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Polydopamine-coated carbon nanotube enhancement ascorbic acid/glucose fuel cell

A technology of polydopamine and ascorbic acid, applied in fuel cells, battery electrodes, circuits, etc., can solve the problems of carbon nanotube electrodes that have not yet been functionalized by dopamine electropolymerization membrane, and achieve the effect of strong binding force and high catalytic activity

Active Publication Date: 2018-03-06
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there is no report on dopamine electropolymerization membrane functionalized carbon nanotube electrode and its use in the catalytic oxidation of glucose

Method used

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  • Polydopamine-coated carbon nanotube enhancement ascorbic acid/glucose fuel cell
  • Polydopamine-coated carbon nanotube enhancement ascorbic acid/glucose fuel cell
  • Polydopamine-coated carbon nanotube enhancement ascorbic acid/glucose fuel cell

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Experimental program
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Effect test

Embodiment 1

[0027] The preparation of embodiment 1 polydopamine / carbon nanotube electrode

[0028] The polydopamine / carbon nanotube electrode in this embodiment is prepared by the following method:

[0029] (1) Preparation of SWCNTs / C electrode: Dissolve single-walled carbon nanotubes (SWCNTs) in double-distilled water, add sodium dodecyl sulfate (SDS), and disperse ultrasonically until a uniform black carbon nanotube dispersion is obtained; Dropping the carbon nanotube dispersion on the surface of the dry graphite electrode, drying in an oven, and evaporating the solvent to obtain the SWCNTs / C electrode;

[0030] (2) Preparation of PDA / SWCNTs / C electrodes: using differential pulse voltammetry electropolymerization technology, such as figure 1 As shown, in the three-electrode system, the working electrode is SWCNTS / C electrode, the counter electrode is titanium sheet, the reference electrode is saturated calomel electrode, 0.1mol / L sodium chloride solution is added to the anode cell as e...

Embodiment 2

[0031] The characterization of embodiment 2 polydopamine / carbon nanotube electrode

[0032] The SEM image of the polydopamine / carbon nanotube electrode made in embodiment 1 is as follows figure 2 As shown, SWCNTs@PDA presents an ordered structure on the electrode.

Embodiment 3

[0033] Example 3 Construction of Polydopamine-coated Carbon Nanotubes Enhanced Ascorbic Acid / Glucose Fuel Cell

[0034] (1) The construction of the fuel cell in this embodiment, the specific operation steps are as follows:

[0035] With the polydopamine / carbon nanotube electrode that embodiment 1 makes as the electrocatalyst of cathode and anode, cathode continues to pass oxygen to keep under saturated oxygen atmosphere (oxidizing agent), and adds 0.1mol / L sodium chloride and 0.01mol / L L tris; add 0.1mol / L sodium chloride (electrolyte solution), 0.01mol / L tris (pH=7.20; buffer solution), 0.1mol / L glucose (fuel) in the anode pool ) and 0.01mol / L ascorbic acid (fuel and glucose oxidation mediator), are connected with saturated potassium chloride salt bridge between two ponds; Construct and form fuel cell, promptly polydopamine coating carbon nanotube of the present invention strengthens ascorbic acid / glucose fuel Battery.

[0036] (2) To test the performance of the fuel cell c...

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Abstract

The invention belongs to the technical field of a fuel cell, and discloses a polydopamine-coated carbon nanotube enhancement ascorbic acid / glucose fuel cell. Dopamine is subjected to electrochemical polymerization on a carbon nanotube electrode by adopting a continuous differentiating pulse voltammetry, and an ordered polydopamine / carbon nanotube electrode is prepared and obtained; and next, by taking the polydopamine / carbon nanotubes as an electric catalyst of a negative electrode and a positive electrode, electrocatalytic oxidation of a low-cost non-enzymatic catalyst in a neutral environment on ascorbic acid and glucose is realized, and the high-performance ascorbic acid / glucose fuel cell is researched; and the established fuel cell has the advantages of low cost, environment protectionand safety, high biological compatibility, high power density and the like.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, in particular to a polydopamine-coated carbon nanotube reinforced ascorbic acid / glucose fuel cell. Background technique [0002] Glucose is an ideal renewable fuel, theoretically, its energy density reaches 4.43kWh kg –1 , however, the oxidation ability of glucose is weak, and it is often necessary to use a certain catalyst to catalyze its oxidation. The substances currently used for the catalytic oxidation of glucose mainly include enzymes and non-enzyme catalysts. Enzyme-catalyzed oxidation has the advantages of high selectivity and mild reaction conditions, but the enzyme catalyst is easily deactivated and the production cost is high. Non-enzymatic catalysts mainly include metals, metal oxides and metal complexes, but they are expensive and easily poisoned, so it is difficult to achieve large-scale commercial applications. So our goal is to find a cheap and efficient electrode to realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/90H01M4/88H01M8/22
CPCH01M4/8853H01M4/9083H01M8/225Y02E60/50Y02P70/50
Inventor 李晓丹李红
Owner SOUTH CHINA NORMAL UNIVERSITY
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