Electrolyte and aluminum air battery

An aluminum-air battery and electrolyte technology, applied in the field of electrochemistry, can solve problems such as non-compliance with environmental protection requirements, high production costs, and human poisoning, and achieve excellent electrochemical performance, low self-corrosion rate, and prolong discharge life.

Pending Publication Date: 2021-12-28
HUNAN SEIRIOS NEW MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the related art, in order to improve the performance of the electrolyte, an inorganic corrosion inhibitor is added to the electrolyte; however, although most inorganic corrosion inhibitors can reduce the self-corrosion rate of the aluminum alloy material used in the aluminum anode to a certain extent, they often sacrifice Anode activity is at the expense of; and inorganic corrosives are mostly chemically synthesized, the preparation cost is high, the price is expensive, some components may cause environmental pollution, have a certain poisonous effect on humans, and do not meet environmental protection requirements

Method used

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  • Electrolyte and aluminum air battery
  • Electrolyte and aluminum air battery

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Experimental program
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Effect test

Embodiment 1

[0044]The electrolyte solution of this embodiment is composed of the following preparation raw materials in mass percentage: 6% sodium chloride, 0.5% corrosion inhibitor and the balance is water. 100g

[0045] The corrosion inhibitor of the present embodiment is made up of the preparation raw materials of following mass fraction: 10% natural amino acid (cysteine), 15% saccharide compound (glucose), 60% plant essential oil (tea tree essential oil, CAS number : 68647-73-4) and the balance is ethanol.

[0046] The preparation method of the electrolytic solution is as follows: adding sodium chloride to water to obtain a sodium chloride solution; then adding a corrosion inhibitor to the sodium chloride solution to obtain the above electrolytic solution.

[0047] The aluminum-air battery of this embodiment includes an aluminum anode, an air cathode, and an electrolyte, and the electrolyte is the above-mentioned electrolyte for the aluminum-air battery.

[0048] The aluminum anode ...

Embodiment 2

[0055] The difference between this embodiment and embodiment 1 is:

[0056] The electrolyte solution of this embodiment is composed of the following preparation raw materials in mass percentage: 6% sodium chloride, 1% corrosion inhibitor and the balance is water.

[0057] The corrosion inhibitor of the present embodiment is made up of the preparation raw materials of following mass fraction: 10% natural amino acid (cystine), 20% carbohydrate compound (maltose), 60% plant essential oil (tea tree essential oil) and balance to ethanol.

[0058] The self-corrosion rate of the aluminum alloy anode of this embodiment in the electrolyte is 2.17 mg / cm 2 h. The open circuit potential is -1.95V (vs. SHE), and the discharge current density of the air battery in the electrolyte is 100mA / cm 2 When testing for 10 hours, the electromotive force is 2.15V, and the surface of the anode alloy is corroded uniformly.

Embodiment 3

[0060] The difference between this embodiment and embodiment 1 is:

[0061] The electrolyte solution of this embodiment is composed of the following preparation raw materials in mass fraction: 9% sodium chloride, 1% corrosion inhibitor and the balance is water.

[0062] The corrosion inhibitor of the present embodiment comprises the preparation raw material of following mass fraction: 5% natural amino acid (cystine), 10% saccharide compound (fructose), 20% plant essential oil (tea tree essential oil) and remainder is ethanol.

[0063] The self-corrosion rate of the aluminum alloy anode of this embodiment in the electrolyte is 3.58 mg / cm 2 h. The open circuit potential is -1.86V (vs. SHE), and the discharge current density of the air battery in the electrolyte is 100mA / cm 2 When testing for 10 hours, the electromotive force is 1.90V, and the surface of the anode alloy is uniformly corroded.

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Abstract

The invention discloses an electrolyte and an aluminum air battery. The electrolyte comprises the following preparation raw materials: sodium chloride and a corrosion inhibitor. The corrosion inhibitor is prepared from the following raw materials: natural amino acid, carbohydrate and plant essential oil. According to the aluminum air battery disclosed by the invention, the electrolyte containing the tea tree essential oil, the amino acid and the carbohydrate is adopted, so that not only can the self-corrosion of the alkaline aluminum air battery be controlled to be too fast, but also the high electrochemical activity of the aluminum anode alloy can be ensured, and the aluminum air battery has important significance on improving the discharge efficiency of the battery and prolonging the discharge life; and commercial application of the aluminum air battery is facilitated.

Description

technical field [0001] The invention relates to the technical field of electrochemistry, in particular to an electrolyte solution and an aluminum-air battery. Background technique [0002] Metal-air battery is a new generation of green battery, which has low manufacturing cost, high specific energy, recyclable raw materials, and superior performance. At present, metal-air batteries that have been studied more include zinc-air batteries, aluminum-air batteries, and lithium-air batteries, etc., and only zinc-air batteries are closest to industrialization. In the potential series, aluminum is more active than zinc and can obtain a higher battery voltage; an aluminum atom can release three electrons, while a zinc atom can release two electrons, and aluminum can increase the energy of the battery; in addition, aluminum reserves Abundant, low price, so the research progress of aluminum-air battery is very rapid, is a very promising air battery. [0003] Aluminum-air battery is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M6/04H01M12/06
CPCH01M6/045H01M12/06H01M2300/0002
Inventor 王庆易祖成
Owner HUNAN SEIRIOS NEW MATERIAL TECH CO LTD
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