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A biofuel cell anode and its preparation method and application

A biofuel cell and anode technology, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of limiting battery power, stability and reproducibility, difficult quantification of carriers and mediators, and difficulty in realizing electron transfer. , to achieve the effect of electron transfer, low cost, and increased load capacity

Inactive Publication Date: 2015-08-26
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For enzyme biofuel cells, the active center of most enzymes is deeply buried inside the enzyme, and the thickness of the protein shell of the enzyme molecule alone is enough to shield the direct transfer process of the electron active center to the electrode. electron transfer
Researchers at home and abroad have conducted unremitting research on enzyme carriers and electron transfer mediators, but the carrier and mediator are not easy to quantify and fall off, which limits the power, stability and reproducibility of the battery.

Method used

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  • A biofuel cell anode and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of Example 1 Biofuel Cell Anode ZSM-55 / Nafion / Th / BSA / GOD:

[0033] (1) Preparation of amino-functionalized molecular sieve: carry out amino-functionalized ZSM-5 zeolite molecular sieve (produced by Zibo Qichuang Chemical Technology Development Co., Ltd.), the steps are as follows: ZSM-5 zeolite molecular sieve, 3-aminopropyl-3- Ethoxysilane (3-Aminopropyl-triethoxysilane, APTES) and toluene were mixed according to the volume ratio of 1:2:20, stirred and refluxed at 110°C for 24 hours, then filtered, washed with ethanol and distilled water to remove excess silane The residue was then vacuum-dried at 100° C. to obtain an amino-functionalized molecular sieve, which was used for future use.

[0034] (2) Preparation of nanomaterial layer: Disperse 5 mg of amino-functionalized ZSM-5 zeolite molecular sieve in 5 mL of distilled water, conduct continuous ultrasonication (ultrasonic power of 50 W, frequency of 50 Hz) at room temperature for 3 min, and take 500 μL of ...

Embodiment 2

[0038] Preparation of Example 2 Biofuel Cell Anode ZSM-57 / Nafion / Th / BSA / GOD:

[0039] (1) The method for preparing amino functionalized ZSM-5 zeolite molecular sieve is the same as step (1) of Example 1.

[0040] (2) Preparation of nanomaterial layer: Disperse 5 mg of amino-functionalized molecular sieves in 5 mL of distilled water, conduct continuous ultrasound at room temperature (ultrasonic power: 50 W, frequency: 50 Hz) for 3 min, take 500 μL of the dispersion in a test tube, and pour into the test tube Add 500 μL of Nafion solution (concentration: 5% by mass, DuPont), and then sonicate for 3 minutes under the same conditions, absorb 7 μL of ultrasonically treated molecular sieve suspension and coat it on a glassy carbon substrate electrode of 0.07 square centimeters, and dry it at room temperature. A nanomaterial layer is formed.

[0041] (3) Preparation of mediator layer: the method is the same as step (1) of Example 1.

[0042] (4) Preparation of the enzyme layer: the...

Embodiment 3

[0044] Example 3 Preparation of biofuel cell anode ZSM-551 / Nafion / Th / BSA / GOD:

[0045] (1) Preparation of amino-functionalized ZSM-5 zeolite molecular sieve, the method is the same as step (1) of Example 1.

[0046] (2) Preparation of nanomaterial layer: Disperse 2.5 mg of amino-functionalized molecular sieves in 5 mL of distilled water, conduct continuous ultrasonication (ultrasonic power of 50 W, frequency of 50 Hz) at room temperature for 3 minutes, take 500 μL of the dispersion in a test tube, and then Add 500 μL of Nafion solution (concentration: 5% by mass, DuPont) to the test tube, and then sonicate for 3 minutes under the same conditions, draw 5 μL of the sonicated molecular sieve suspension and coat it on a 0.07 square centimeter glassy carbon substrate electrode, room temperature and dry to form a nanomaterial layer.

[0047] (3) Preparation of mediator layer: the method is the same as step (1) of Example 1.

[0048] (4) Preparation of the enzyme layer: the prepara...

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Abstract

The invention discloses a biological fuel cell anode, a preparation method of the biological fuel cell anode and application of the biological fuel cell anode, and belongs to the biotechnology field of enzyme biological fuel cell. The biological fuel cell anode uses a substrate electrode as a center, and sequentially comprises a nanometer material layer, a mediator layer and an enzyme layer from inside to outside. The preparation method comprises evenly daubing a mixed solution which includes amino functional molecular sieve dispersion liquid and a Nafion solution on the substrate electrode which has been through purification treatment, drying the substrate electrode, adsorbing thionine on the substrate electrode through impregnation method, loading enzyme on a molecular sieve, and fixing the enzyme through cross-linking action of glutaraldehyde. Due to the fact that the molecular sieve which is low in price and is provided with a mesoporous structure is used as a carrier of mediator thionine and enzyme catalyst, the biological fuel cell anode has the advantages of being low in cost, large in loading quantity of catalyst and the mediator, good in catalytic performance and the like, and the biological fuel cell anode is low in cost and high in performance.

Description

technical field [0001] The invention belongs to the technical field of biofuel cells, and in particular relates to a biofuel cell anode, a preparation method and application thereof. Background technique [0002] Biofuel cells are devices that use enzymes or microbial tissues as catalysts to convert the chemical energy of fuel into electrical energy. According to different types of catalysts, they can be divided into enzyme biofuel cells and microbial fuel cells. Most biofuel cells only use biocatalysts in the anode, and the cathode part is no different from a general fuel cell because biofuel cells also use oxygen in the air as an oxidant. Therefore, most of the research work in the field of biofuel cells is aimed at the anode area of ​​the battery. In addition to the advantages of high energy conversion rate and no pollution in theory, biofuel cells also have the following advantages: 1) Wide range of raw materials, can use a variety of organic and inorganic substances th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/86H01M4/88
CPCY02E60/50
Inventor 朴金花张秀花吕稳姜建国
Owner SOUTH CHINA UNIV OF TECH