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Compound corrosion inhibitor of alkaline electrolyte of alkaline aluminium battery, electrolyte and preparation method of compound corrosion inhibitor

A composite corrosion inhibitor and electrolyte technology, applied in the direction of alkaline batteries, etc., can solve the problem that the corrosion inhibitor is difficult to meet the requirements of wide application and cannot be taken into account, and achieves improved service life and work efficiency, low cost, Implement simple effects

Active Publication Date: 2011-06-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, through the research on the addition of a single corrosion inhibitor, it is found that after adding a single corrosion inhibitor to the electrolyte, it is impossible to balance the two aspects of improving the corrosion resistance of the anode and ensuring better electrochemical activity.
It is difficult to meet the requirements of wide application only by adding a single corrosion inhibitor

Method used

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  • Compound corrosion inhibitor of alkaline electrolyte of alkaline aluminium battery, electrolyte and preparation method of compound corrosion inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] According to the concentration of sodium stannate 0.015mol / L, indium hydroxide 0.005mol / L, sodium citrate 0.03mol / L, calcium oxide 0.003mol / L, zinc oxide 0.02mol / L in the electrolyte, the required mass Sodium stannate, indium hydroxide, sodium citrate, calcium oxide, and zinc oxide are ground separately, and then the solid powders are mixed evenly. Then take 1.0L of 6mol / L NaOH solution, add the mixed solid powder into the lye in 5 times, stir to dissolve, and let it stand for 7 minutes. Get raw material by N-hydroxypropyltrimethylammonium chloride chitosan (GTCC): 0.045%wt; Sodium dodecylbenzenesulfonate: 0.4%wt by weight percentage, raw material is added to dissolve mixed solid powder In the lye, stir and mix to obtain the alkaline aluminum battery electrolyte containing the composite corrosion inhibitor.

Embodiment 2

[0019] According to the concentration of sodium stannate 0.02mol / L, indium hydroxide 0.005mol / L, sodium citrate 0.03mol / L, calcium oxide 0.004mol / L, zinc oxide 0.02mol / L in the electrolyte, the required mass Sodium stannate, indium hydroxide, sodium citrate, calcium oxide, and zinc oxide are ground separately, and then the solid powders are mixed evenly. Take 1.0L of 6mol / L NaOH solution, add the mixed solid powder into the lye in 6 times, stir to dissolve it, and let it stand for 6 minutes. Press N-hydroxypropyl trioctyl ammonium chloride chitosan (GOCC): 0.05%wt; Sodium dodecylbenzenesulfonate: 0.4%wt weight percentage gets raw material, raw material is joined respectively in dissolving mixed solid Stir and mix evenly in the powdered lye to obtain the alkaline aluminum battery electrolyte containing the composite corrosion inhibitor.

Embodiment 3

[0021] According to the concentration of sodium stannate 0.015mol / L, indium hydroxide 0.005mol / L, sodium citrate 0.04mol / L, calcium oxide 0.004mol / L, zinc oxide 0.03mol / L in the electrolyte, the required mass Sodium stannate, indium hydroxide, sodium citrate, calcium oxide, and zinc oxide are ground separately, and then the solid powders are mixed evenly. Then take 1.0L of 6mol / L NaOH solution, add the mixed solid powder into the lye in 7 times, stir to dissolve, and let it stand for 8 minutes. According to O-carboxymethyl-N-(3-octadecyloxy-2-carboxymethoxypropyl) chitosan (CAPCTS): 0.045%wt; sodium dodecylbenzenesulfonate: 0.4%wt The weight percent of the raw materials is taken, and the raw materials are respectively added to the lye solution in which the mixed solid powder is dissolved, stirred and mixed evenly, and the alkaline aluminum battery electrolyte containing the composite corrosion inhibitor is obtained.

[0022] Attached table: Hydrogen evolution rate of Al alloy...

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Abstract

The invention discloses a compound corrosion inhibitor of an alkaline electrolyte of an alkaline aluminium battery, an electrolyte and a preparation method thereof. The compound corrosion inhibitor of the alkaline electrolyte of an alkaline aluminium battery is compounded by an inorganic corrosion inhibitor and an organic corrosion inhibitor, wherein the inorganic corrosion inhibitor comprises the following components based on the concentration: 0.015-0.1mol / L sodium stannate, 0.005-0.05mol / L of indium hydroxide, 0.03-0.1mol / L sodium citrate, 0.003-0.05mol / L calcium oxide and 0.02-0.1mol / L zinc oxide; the organic corrosion inhibitor comprises the following components by weight percent: 0.01-0.1wt% of chitosan derivant and 0.05-0.5wt% of organic surface active agent. The compound corrosioninhibitor can effectively prevent an aluminium electrode from corroding in an alkaline solution, and the electrochemistry performance of an aluminium anode is not affected.

Description

technical field [0001] The invention belongs to the field of alkaline aluminum battery electrolyte production, and relates to a composite corrosion inhibitor for alkaline aluminum battery alkaline electrolyte, alkaline electrolyte and a preparation method. Background technique [0002] The aluminum anode in the aluminum-air battery is a high-strength energy carrier with high electrochemical equivalent (2.98Ah / g), negative potential (-2.35V vs. SHE), high power, and its theoretical energy density can reach 8100Wh / kg , 47.5 times that of lead-acid batteries, and very friendly to the environment. In addition, aluminum is the most abundant metal element in the earth's crust, with abundant reserves, low price, and no pollution to the environment. The above advantages make aluminum an advantageous chemical power anode material. There are two types of aluminum-air battery systems that use aluminum as the anode material for chemical power sources: one uses alkaline electrolytes; th...

Claims

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Application Information

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IPC IPC(8): H01M10/26
CPCY02E60/124Y02E60/10
Inventor 唐有根彭志光沈冬刘洪涛卢周广
Owner CENT SOUTH UNIV
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