A kind of preparation method of electrolyte and the zinc-nickel battery of its application

An electrolyte and conductive solution technology, which is applied in the direction of nickel storage battery, composite electrolyte, alkaline storage battery, etc., can solve the problems of electrolyte performance degradation, incomplete dissolution, and increased difficulty in the dissolution process, so as to suppress negative electrode dendrites and save energy. The effect of stabilizing dissolution time and dissolution rate

Active Publication Date: 2021-12-28
山东合泰新能源有限公司
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

In order to meet the above requirements, in the actual preparation process of the electrolyte, a high concentration of alkali and a certain amount of additives will be used, such a high concentration of alkali and a large amount of zinc oxide will make the preparation and dissolution of the electrolyte more difficult, and when Improper dissolving sequence of all components in the electrolyte and improper dissolving amount and dissolving time of the components will lead to incomplete dissolution, which will reduce the performance of the electrolyte

Method used

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  • A kind of preparation method of electrolyte and the zinc-nickel battery of its application

Examples

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Effect test

Embodiment 1

[0048] The composition of electrolytic solution in the present embodiment is as follows: choosing potassium hydroxide is the potassium hydroxide of 400g, the lithium hydroxide of 25g, the aluminum hydroxide of 2g, the zinc oxide of 82g, the fumed silica of 0.17g, the boric acid of 13.6, 866g of pure water.

[0049] S1, take by weighing the pure water that consumption is 600g in reaction container, add the potassium hydroxide of 50g to pure water, stir and heat, after potassium hydroxide dissolves completely, obtain the first conductive solution;

[0050] S2, add 25g of lithium hydroxide to the first conductive solution, keep stirring and heating, until the lithium hydroxide is completely dissolved to obtain the second conductive solution;

[0051] S3. Add aluminum hydroxide to the second conductive solution twice, add 1g of aluminum hydroxide each time, after the aluminum hydroxide added last time is completely dissolved, then proceed to the next step of dissolving operation u...

Embodiment 2

[0060] The composition of the electrolyte in this embodiment is as follows: the electrolyte potassium hydroxide is 536g of potassium hydroxide, 45g of a mixed solution of sodium hydroxide and lithium hydroxide, and the ratio of sodium hydroxide and lithium hydroxide is 2:1 by weight , that is, sodium hydroxide is 30g, lithium hydroxide is 15g, aluminum of 0.8g, zinc oxide of 122g, fumed silica of 0.3, boric acid of 21.4g, pure water of 782g.

[0061] S1. Take by weighing 650g of pure water in the reaction vessel, add 134g of potassium hydroxide to the pure water, stir and heat, and obtain the first conductive solution after the potassium hydroxide is completely dissolved;

[0062] S2. Add 45g of sodium hydroxide and lithium hydroxide mixed solution to the first conductive solution, keep stirring and heating until the sodium hydroxide and lithium hydroxide mixed solution is completely dissolved to obtain the second conductive solution;

[0063] S3. Add aluminum to the second co...

Embodiment 3

[0071] The composition of electrolyte in the present embodiment is as follows: 400g of potassium hydroxide, 25g of lithium hydroxide, 2g of aluminum hydroxide, 82g of zinc oxide, 0.17g of fumed silica, 13.6 of boric acid, and 866g of pure water.

[0072] A kind of preparation method of electrolytic solution, the preparation steps of this electrolytic solution are as follows:

[0073] S1. Take by weighing 600g of pure water in the reaction vessel, add 40g of potassium hydroxide at the same time, stir and heat, mix and dissolve to form the first conductive solution;

[0074] S2. Mixing and dissolving lithium hydroxide in an amount of 25g and the first conductive solution to form a second conductive solution, keeping stirring and heating;

[0075] S3, dissolving 2g of alumina in the second conductive solution five times, keeping stirring and heating, and finally preparing the third conductive solution;

[0076] S4. Mix and dissolve 8.2g of zinc oxide in the third conductive solu...

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Abstract

The invention discloses a method for preparing an electrolyte solution. The steps are as follows: S1, dissolving potassium hydroxide to prepare a first conductive solution; S2, mixing and dissolving sodium hydroxide and or lithium hydroxide with the first conductive solution to form a second conductive solution. Solution; S3, dissolving aluminum and or aluminum hydroxide to the second conductive solution step by step to obtain the third conductive solution; S4, adding zinc oxide and potassium hydroxide alternately step by step to the third conductive solution to obtain the fourth conductive solution ; S5, mixing and dissolving fumed silica and the fourth conductive solution to form the fifth conductive solution; S6, mixing and dissolving boric acid and the fifth conductive solution to form the sixth conductive solution; S7, adding a surplus of Solvent, the finished product electrolyte is obtained; The battery adopts the electrolyte of above-mentioned products, can reduce the dissolution corrosion of zinc pole and avoid the formation of zinc dendrite, and compared with the electrolyte that does not prepare according to this method, the electrolyte prepared by this method is more efficient. Stable, the battery cycle life of the application is longer.

Description

technical field [0001] The invention relates to the field of battery electrolyte, and more specifically, relates to a method for preparing the electrolyte and a zinc-nickel battery for its application. Background technique [0002] Alkaline zinc-nickel batteries have the limited capacity of zinc negative electrodes in silver-zinc batteries, and also have the characteristics of long life of mature nickel positive electrodes in nickel-chromium batteries, and have high working voltage, high specific power, high specific energy, and are suitable for large-scale applications. It is a green, high-energy and environmentally friendly secondary power battery. The electrochemical formula of zinc-nickel battery is: [0003] (-)ZnO|KOH (potassium hydroxide q, saturated ZnO)|Ni(OH) 2 |(+) [0004] Zinc-Nickel Secondary Batteries Zinc secondary batteries using zinc as the anode have attracted widespread attention in recent years because of their advantages such as high operating voltag...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/26H01M10/28H01M10/30
CPCH01M10/26H01M10/28H01M10/30H01M2300/0088Y02E60/10Y02P70/50
Inventor 赵磊马永泉王江林徐伟良
Owner 山东合泰新能源有限公司
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