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Direct methanol fuel cell solid-glue mobile phase and method for the production thereof

A methanol fuel cell and gel flow technology, which is applied in the field of mobile phase to simplify the cell structure, solve methanol leakage, and improve performance.

Inactive Publication Date: 2009-03-25
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to provide a kind of direct methanol fuel cell solid-gel mobile phase and preparation method that can effectively solve the permeation problem of methanol on the proton exchange membrane and improve the performance of direct methanol fuel cell

Method used

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  • Direct methanol fuel cell solid-glue mobile phase and method for the production thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Select high specific surface area and porous material as solid phase 1;

[0028] (2) Gel mobile phases 2 and 3 are set on both sides of the solid phase 1. When preparing the gel mobile phase, metal organic compounds or metal salts are used as precursors, and methanol in the mobile phase is used as a dispersion medium, and sulfuric acid and water are added. The sol is formed through hydrolysis and polycondensation reaction, and further doped with heteroacid, polymer and / or metal powder to make the gel mobile phase.

[0029] The solid phase is a high specific surface and porous material that absorbs sulfuric acid and methanol electrolyte solution. The high specific surface and porous material is montmorillonite (or diatomite or white carbon black or activated carbon).

[0030] The weight proportion of each raw material in the above-mentioned gel mobile phase preparation is:

[0031] CH 3 OH 20%

[0032] h 2 SO 4 30%

[0033] h 2 O 20% ...

Embodiment 2

[0039] The weight ratio of each raw material in the gel mobile phase preparation is:

[0040] CH 3 OH 40%

[0041] h 2 SO 4 20%

[0042] h 2 O 20%

[0043] Heteroacids 5%

[0044] Conductive polymer 3%

[0045] Metal organic compounds or metal salts 12%. The conductive polymer is polyaniline (or polypyrrole).

[0046] All the other are with embodiment 1.

Embodiment 3

[0048] The weight ratio of each raw material in the gel mobile phase preparation is:

[0049] CH 3 OH 50%

[0050] h 2 SO 4 10%

[0051] h 2 O 10%

[0052] Heteroacids 10%

[0053] Conductive polymer 5%

[0054] Metal organic compound or metal salt 15%.

[0055] All the other are with embodiment 2.

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Abstract

The present invention discloses a direct methanol material fuel cell solid-glue mobile phase and the preparing methods. The product comprises solidoid, the two laterals of which are condensed glue mobile phase. The preparing methods comprise selecting high ratio surface and porous material as the solidoid. The methanol inside the mobile phase is a dispersed media, which forms a colloidal sol by adding sulphuric acid and water through hydrolyzing and condensation polymerization reactions. The dispersed media is further mixed with heteroacid, polymer and / or metallic power to form the condensed glue mobile phase. The present invention basically solves the leakage problem of the methanol, reduces the toxic influence on the direct methanol fuel cell cathode and anode catalysts and also can improve the performance of the direct methanol fuel cell, In addition, simplifies the cell structure and promotes the marketing progress of the direct methanol fuel cell.

Description

Technical field: [0001] The invention relates to a mobile phase (flux phase) of a direct methanol fuel cell. Background technique: [0002] Direct Methanol Fuel Cell (DMFC) has the advantages of low energy consumption, high energy density, abundant sources of methanol, low price, simple system, convenient operation, low noise, etc. Promising chemical power sources have attracted widespread attention. At present, the development of direct methanol fuel cells faces two key problems: one is that the solid electrolyte membrane widely used in direct methanol fuel cells is the Nafion membrane originally designed for hydrogen-oxygen proton exchange membrane fuel cells, which has obvious methanol leakage ( crossover) phenomenon, methanol directly penetrates the Nafion membrane and is lost, resulting in a large loss of methanol fuel and a decrease in the power density of the DMFC. At the same time, methanol seeps into the cathode and reacts on the cathode, resulting in poisoning of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/02H01M8/10H01M8/1011H01M8/1018H01M8/1069
CPCY02E60/523Y02E60/50Y02P70/50
Inventor 鞠剑峰黄明宇吴东辉华平倪红军苏广均
Owner NANTONG UNIVERSITY