface of the carbon ...

Embodiment 3

[0050] The present embodiment provides a method for preparing an anode material for a microbial fuel cell, and the specific preparation steps are as follows:

[0051] (1) 0.04 g of fumaric acid was added to 40 mL of deionized water and stirred for 1 h to dissolve to obtain solution A;

[0052] (2) 0.8 g of ferric chloride hexahydrate (III) was added to 40 mL of deionized water and stirred for 1 h to dissolve to obtain solution B;

[0053] (3) Add solution B to solution A and stir evenly to obtain mixed solution C. The mixed solution C was placed at 85°C for 24h reaction; after the reaction was completed, the precipitate was taken, washed and dried at 70°C for 24h to obtain a metal organic framework precursor material, and the material was calcined in an inert atmosphere at 900°C for 2h to obtain iron / carbon composite material, namely the catalyst;

[0054] (4) Mixing the catalyst obtained in step (3) with a polymer binder (polytetrafluoroethylene) and coating the surface of ...

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Abstract

The invention belongs to the field of microbial fuel cells, and particularly relates to a microbial fuel cell anode material as well as a preparation method and application thereof. The microbial fuel cell anode material is composed of a carrier, a catalyst and a conductive polymer binder. The catalyst is an iron / carbon composite material catalyst; the preparation method of the composite material catalyst comprises the following steps: preparing iron-based metal organic frameworks with different morphologies as precursors, and calcining to obtain the iron / carbon composite material with the corresponding morphology. The preparation method is simple and controllable, the obtained iron / carbon composite material is large in specific surface area, can provide appropriate attachment sites for microorganisms and effectively promote rapid formation of a microbial fuel cell anode biofilm, and meanwhile, the iron / carbon composite material is relatively good in conductivity and can greatly improve the power generation current of a microbial fuel cell, so that the electrochemical performance of the microbial fuel cell is improved. And the method has a certain practical application value.

Description

technical field [0001] The invention belongs to the field of microbial fuel cells, in particular to a microbial fuel cell anode material and a preparation method and application thereof. Background technique [0002] Microbial fuel cells (MFCs) are a new type of device that converts chemical energy into electrical energy, using microorganisms to oxidize and decompose organic matter to release electrons, and the electrons reach the cathode through an external circuit to generate electricity. Based on this kind of bioelectrochemical system, it can realize the treatment of organic waste and generate electricity at the same time. Although MFCs have many advantages, their power density still lags far behind other fuel cells. So far, the research on microbial fuel cells is still at the laboratory or small test level, and the battery output power is relatively low in practical applications, which is an important factor limiting its industrialization development. [0003] There ar...

Claims

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Application Information

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IPC IPC(8): H01M4/88H01M4/90H01M8/16
CPCH01M4/9041H01M4/9083H01M4/88H01M8/16Y02E60/50
Inventor 邓洪胡美华
Owner SOUTH CHINA UNIV OF TECH
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