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Electrolyte solution and preparation method of high-proportion borate zinc battery

An electrolyte and borate technology, which is applied in the manufacture of alkaline batteries, alkaline batteries, and final product manufacturing, etc., can solve problems such as technical bottlenecks, and achieve good results in controlled transfer and charge-discharge cycles.

Active Publication Date: 2017-08-25
王家祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still technical bottlenecks in the zinc secondary battery plate box type large-scale battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] base solution

[0028] KOH 336g

[0029] h 3 BO 3 244g

[0030] LiOH·H 2 O 5g

[0031] additive

[0032] Cyclohexyl hexaphosphate 10g

[0033] Resorphthalic acid 10g

[0034] Isophthalic acid monosulfonic acid 10g

[0035] Micro-Nano SiO 2 5g

[0036] Take an alkali-resistant 2L reactor, add 600mL of pure water, slowly add the components weighed according to the above weight into the reactor, stir and dissolve to obtain the basic solution; slowly add the additives in the above weight ratio to the basic solution, Stir for 10 minutes, calibrate to 1L solution volume with pure water, continue to stir for 30 minutes, let stand to cool, and filter with 400-mesh nickel mesh.

Embodiment 2

[0038] base solution

[0039] KOH 360g

[0040] h 3 BO 3 320g

[0041] LiOH·H 2 O 12g

[0042] additive

[0043] Cyclohexyl hexaphosphate 12g

[0044] Resorphthalic acid 8g

[0045] Isophthalic acid monosulfonic acid 10g

[0046] Micronano TiO 2 10g

[0047] Take an alkali-resistant 3L reactor, add 0.9L pure water, and put the weighed KOH, LiOH.H 2Slowly add O into the reactor and stir. After the dissolution is completed, slowly add weighed boric acid and stir for 15 minutes; then slowly add each weighed additive into the above reactor, stir for 10 minutes, and calibrate with pure water When the solution reaches 1.5L, continue to stir for 30 minutes, let it stand for cooling, and filter it with a 400-mesh nickel mesh.

Embodiment 3

[0049] base solution

[0050] KOH 110g

[0051] h 3 BO 3 189g

[0052] LiOH·H 2 O 13g

[0053] additive

[0054] Cyclohexyl hexaphosphate 5g

[0055] Resorphthalic acid 5g

[0056] Micronano TiO 2 3g

[0057] Take an alkali-resistant 2L reactor, add 600mL of pure water, slowly add the components weighed according to the above weight into the reactor, stir and dissolve to obtain the base solution; slowly add the additives in the above weight ratio to the base solution, Stir for 10 minutes, calibrate to 1L solution volume with pure water, continue to stir for 30 minutes, let stand to cool, and filter with 400-mesh nickel mesh.

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Abstract

The invention relates to a high-proportion borate zinc battery electrolyte and a preparation method. The molar ratio of potassium ions or / and sodium ions in the zinc battery electrolyte to borate ions is 0.28-2, and the additive is The total content in the electrolyte ≤ 40g / L. Mix KOH or / and NaOH 2~6.2 mol / L, H3BO3 3.1~7 mol / L, LiOH.H2O 0.1~0.5 mol / L, and water as solvent to form a basic solution, then add cyclohexyl hexaphosphate , isophthalic acid, isophthalic acid monosulfonic acid, micro-nano SiO2 or micro-nano TiO2, stir and let it cool naturally, then filter it with a 400-mesh sieve. The present invention substantially solves the problems of dendrite growth, zinc element transfer, plate deformation and the like during the charge and discharge process of the zinc negative electrode, significantly improves the cycle performance, and provides a reliable technology for making the zinc-based alkaline battery a new generation of power battery Assure.

Description

technical field [0001] The invention belongs to the technical field of zinc battery electrolyte, and in particular relates to a high-proportion borate zinc battery electrolyte and a preparation method. Background technique [0002] Metal zinc is rich in resources, low in price, non-toxic, and has a high voltage platform and high energy density. Especially the alkaline zinc-nickel battery has high theoretical specific energy (345A.h. / kg), high theoretical voltage (1.75V), large output current, low cost and no pollution to the environment, so it can become a candidate for electric vehicles power supply. However, the current practical bottleneck of secondary batteries with zinc electrodes, especially the pole piece box-type secondary batteries, is mainly in the service life, and the main factors affecting cycle performance are: dendrite growth of zinc electrodes, displacement of zinc elements, Plate deformation, self-corrosion, and passivation will lead to a decrease in the u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/26H01M10/28
CPCH01M10/26H01M10/28Y02E60/10Y02P70/50
Inventor 王家祥王寅
Owner 王家祥
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