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Catalyst for air electrode, air electrode and preparation methods

An air electrode and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, battery electrodes, etc., can solve the problems of high cost, complicated preparation process, and difficulty in commercialization, and achieve low production cost and strong catalytic activity , the effect of performance improvement

Inactive Publication Date: 2012-01-04
BEIJING CHANGLI UNION ENERGY TECH CO
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Problems solved by technology

And noble metal catalysts are expensive and difficult to commercialize; perovskite-type composite oxide catalysts are difficult to control heat treatment conditions and affect the perovskite crystal form; metal macrocyclic compounds, especially metal (Fe, Co) chelates such as phthalocyanine, Porphyrin is also considered to have electrocatalytic activity for oxygen reduction, but its preparation process is relatively complicated, the cost is high and it is not suitable for mass production

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  • Catalyst for air electrode, air electrode and preparation methods
  • Catalyst for air electrode, air electrode and preparation methods
  • Catalyst for air electrode, air electrode and preparation methods

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Embodiment Construction

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0037] An embodiment of the present invention provides a catalyst for an air electrode. The catalyst uses manganese salts and silver salts as raw materials and carbon materials as carriers, and its chemical expression is:

[0038] (MnO 2 +Ag) / C;

[0039] Wherein, the content ratio of each component is:

[0040] Manganese dioxide MnO 2 : silver Ag: carbon C = 2:1:17.

[0041] In the specific implementation process, the above-mentioned manganese ...

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Abstract

The embodiment of the invention discloses a catalyst for an air electrode, an air electrode and preparation methods for the catalyst and the air electrode. The catalyst for the air electrode takes a manganese salt and silver salt as raw materials, takes a carbon material as a carrier and has a chemical expression of (MnO2+Ag) / C, wherein the content ratio of each component is MnO2:Ag:C of 2:1:17. The air electrode is obtained by pressing a catalytic film made from the catalyst, a waterproof breathable film and a grid in a set arrangement way. The catalyst for the air electrode has high catalytic activity, so that the performance of the prepared air electrode is greatly improved; and the preparation methods have simple processes, and are relatively lower in production cost.

Description

technical field [0001] The invention relates to the technical field of metal-air batteries, in particular to a catalyst for an air electrode, an air electrode and a preparation method thereof. Background technique [0002] At present, metal-air batteries use metals with negative electrode potentials such as magnesium, aluminum, zinc, etc. . Metal-air batteries have the advantages of large capacity, high specific energy, stable working voltage, low price, and environmental friendliness, and are a chemical power source with huge market prospects. [0003] The air electrode is a kind of gas diffusion electrode, which is generally composed of a catalytic layer, a waterproof layer, and a current collecting net. One side is in contact with the electrolyte, and the other side is in contact with oxygen in the air, forming a three-phase stable state on the surface of the catalyst. During the discharge process of the battery, the air electrode is used as the cathode, oxygen diffuses...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88H01M4/86B01J23/68
CPCY02E60/50
Inventor 杨维谦
Owner BEIJING CHANGLI UNION ENERGY TECH CO
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