Air electride

Abstract

An air electrode is composed of a catalytic activity layer, a slip ring, a stretched hydrophobic air pervious layer and leakage proof sealing layer vertical to the direction of the air pervious layerby applying roll to process it with simple structure, good mechanical strength, controllable air flow pass to reduce the loss of electrolyte and influence of Co2 to further increase metal-air batterylife time.

Description

Technical field:

[0001] The invention belongs to the technical field of electrochemistry, and in particular relates to an air electrode applied in a metal-air battery. Background technique:

[0002] Metal-air batteries use metals with negative electrode potentials such as magnesium, aluminum, zinc, cadmium, iron, etc. as the negative electrode, and oxygen or pure oxygen in the air as the active material of the positive electrode. electrolyte solution. If lithium, sodium, calcium, etc. with more negative electrode potentials are used as negative electrodes, only non-aqueous organic electrolytes or inorganic electrolyte solutions can be used.

[0003] The main features of the metal-air battery are: First, because the active material used in the air electrode is the inexhaustible oxygen in the air, the specific energy is high. The theoretical specific energy is generally above 1000wh / kg, and the actual specific energy is 100wh. More than / kg, it is a high-energy chemical powe...

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