Electrode preparation method and system based on mullite fiber catalytic material

Abstract

The invention relates to an electrode preparation method and system based on a mullite fiber catalytic material. Absolute ethyl alcohol, PVP, samarium nitrate, pure water and manganese acetate which are weighed according to a first preset ratio are sequentially placed in a first beaker; according to preset time, the substances in the first beaker are stirred to obtain a precursor solution; a firstelectrode and a plastic injector loaded with the precursor solution are used for generating initial fibers, and the initial fibers are sprayed onto aluminum paper; the aluminum paper which collects the initial fibers is dried according to preset temperature to generate fiber film; the fiber film which is peeled off the aluminium paper is baked to generate SmMn2O5 fibers; the SmMn2O5 fibers, conductive carbon, a nafion solution and absolute ethyl alcohol are used for preparing dispersion liquid; the dispersion liquid is used for preparing catalytic film on a second electrode to obtain an electrode which contains a catalytic material mullite fibers. Therefore, the electrode in which the SmMn2O5 fibers are used as the catalytic material can be produced, the SmMn2O5 fibers are low in preparation cost, good in corrosion resistance and high in stability, the cost of fuel cells can be reduced, and the practicability is improved.

Description

technical field [0001] The invention relates to the technical field of material synthesis, in particular to an electrode preparation method and system based on mullite fiber catalytic material. Background technique [0002] The energy crisis and environmental problems caused by excessive burning of coal, oil and natural gas in modern industry are becoming more and more urgent. How to deal with such crises and problems has become a top priority. As an energy storage and output device with high power generation efficiency, low environmental pollution, and high specific energy, fuel cells have great research value. [0003] In fuel cells, the cathode is the center of the oxygen reaction, so the slow oxygen reduction reaction of the cathode becomes a key factor restricting its performance. A suitable cathode catalyst can effectively improve the charge-discharge performance and reversibility of the fuel cell, thereby improving the cathode performance of the battery. In the prio...

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Problems solved by technology

[0004] In view of this, the purpose of the present invention is to provide a kind of electrode preparation method and system based on mullite fiber catalytic material, to solve the problem that using platinum (Pt) as the representative noble metal as catalytic material in the prior art will increase the efficiency of fuel cells. Cost, and the widely used platinum (Pt) catalytic material of carbon support often decreases in activity due to surface passivation and corrosion, and the loss of platinum (Pt) catalytic material will lead to severe performance degradation, thus affecting the use effect of fuel cells

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