A kind of electrolyte solution for secondary zinc-nickel battery and preparation method thereof

A technology of nickel battery and electrolyte, applied in the field of electrolyte for secondary zinc-nickel battery and its preparation, can solve the problems of rapid decrease of battery charge and discharge capacity, serious dendrite growth, and decrease of cycle performance, so as to improve the charge and discharge Cycle performance, reduced electrolyte deposition, high commercial value effects

Active Publication Date: 2021-06-22
山东合泰新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a preparation method and formulation of an electrolyte for a secondary zinc-nickel battery, so as to solve the serious dendrite growth of the above-mentioned conventional nickel-zinc battery, which is prone to short circuit, and the battery charge and discharge capacity decreases rapidly, resulting in serious cycle performance. falling problem

Method used

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  • A kind of electrolyte solution for secondary zinc-nickel battery and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0028] 1. Accurately weigh the following formula for subsequent use: 35w% alkali (technical grade potassium hydroxide), 2w% LiOH, 2w% boric acid, 0.1w% Al(OH) 3 , 10w% ZnO, 0.01w% SiO 2 , the balance is water;

[0029] 2. Weigh 500mL pure water into the beaker, turn on the electric ceramic furnace to heat, add LiOH and aluminum compound at one time, and turn on the stirring equipment;

[0030] 3. When the LiOH and aluminum compound to be added are basically dissolved, start to add alkali; and ensure that the temperature is not higher than 120°C;

[0031] 4. The alkali is added in 3 times, and the alkali added in the previous time is completely dissolved before each addition. After the first two additions of alkali, keep the temperature at 120°C and keep stirring to ensure the complete dissolution of LiOH and aluminum compounds. After the last two alkali additions, continue to stir until completely dissolved;

[0032] 5. After the above solution is clarified, add ZnO to the...

Embodiment 2

[0038] 1. Accurately weigh the following formula for subsequent use: 30w% alkali (technical grade sodium hydroxide), 2w% LiOH, 0.15% boric acid and / or borate, 0.1w% Al 2 Oh 3 , 15w% ZnO, 0.02% SiO 2 , the balance is pure water;

[0039] 2. Weigh 400mL pure water into the beaker, turn on the electric ceramic furnace to heat, add LiOH and aluminum compound at one time, and turn on the stirring equipment;

[0040] 3. When the added LiOH and aluminum compound are basically dissolved, start to add alkali. And ensure that the temperature shall not be higher than 130°C;

[0041] 4. The alkali is added in 5 times, and the alkali added in the previous time is completely dissolved before each addition. After the first two additions of alkali, keep the temperature at 130°C and keep stirring to ensure the complete dissolution of LiOH and aluminum compounds. After the last two alkali additions, continue to stir until completely dissolved;

[0042] 5. After the above solution is clari...

Embodiment 3

[0048] 1. Accurately weigh the following formula for subsequent use: 30w% alkali (technical grade potassium hydroxide), 2w% LiOH / lithium salt, 1% boric acid and / or borate, 1w% Al 2 Oh 3 , 15w% ZnO, 0.03% SiO 2 , the balance is pure water;

[0049] 2. Weigh 400mL pure water into the beaker, turn on the electric ceramic furnace to heat, add LiOH and aluminum compound at one time, and turn on the stirring equipment;

[0050] 3. When the added LiOH and aluminum compound are basically dissolved, start to add alkali. And ensure that the temperature shall not be higher than 130°C;

[0051] 4. The alkali is added in 4 times, and the alkali added in the previous time is completely dissolved before each addition. After the first two additions of alkali, keep the temperature at 130°C and keep stirring to ensure the complete dissolution of LiOH and aluminum compounds. After the last two alkali additions, continue to stir until completely dissolved;

[0052] 5. After the above soluti...

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Abstract

The invention discloses an electrolyte solution for a secondary zinc-nickel battery and a preparation method thereof. The preparation method of the invention includes compounding and constant volume of various battery electrolyte raw materials. The electrolyte solution prepared by the invention includes the following mass components: Raw materials: 25‑50w% alkali, 0.01‑5w% LiOH / lithium salt, 0.1‑5w% boric acid and / or borate, 0.01‑1w% aluminum-containing substances, 5‑15w% ZnO, 0.005‑ 0.03w% SiO 2 , and the balance is pure water; the electrolyte solution prepared by the invention has good circulation performance, long service life and high commercial value.

Description

technical field [0001] The invention relates to the technical field of secondary zinc-nickel batteries, in particular to an electrolyte solution for secondary zinc-nickel batteries and a preparation method thereof. Background technique [0002] Zinc-nickel batteries have a history of more than 100 years. Due to their high safety, non-combustion and non-explosion, environmental protection and economy, and their mass-to-energy ratio is much higher than the existing lead-acid batteries and nickel-metal hydride batteries, they have become the most popular in the current new energy industry. One of the batteries. Compared with existing lead-acid batteries and zinc-nickel batteries, zinc-nickel batteries, as a new type of secondary alkaline battery, have a higher mass specific energy density, which can reach 80-120Wh / kg, much higher than lead-acid batteries and cadmium batteries. Nickel batteries are close to the current lithium iron phosphate commercial batteries. Secondly, the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/28H01M10/26
CPCH01M10/26H01M10/28Y02E60/10Y02P70/50
Inventor 王江林马永泉赵磊
Owner 山东合泰新能源有限公司
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