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Metal/air battery

An air battery, metal technology, applied in hybrid batteries, battery pack components, battery isolation from its environment, etc., can solve the problems of difficult separation of magnesium hydroxide, affecting ionic conductivity, affecting battery performance, etc., to enhance service life, Does not increase the volume, the effect of simple structure

Active Publication Date: 2015-06-17
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still two main problems in this method: (1) The particle size of the magnesium hydroxide product of the magnesium / air battery is very small (tens of nanometers to hundreds of microns), and it is difficult to effectively separate magnesium hydroxide by ordinary hydrophilic membranes.
If you choose a dense membrane, it will affect the ionic conductivity, which in turn will affect the performance of the battery
(2) After the discharge of the magnesium / air battery is completed, the electrolyte has been exhausted, the product is muddy, and it is tightly filled with the inner cavity of the battery, and it is difficult to take the product out of the inner cavity of the battery

Method used

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Embodiment 1

[0036] Magnesium / air battery structure such as Figure 1-3 shown.

[0037] The magnesium / air battery includes a battery case 3, a magnesium alloy anode and an air cathode 4. The battery case 3 is a hollow container, and support rods are respectively arranged on the left and right sides of the magnesium alloy anode, and the two support rods are used as a product The separation frame, the left and right sides of the magnesium alloy anode are fixedly connected to the support rods respectively and placed in a product separation bag, which is placed in the battery casing.

[0038] A fixing rod is arranged between the two supporting rods, and two ends of the fixing rod are respectively connected with the supporting rods.

[0039] The upper end of the battery case is provided with an opening through which the product separation bag is put into or taken out from the battery case.

[0040] Two support rods are vertically arranged in the battery casing, and the two support rods form a...

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Abstract

A metal-air battery, comprising a battery housing (3), a metal anode (7), and an air cathode (4), the battery housing (3) being a hollow container; both the left and right sides of the metal anode (7) being provided with a support rod, the two support rods serving as a product separator (8); the left and right sides of the metal anode (7) being fixedly connected to the support rods, then being arranged in a product separation bag, which is arranged in the battery housing (3). In comparison with the prior art, the hydrophilic treatment used by the described metal-air battery separates the product more thoroughly, while the use of the film also does not affect ion conduction capability and does not affect battery discharge performance; the structure of the metal-air battery product separator is simple, it is simple to operate, and hardly increases the volume of the battery; at the same time, due to the increased efficiency of product separation, the service life of the battery is greatly improved.

Description

technical field [0001] The invention relates to a metal / air battery, in particular to a metal / air battery with a product separation device. Background technique [0002] Metal / air batteries have the advantages of high theoretical specific energy, environmental protection, etc., and have broad application prospects in the field of mobile power sources such as emergency reserve power and field lighting power. [0003] Magnesium / air battery is a typical metal / air battery. It is an electrochemical reaction device that uses magnesium or magnesium alloy as anode fuel, oxygen in the air as oxidant, and neutral salt water as electrolyte solution. Magnesium / air batteries have the characteristics of high energy density (theoretical energy density is as high as 3910Wh / kg), no pollution of reactants and products, and safe use. Magnesium / air battery electrode reaction and battery overall reaction are respectively: [0004] Anode electrode reaction: M g +2OH - m g (OH) 2 +2e - -2.6...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M12/06
CPCH01M12/06H01M12/065H01M50/24Y02E60/10
Inventor 孙公权王二东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI