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High-proportion zinc borate battery electrolyte and preparation method

An electrolyte and borate technology, which is applied in the manufacture of alkaline batteries, alkaline batteries, and final product manufacturing, can solve technical bottlenecks and other problems, and achieve the effect of controlled transfer and good charge-discharge cycle

Active Publication Date: 2015-07-01
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 2 Slowly 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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PUM

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Abstract

The invention relates to high-proportion zinc borate battery electrolyte and a preparation method. The molar ratio of potassium ions or / and sodium ions in the zinc battery electrolyte to boric acid ions is 0.28-2, and the total content of an additive in the electrolyte is less than or equal to 40 g / L. According to KOH or / and NaOH 2-6.2 mol / L, H3BO3 3.1-7 mol / L, LiOH.H2O 0.1-0.5 mol / L, a base solution is formed by blending with water as a solvent, then phytic acid, benzene-m-disulfonic acid, isophthalic acid-sulfonic acid, micro-nano SiO2 or micro-nano TiO2 are added, and after stirring, standing and naturally cooling, a 400-mesh screen is used for filtering to obtain the high-proportion zinc borate battery electrolyte. The high-proportion zinc borate battery electrolyte and the preparation method provided by the invention substantially solve the problems of dendrite growth, zinc element transfer, polar plate deformation and the like of a zinc cathode in charging and discharging processes, the cycle performance is significantly improved, and reliable technical guarantee is provided for enabling zinc series alkaline batteries to become a new generation of power batteries.

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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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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