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A kind of preparation method of biocathode based on silicon rubber

A biocathode and silicone rubber technology, applied in battery electrodes, electrical components, circuits, etc., can solve the problems of power supply, energy loss, and weak current that cannot be used as implantable medical equipment, and achieve direct electrochemistry without cracks , the effect of easy operation

Active Publication Date: 2015-11-11
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For enzymatic biofuel cells that can be implanted in the human body, its practical application will face more difficulties
Heller's group has done a lot of research work on micro-biofuel cells, but they can't be used as a power source for implantable medical devices because of their weak current and short life, and they lose about 6% of their energy per day.
In addition, the actual human body fluids are more complex than the simulated body fluids used in research, therefore, the application of enzyme-based biofuel cells in implantable medical devices needs further research

Method used

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  • A kind of preparation method of biocathode based on silicon rubber
  • A kind of preparation method of biocathode based on silicon rubber
  • A kind of preparation method of biocathode based on silicon rubber

Examples

Experimental program
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Effect test

Embodiment 1

[0025] The first step: modification method of carbon nanotubes

[0026] Put 5 g of multi-walled carbon nanotubes (inner diameter 2-5 nm, outer diameter 40-50 nm) into a round-bottomed flask filled with 200 ml of concentrated nitric acid with a concentration of 65% to 68%, and sonicate for 30 min at 20°C. Then connect the condensing device, heat the mixture of multi-walled carbon nanotubes and concentrated nitric acid to 100°C, and react at 100°C for 5h. After the reaction, the mixture of multi-walled carbon nanotubes and concentrated nitric acid was centrifuged and washed with deionized water until neutral. Finally, the multi-walled carbon nanotubes obtained after the treatment were placed in a vacuum oven and dried at 40°C for 24 h.

[0027] The second step: preparation method and characterization of multi-walled carbon nanotube-chitosan composite cathode

[0028] The configuration of the acetic acid solution of chitosan: join 1g chitosan in 100ml dilute acetic acid (1%, v / ...

Embodiment 2

[0039] The first step: modification method of carbon nanotubes

[0040] Same as the operation process of the first step in embodiment 1.

[0041] The second step: preparation method and characterization of multi-walled carbon nanotube-cellulose composite cathode

[0042] Preparation of the ionic liquid solution of cellulose: Dissolve the cellulose in the ionic liquid (1-ethyl-3-methylimidazolium acetate) (cellulose content 5%wt) under ultrasonic and heating conditions, and set aside.

[0043] Weigh 1.0 g of multi-walled carbon nanotubes obtained in step 1 and 200 g of cellulose ionic liquid in an agate mortar, and grind the mixture in a dry environment until the mixture becomes a slurry to obtain an enzyme-type bioelectrode material, which is sealed and stored. Wherein, the mass ratio of multi-walled carbon nanotubes and cellulose is 1:10.

[0044] The above-mentioned enzyme-type bioelectrode material is coated on the surface of silicone rubber through a circular mold to obt...

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Abstract

The invention discloses a preparation method of a biological cathode taking silicone rubber as a substrate, relates to a biological fuel cell and provides the preparation method of the biological cathode which has flexible bending performance, no toxicity and good biological compatibility as well as takes the silicone rubber as the substrate. The method comprises the following steps of: (1) performing ultrasound pretreatment on a carbon material by using nitric acid; (2) heating the treated carbon material by using the nitric acid; (3) mixing the carbon material obtained by the step (2) with a high molecular compound solution, thereby obtaining a pasty electrode material; (4) coating the pasty electrode material obtained by the step (3) on a rubber surface, and connecting with a corresponding conductive wire after drying, thereby obtaining the biological cathode by taking the silicone rubber as the substrate. The biological cathode is an enzyme-type biological cathode. The method is simple, can be operated simply and conveniently and requires short time. In addition, the price of the electrode material is low. Thus, the preparation cost of the enzyme-type biological cathode is lowered greatly.

Description

technical field [0001] The invention relates to a biological fuel cell, in particular to a method for preparing a biological cathode based on silicon rubber. Background technique [0002] Enzyme biofuel cell is a kind of green environmental protection device which uses enzyme as catalyst to directly convert chemical energy in organic matter into electrical energy. In enzyme-type fuel cells, enzymes can be dissolved in solution together with a mediator, or they can be immobilized on electrodes. The latter has a wider range of applications due to the advantages of high catalytic efficiency and less environmental constraints. [0003] With the development of society and the continuous advancement of medical technology, human health is increasingly dependent on various implantable medical devices. Implantable medical devices fall into two categories: passive and active. Such as artificial blood vessels, artificial joints and orthopedic instruments that do not require energy s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/88
CPCY02E60/50
Inventor 吴雪娥陈梦莹陈晓东
Owner XIAMEN UNIV
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