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Waterproof gas permeable layer for metal fuel cells and preparation method thereof

A metal fuel cell, waterproof and breathable layer technology, applied in applications, household appliances, ceramic products, etc., can solve the problems of complex preparation process of waterproof and breathable layer, high production cost, difficult to control, etc., to achieve good industrial application prospects, thermal stability. The effect of strong performance and good chemical stability

Inactive Publication Date: 2018-09-18
YUNNAN ALUMINUM
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  • Abstract
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Problems solved by technology

For this reason, an object of the present invention is to propose a metal fuel cell waterproof gas-permeable layer and a preparation method thereof, which can effectively solve the existing problems of complex and difficult-to-control, high production costs for the preparation of the existing waterproof gas-permeable layer, and the method adopts functional Ceramic materials are used as the basic aggregate, and the prepared metal fuel cell waterproof and breathable layer has good chemical stability, mechanical resistance and thermal stability, and has good industrial application prospects

Method used

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  • Waterproof gas permeable layer for metal fuel cells and preparation method thereof

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preparation example Construction

[0024] The method for preparing a waterproof and gas-permeable layer for metal fuel cells in the above embodiments of the present invention uses functional ceramic materials as aggregates, and adds pore-forming agents and binders for wet mixing, aging, and molding to obtain green bodies, and further The green body is subjected to roasting treatment, impregnation treatment and heat treatment to obtain the waterproof and air-permeable layer for the metal fuel cell. The waterproof and gas-permeable layer for the metal fuel cell prepared by the method has good chemical stability, mechanical resistance and thermal stability, and has good industrial application prospects.

[0025] Refer below figure 1 The method for preparing the waterproof and gas-permeable layer for metal fuel cells embodied in the present invention is described in detail.

[0026] Ingredients mix

[0027] According to a specific embodiment of the present invention, aggregate, pore forming agent, binder and wate...

Embodiment

[0054] (1) A preparation method of a metal fuel cell waterproof breathable layer, microporous ceramic preparation: take ZrO, Al 2 o 3 , ZnO, SiO 2 Mix the aggregates with a mass ratio of 3:1:0.5:0.5, and add the pore-forming agent starch and CaCO with a mass ratio of 1:1. 3 , a binder with a mass ratio of 2:1 CMC:AlPO 4 Stir in a high-speed mixer for 10 hours; then add distilled water and stir in a high-speed mixer for 5 hours; place the wet mixture at 25 for 6 hours, dry it in a drying oven at 60°C for 10 hours, and grind it mechanically for 15 hours; hold the pressure for 6 minutes under a pressure of 50 MPa to obtain Green body; finally, the green body is sintered in an air atmosphere at a heating rate of 10°C / min to 1750°C for 10 hours at normal pressure, and at a cooling rate of 40°C / min to room temperature to obtain microporous ceramics.

[0055] (2) Microporous ceramic surface treatment:

[0056] The microporous ceramics were treated in 20% organic solution of polyd...

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Abstract

The invention provides a waterproof gas permeable layer for metal fuel cells and a preparation method thereof. The preparation method comprises the following steps: (1) mixing an aggregate, a pore former, a binder and water to obtain a material mixture, with the aggregate being a ceramic material. (2) aging the mixture to obtain an aged material; (3) shaping the aged material to obtain a green body; (4) calcining the green body to obtain microporous ceramic; (5) soaking the microporous ceramic with a polydimethylsilane organic solution and drying; and (6) subjecting the soaked microporous ceramic to heat treatment to obtain the waterproof gas permeable layer. The method has the advantages of a simple process, easy operation, a low cost, and the like. The prepared waterproof gas permeable layer has good chemical stability, thermal stability and mechanical resistance, and has a good industrial application prospect.

Description

technical field [0001] The invention belongs to the field of batteries, in particular, the invention relates to a waterproof breathable layer for a metal fuel cell and a preparation method thereof. Background technique [0002] At present, the air-permeable and waterproof layers of the air electrodes of air batteries such as aluminum, magnesium, and zinc are basically made of hydrophobic carbon materials mixed with PTFE in a certain proportion, and then repeatedly pressed on a roller press to obtain a waterproof and air-permeable layer. The waterproof and breathable layer prepared by this method has the disadvantages of complex process, difficult control of process parameters, high production cost and low selectivity to gases. Therefore, the current process for preparing the waterproof and gas-permeable layer for metal fuel cells needs to be further improved. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the relate...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B35/48C04B35/63C04B35/636C04B41/84
CPCC04B35/48C04B35/6309C04B35/6365C04B38/0645C04B41/4955C04B41/84C04B2235/3217C04B2235/3284C04B2235/3418C04B2235/6562C04B2235/6565C04B2235/6567C04B41/4535C04B41/0072
Inventor 施学金汪云华周燕张战胜李如飞崔涛和晓才祁云一袁野杨孟昌
Owner YUNNAN ALUMINUM
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