Micro membrane-free fuel cell with carbon-nanotube three-dimensional electrodes and preparation method thereof

A technology of carbon nanotubes and three-dimensional electrodes, applied in battery electrodes, circuits, electrical components, etc., can solve the problems of low power density and low fuel utilization rate, and achieve the effect of increasing contact area, high power density and fuel utilization rate

Inactive Publication Date: 2014-03-26
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low fuel utilization rate and low power density of planar electrode cells in the prior art...

Method used

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  • Micro membrane-free fuel cell with carbon-nanotube three-dimensional electrodes and preparation method thereof
  • Micro membrane-free fuel cell with carbon-nanotube three-dimensional electrodes and preparation method thereof
  • Micro membrane-free fuel cell with carbon-nanotube three-dimensional electrodes and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A micro-filmless fuel cell containing a carbon nanotube three-dimensional electrode is prepared by the following method, specifically comprising the following steps:

[0030] (1) Prepare metal electrode leads on the substrate:

[0031] 1.1 Prepare a layer of chromium metal film on the cleaned glass sheet (substrate) by magnetron sputtering method. The chromium metal film is used as the transition layer of the metal electrode lead. The process parameters of the magnetron sputtering method are: cavity Pressure 0.6Pa, sputtering power 100W, argon flow rate 12cm 2 / min, sputtering time 2min; adopt DC sputtering method to prepare a layer of gold metal film on the chromium metal film, the gold metal film is used as the conductive layer of the metal electrode lead, the process parameters of DC sputtering are: cavity pressure 8Pa , working current 8mA, sputtering time 90s; complete the preparation of chromium-gold double-layer metal film;

[0032] 1.2 Use a coating machine to...

Embodiment 2

[0043] A micro-filmless fuel cell containing a carbon nanotube three-dimensional electrode is prepared by the following method, specifically comprising the following steps:

[0044] (1) Prepare metal electrode leads on the substrate:

[0045] 1.1 Prepare a layer of chromium metal film on the cleaned silicon wafer (substrate) by magnetron sputtering method. The process parameters of magnetron sputtering method are: chamber pressure 0.5Pa, sputtering power 80W, argon flow rate 10cm 2 / min, sputtering time 3min; adopt DC secondary sputtering method to prepare a layer of gold metal film on the chromium metal film, this gold metal film is used as the conductive layer of metal electrode lead wire, the process parameter of DC secondary sputtering is: The cavity pressure is 9Pa, the working current is 10mA, and the sputtering time is 80s; the preparation of the chromium-gold double-layer metal film is completed;

[0046] 1.2 Use a coating machine to coat a layer of photoresist on the...

Embodiment 3

[0057] A micro-filmless fuel cell containing a carbon nanotube three-dimensional electrode is prepared by the following method, specifically comprising the following steps:

[0058] (1) Preparing metal electrode leads on the substrate: the same method as in Example 2 for preparing metal electrode leads.

[0059] (2) Printing catalyst paste for catalyzing carbon nanotube growth on Cr / Au metal leads:

[0060] 1.1 According to the position requirements of the carbon nanotube stereoscopic electrode and the guide screen (see figure 2 ), use PDMS (polydimethylsiloxane) as material to prepare PDMS stamp;

[0061] 1.2 A catalyst slurry composed of iron metal salt and polyethylene glycol was printed on the Cr / Au metal wire by using a PDMS transfer stamp, and the role of the catalyst slurry was to catalyze the growth of carbon nanotubes.

[0062] (3) On the above-mentioned Cr / Au metal leads printed with catalyst paste, carbon nanotube stereoscopic electrodes and guide mesh plates wer...

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Abstract

The invention belongs to the technical field of fuel cells, and particularly relates to a micro membrane-free fuel cell with carbon-nanotube three-dimensional electrodes and a preparation method thereof. A metal electrode lead is arranged on the surface of a substrate material of the micro membrane-free fuel cell, and a plurality of carbon-nanotube three-dimensional electrodes and a plurality of carbon-nanotube diversion screen plates are grown on the metal electrode lead in a positioned mode. Catalysts are loaded on the carbon-nanotube three-dimensional electrodes. The substrate material and a cover slip with a groove are bonded and packaged to obtain the micro membrane-free fuel cell. The micro membrane-free fuel cell utilizes the carbon-nanotube three-dimensional electrodes loaded with the catalysts so as to increase the contact area of a working substance and the electrodes, the perturbation action of the three-dimensional electrodes on laminar substances strengthens the local diffusion of substances, and reactants near an electrode consumption boundary layer can obtain sustained and effective supplement, so that the cell has a high power density.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a micro-filmless fuel cell containing carbon nanotube stereo electrodes and a preparation method thereof. Background technique [0002] With the development and popularization of mobile and portable devices, the previous energy devices cannot meet the requirements of human beings, and the demand for energy devices with high energy density and small size is imminent. Micro-membrane-free fuel cells have a series of advantages such as simple structure, high efficiency, cleanliness, and practicality. At the same time, because there is no proton exchange membrane, the manufacturing process is simple and the cost is low. [0003] In a fuel cell, all oxidation-reduction reactions are based on the surface of the planar electrode. Since the reaction is almost only carried out near the electrode, the contact area between the electrode and the working substance is small. The...

Claims

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Application Information

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IPC IPC(8): H01M4/86H01M4/88
CPCY02E60/50H01M4/8647H01M4/8825H01M4/9083H01M4/921
Inventor 王升高朱金龙皮晓强张维孔垂雄许结林王传新汪建华
Owner WUHAN INSTITUTE OF TECHNOLOGY
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