Negative pole of enzymatic biofuel cell as well as preparation method and application of negative pole

A biofuel cell and cathode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of few carbon nanotube chemical binding sites, affecting the application of carbon nanotubes, prone to agglomeration, etc., and achieving a simple and effective preparation method. , good electrical conductivity, easy to operate

Inactive Publication Date: 2013-09-25
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Although carbon nanotubes will improve the performance of enzyme electrodes, there are some problems in the application of carbon nanotubes: one is that the hydrophobic surface of carbon nanotubes makes it very poorly dispersed in water, and it is easy to agglomerate; Fewer chemical binding sites, these problems will affect the application of carbon nanotubes
However, the use of Cymbal blue to modify carbon nanotubes has not been reported

Method used

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  • Negative pole of enzymatic biofuel cell as well as preparation method and application of negative pole
  • Negative pole of enzymatic biofuel cell as well as preparation method and application of negative pole
  • Negative pole of enzymatic biofuel cell as well as preparation method and application of negative pole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] I. Preparation of bioanode CNT / CB / HRP for enzyme biofuel cell:

[0058] (1) Take 10 mg of carbon nanotubes, soak them in acetone for 30 minutes, then filter, wash with distilled water, and dry; then add the cleaned carbon nanotubes into concentrated H 2 SO 4 / concentrated HNO 3 (The volume ratio is 3:1) Ultrasound at 30°C and 100Hz for 6h in the mixed acid solution, filter, clean with distilled water, and dry in a vacuum oven at 100°C for 4h to obtain treated carbon nanotubes;

[0059] (2) Take 4 mg of the carbon nanotubes treated in step (1) and add them to an aqueous solution containing 1 mmol / L Cymbal blue. After ultrasonication at 40 °C and 100 Hz for 6 h, stir the solution continuously, add 1 g of NaCl, react at 60 °C for 1 h, and then Add 0.1g Na 2 CO 3 , reacted at 80°C for 8h to obtain the mixture; the mixture was centrifuged and dialyzed to remove unfixed Cymbal blue, then dried in a vacuum oven at 80°C, and ground to obtain a multi-walled carbon nanotube / ...

Embodiment 2

[0072] I. Preparation of biocathode CNT / CB / HRP for enzyme biofuel cell:

[0073] The preparation method of the biocathode CNT / CB / HRP of the enzyme biofuel cell is the same as that in Example 1.

[0074] II. Anode manufacturing method and battery assembly test:

[0075] Anode and anode chamber solution are with embodiment 1;

[0076] The cathode chamber solution is 0.2mol / L, PBS phosphate buffer solution with pH=7.0, which contains 0.2mol / L tert-butanol peroxide;

[0077] The battery assembly method is the same as in Example 1.

[0078] It is detected that the maximum power density of the enzyme biofuel cell obtained in this embodiment is 58 μW / cm 2 .

Embodiment 3

[0080] I. Preparation of raw cathode CNT / HRP for enzyme biofuel cell:

[0081](1) Take 10 mg of carbon nanotubes, soak them in acetone for 30 minutes, then filter, wash with distilled water, and dry; then add the cleaned carbon nanotubes into concentrated H 2 SO 4 / concentrated HNO 3 (The volume ratio is 3:1) Ultrasound at 30°C and 100Hz for 6h in the mixed acid solution, filter, clean with distilled water, and dry in a vacuum oven at 100°C for 4h to obtain treated carbon nanotubes;

[0082] (2) Take 4 mg of carbon nanotubes treated in step (1) and add them to the aqueous solution. After ultrasonication at 40°C and 100Hz for 6 hours, stir the solution continuously, add 1g NaCl, react at 60°C for 1 hour, and then add 0.1g NaCl 2 CO 3 , reacted at 80°C for 8h to obtain a mixture; centrifuge the reacted mixture, then dry it in a vacuum oven at 80°C, and grind it to obtain a multi-walled carbon nanotube material. Dispersion liquid, 40 ℃, 100Hz ultrasonic 2h;

[0083] (3) Tak...

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Abstract

The invention discloses a negative pole of an enzymatic biofuel cell as well as a preparation method and application of the negative pole. The negative pole is prepared by taking carbon paper as an electrode substrate, an enzyme as a catalyst and a carbon nano-tube/cibacron blue composite as an enzyme carrier, wherein the carbon nano-tube/cibacron blue composite is a carbon nano-tube modified by cibacron blue. The negative pole of the enzymatic biofuel cell disclosed by the invention has rich surface active groups which provide rich bonding sites for the load of enzyme, and has favorable conductivity; an enzymatic biofuel cell electrode prepared by the negative pole of the enzymatic biofuel cell can be used for greatly increasing the power density of the enzymatic biofuel cell.

Description

technical field [0001] The invention belongs to the technical field of enzyme biofuel cells, and in particular relates to an enzyme biofuel cell cathode and a preparation method and application thereof. Background technique [0002] A biofuel cell is a type of battery that uses enzymes or microbial tissues as catalysts to directly convert the chemical energy of fuel into electrical energy. It can be divided into enzyme fuel cell and microbial fuel cell according to the working method. The biocatalysts used in microbial fuel cells are actually not microbial cells, but the enzymes in them, and their essence is to use the enzymes in microorganisms to work. Compared with enzymatic biofuel cells, the working efficiency of microbial batteries is low, mainly due to more side reactions, resulting in relatively difficult electron transfer between them and electrodes, and at the same time, the reaction process is relatively complicated and difficult to control. Therefore, enzyme bio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/88H01M4/90
CPCY02E60/50
Inventor 朴金花张秀花吕稳姜建国
Owner SOUTH CHINA UNIV OF TECH
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