KR20090067384A - Additives for electrolyte solution of storage battery, and method for preparing the same - Google Patents

Abstract

Additives for electrolyte solution of a storage battery and a method for preparing the same are provided to suppress the generation of acidic mist or hazardous gas and to lengthen lifetime of a storage battery. Additives for electrolyte solution of a storage battery comprises concentrated strong acidic ion water obtained by centrifuging, pressurizing and concentrating deep sea water, which has pH 0.1 ~ 1, no residual chlorine, and concentration of 70 ~ 99 weight%; micro carbon particles with average particle diameter 0.01 ~ 5 mum; and water. The content of the carbon particles is 0.01 ~ 5 weight% based on the whole electrolyte additives.

Description

Electrolyte additive for storage batteries, and a method of manufacturing the same {ADDITIVES FOR ELECTROLYTE SOLUTION OF STORAGE BATTERY, AND METHOD FOR PREPARING THE SAME}

The present invention relates to an electrolyte additive for a battery, and a method for manufacturing the same, and an electrolyte additive capable of increasing the life, charge rate, and total capacity of the battery, and a method for manufacturing the same.

Lead acid batteries are used in a wide range of fields such as automobiles, ships and construction machinery. However, in a typical lead acid battery, as the charging and discharging are repeated, the function of the battery gradually decreases, and eventually the end of its life is reached.

In order to solve such a problem, the lead acid battery which suppresses the fall of a battery function and can be used for a long time is proposed. As an example, Japanese Patent Application Laid-Open No. 2005-0019350 relates to a lead acid battery that has a low voltage effect and naturally recovers voltage by being left unattended, and includes a fine particle of calcium salt and a pH of 9 or more in the absence of a pH adjuster. The lead storage battery which contains the dispersion liquid shown and dilute sulfuric acid and uses lead dioxide and lead as an electrode is described.

A lead acid battery is a secondary battery in which electromotive force is generated by a chemical reaction between lead, which is an electrode plate, and an electrolyte solution using a dilute sulfuric acid aqueous solution. A typical lead acid battery is designed to be used for about 10 years, but is usually discarded after 4 to 5 years and the fast one is less than 2 years.

As the lead acid battery repeats charging and discharging, lead sulfate (PbSO ₄ ) crystallized by a chemical reaction between sulfuric acid in the electrolyte and lead in the electrolytic plate is attached to the electrode plate. As a result, the lead acid battery has an increased internal resistance and becomes impossible to charge and is discarded.

Such a lead acid battery has the following problems.

1. Since sulfuric acid electrolyte is used, electrolyte is corrosive and toxic, so the load on the environment is high.

2. When sulfuric acid electrolyte is not used (stock, etc.), supplementary solution is needed regularly, and the long-term storage will not be available soon.

3. During charging and discharging, sulfuric acid electrolyte generates acid gas harmful to the metal part, thus adversely affecting the human body.

4. Sulfuric acid electrolyte may not be able to exert its ability under severe use conditions such as overdischarge, undercharging and high temperature.

5. Sulfuric acid electrolyte has a large amount of self discharge because the flow of ions is not stable.

6. The electrode plate corroded by sulfuric acid electrolyte is likely to generate internal shortening and increase self discharge.

7. Electricity in case of full charge needs more than five times of battery capacity to charge and use.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an electrolyte additive for a battery, which is beneficial to the environment, to allow the battery to be used for a long time, and to enable regeneration.

Another object of the present invention is to provide a method for producing the electrolyte additive.

The present invention, in order to achieve the above object, concentrated strong acidic ionized water; Carbon particles; And it provides an electrolyte solution additive for a battery containing water.

The invention also comprises the steps of a) preparing a concentrated strongly acidic ionized water of pH 0.1 to 1; b) preparing microcarbon water including micro carbon particles having an average particle diameter of 0.01 to 5 μm and water; And c) mixing the concentrated strong acidic ionized water with the microcarbonized water.

Hereinafter, the present invention will be described in more detail.

1 is a view showing the configuration of a typical lead acid battery. The lead acid battery 10 includes a cathode 12 including lead dioxide (PbO ₂ ), an anode 14 including lead (Pb), and dilute sulfuric acid (H ₂ SO ₄ ). It consists of electrolyte solution 16.

In the lead acid battery 10, a current flows and an electromotive force is generated by applying a load between the positive electrode 12 and the negative electrode 14. The electrolyte solution 16 is a dilute sulfuric acid (H ₂ SO ₄ ) aqueous solution and contains H ⁺ ions and SO ₄ ^{2 −} ions.

In the lead acid battery, electrons are generated when SO ₄ ^{2 −} ions in the electrolyte solution 16 move to the negative electrode 14 to cause a chemical reaction with Pb of the negative electrode 14, and flow from the negative electrode 14 to the load. In addition, PbO ₂ of the positive electrode 12 generates an electromotive force between the positive electrode 12 and the negative electrode 14 by a chemical reaction between electrons flowing from the load and H ⁺ ions in the electrolyte solution 16.

In general, lead acid batteries are repeatedly used for a long time, and lead sulfate (PbSO ₄ ) sulfated by chemical reaction is attached to the surfaces of the cathode and the anode. This lead sulfate (PbSO ₄ ) interferes with the chemical reaction of the positive electrode, the negative electrode, and the electrolyte solution, causing a decrease in the battery function of the lead acid battery.

