A kind of electrolyte corrosion inhibitor, electrolyte solution for aluminum-air battery and aluminum-air battery

Abstract

The invention discloses an electrolyte corrosion inhibitor, an electrolyte for aluminum air cell and an aluminum air cell. The electrolyte corrosion inhibitor is an ethanol solution of lavender essential oil, and the volume percentage content of lavender essential oil is 10%-60%. The main components of lavender essential oil comprise linalool, linalyl acetate, eucalyptol, beta-ocimene, 4-terpineol and camphor. Group molecules contain lone pair electrons, oxygen atoms in the groups are absorbed on a metal surface through the lone pair electrons, an insoluble complex layer is formed, thus the metal surface is separated from an aqueous solution, and a corrosion inhibition function is achieved. The electrolyte corrosion inhibitor prepared from lavender essential oil extracted from plants and ethanol is a novel green environmental protection corrosion inhibitor, and has advantages of low cost, low toxicity or no toxicity, no environmental pollution and the like. The electrolyte corrosion inhibitor is added in an electrolyte, a self corrosion rate of an aluminum anode can be lowered remarkably, the electrochemical performance can be raised, and the electrolyte corrosion inhibitor has good economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the technical field of aluminum-air batteries, and specifically relates to an electrolyte slow-release agent, and also relates to an electrolyte for an aluminum-air battery and an aluminum-air battery using the electrolyte. 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 pro...

AI Technical Summary

Problems solved by technology

At present, compared with zinc anode materials, aluminum anode materials for air batteries have the primary problem of self-corrosion in alkaline solution, which greatly reduces the utilization rate of anodes and hinders the commercial application of aluminum-air batteries.

Although most inorganic corrosion inhibitors can reduce the self-corrosion rate of aluminum alloy materials used in aluminum anodes to a certain extent, they are often at the expense of anode activity; and most of the inorganic corrosion inhibitors are chemically synthesized, with high preparation costs and high prices. , some components may cause environmental pollution, have a certain toxic effect on humans, and do not meet environmental protection requirements

Images