An aluminum-air battery system and its working method

A technology of aluminum-air battery and working method, which is applied in the direction of fuel cell, fuel cell additive, fuel cell-type half-cell and primary battery-type half-cell, etc., and can solve the problem of difficult removal of reaction products and large consumption of electrolyte, etc. problem, to achieve the effect of increasing the specific energy

Active Publication Date: 2020-03-10
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the problem that the reaction product in the alkaline aluminum-air battery is difficult to remove and the consumption of the electrolyte is large, the invention proposes an aluminum-air battery system for removing the reaction product in the electrolyte

Method used

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  • An aluminum-air battery system and its working method

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Embodiment 1

[0035] An aluminum-air battery system such as figure 1As shown, it includes an aluminum-air battery pack 9, two electrolyte storage chambers (1-1 and 1-2) and a product separation chamber 10; the battery pack includes 23 single cells, and the thickness of the aluminum anode plate is 15mm; the The two electrolyte storage chambers are respectively equipped with 50 L of 8 mol / L potassium hydroxide solution; the product separation chamber is equipped with aluminum hydroxide seeds with an average particle size of 1 micron.

[0036] The working process of the aluminum-air battery is as follows: start the aluminum-air battery system, the state of the three-way valve 4-1 and 4-2 makes the first electrolyte storage chamber and the battery pack form an electrolyte circuit, and the aluminum-air battery starts to output electric energy. When the conductivity sensor in the first electrolyte storage chamber detects that the conductivity of the electrolyte is lower than 150ms / cm, the three-w...

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Abstract

The invention discloses an aluminum air battery system and a working method thereof. The aluminum air battery system consists of a battery pack, two electrolyte storage chambers and a product separation chamber. The two electrolyte storage chambers sequentially form an electrolyte circuit with the battery pack, so that the system continuously and externally outputs electric energy. When an electrolyte in any one electrolyte storage chamber is completely reacted, the other electrolyte storage chamber is switched to enable the system to work; meanwhile, the reacted electrolyte is discharged intothe product separation chamber to promote aluminum hydroxide to crystallize and precipitate, and after the completion of reaction product treatment, the electrolyte is conveyed to the electrolyte storage chambers for later use. Through the steps, the recycling of the electrolyte is realized, so that the specific energy of an aluminum air battery is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal-air batteries, and in particular relates to an aluminum-air battery system and a working method thereof. Background technique [0002] The metal-air battery is a chemical power source that uses metal and oxygen in the air as the reactive material. Its positive electrode reactant comes from the air, which is inexhaustible and has a high theoretical specific energy. The actual energy density of the metal-air battery depends on the negative electrode. The ampere-hour capacity and the treatment technology of the reaction product. The theoretical ampere-hour capacity of aluminum is 2.98Ah / g, second only to lithium among metals, and the theoretical specific energy of aluminum-air batteries is 8100Wh / kg. The electrolyte of aluminum-air batteries generally uses neutral sodium chloride solution or caustic alkali solution. Alkaline electrolytes have higher conductivity and have advantages in high specific po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04186H01M8/04537H01M12/06
CPCH01M8/04201H01M8/04641H01M12/06Y02E60/50
Inventor 孙公权高建新王二东
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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