The electrolyte additive of the present invention is to solve the problem of the battery, and when added to the electrolyte of the battery to remove the sulphate product to enable regeneration, and the additive to protect the electrode plate of the battery to extend the life It works.

The electrolyte solution additive for a battery of the present invention is characterized by containing concentrated strongly acidic ionized water, carbon particles, and water.

The biggest feature of the present invention is to provide a technique for extending the life of the battery and enabling regeneration by using concentrated strong acidic ion water obtained by performing a specific process as the additive component of the battery electrolyte as described below in the ocean bottom water. Is the point.

The concentrated strongly acidic ionized water included in the electrolyte additive of the present invention has a pH of 1 or less, preferably, pH 0.1 to 1, obtained by centrifugation of the ocean bottom water by physical method, that is, by pressure and concentration. Preferably it means the ionized water having a super acidity of pH 0.1 to 0.5. Ocean bottom water means "sea water that circulates the entire earth in a deep sea of more than 200 m deep that sunlight does not reach", and in the present invention, there is no particular limitation, but the water depth of 300 m or less, about 300 km from the east coast of Japan, More preferably, it is more preferably produced from ocean bottom water, preferably iceberg bottom water, collected at 400 m or less.

The ocean bottom water is distilled and ionized through physical treatment (centrifugation) (of decompression and stirring). 'Dye salt' refers to a state in which salts are decomposed and scattered so that they do not return to their original state, and since only chlorine is removed from NaCl and other minerals remain, it is different from 'desalting' in which salt is completely removed. It's a completely different concept.

Looking at the production method of the concentrated strong acidic ionized water used in the present invention in more detail as follows:

1. Centrifugation: This is a step of diluting the ocean bottom water by performing centrifugation on the ocean bottom water. The centrifugation is performed at 3000 to 5000 revolutions / minute, for 1 minute to 3 hours, preferably 5 minutes to 1 hour. When the pressure is out of the above range during centrifugation, there is a problem in that bleeding does not occur sufficiently or excessively removes useful mineral components. In addition, the centrifugation time can be appropriately adjusted according to the amount of ocean bottom water added. For example, water supply of 5 tons of ocean bottom water may be performed for about 10 to 20 minutes. In one embodiment of the present invention, the chlorine-removed reaction solution collected in the centrifugation process as described above is transferred to a centrifugal supercharger, followed by another chlorine-removed reaction solution obtained by centrifugation. Can be done while supplying The chlorine-removed reaction solution obtained in this step has a pH in the range of about 6.5 to 8.5, and the residual chlorine is characterized by very little or no presence.

2. Centrifugal pressure: It means the step of applying an appropriate pressure while stirring the reaction solution from which the chlorine is obtained above. The pressurization step is carried out while maintaining the stirring speed at 3000 to 5000 revolutions / minute, the pressure conditions are 100 to 150 atm. This step is for activating synergism of ions, and in order to facilitate synergism of ions, the pressure range is preferably in the above range.

3. Centrifugal concentration: It means the step of concentrating by removing water from the pressurized reaction solution. This concentration step maintains the stirring rate at 3000 to 5000 revolutions / minute until the concentration of the components in the reaction solution is about 70% or more, preferably 70 to 99% by weight, more preferably about 80 to 90% by weight. This is done by removing moisture. This step is to lower the pH through the concentration process, in order to achieve the desired pH range, the concentration concentration is preferably in the above range.

By going through the centrifugation, centrifugal pressure and centrifugation steps, the ocean bottom water is removed with chlorine and ionized to obtain super strong acidic concentrated acidic ionized water of pH 1 or less, preferably pH 0.1 to 0.5.

The concentrated strong acidic ionized water used in the present invention is characterized in that it is obtained without using any of the osmosis membrane (reverse osmosis membrane) or ultrafiltration membrane and electrolysis process, which have been conventionally used for ocean bottom water treatment. When the osmosis membrane, ultrafiltration membrane and electrolysis are used as in the conventional method, the salt is not desalted as in the present invention but desalted to obtain ionized water having a composition and properties completely different from those of the concentrated strongly acidic ionized water according to the present invention. You lose. Furthermore, when desalination of the ocean bottom water by conventional methods or the preparation of ionized water using water, super acidic ionized water of pH 1 or less cannot be obtained.

However, in the present invention, the super strong acidic concentrated strong acidic water having a pH of 1 or less, in particular 0.5 or less is obtained by subjecting the ocean bottom water to centrifugation, pressurization, concentration and strong oxidation by the above-mentioned pressure reduction and stirring. In addition, the concentrated strong acidic ionized water obtained in the present invention has an advantage that various kinds of minerals are abundantly contained in the form of organic materials that are environmentally friendly and harmless to the human body. In a preferred embodiment of the present invention, the concentrated strong acidic ionized water may be water (HASAL, Japan).

The concentrated strong acidic ionized water according to the present invention contains sulfate ions obtained from natural ocean bottom water, not chemically produced sulfate ions, and there is no residual chlorine, and in addition to various kinds of minerals, pH 1 or less, In some cases, even though it is super acidic with a pH of 0.5 or less, it does not cause burns or burns on the skin and is safe for living bodies, and it can be effectively regenerated without any harmful effects such as corrosion on the applied battery. . In addition, while the ionized water using the conventional water and the ionized water prepared by other processes return to its original state by contact with air, the sun, organic matters, etc., its use is limited, whereas the concentrated strong acidic ionized water of the present invention does not change with time, It does not deteriorate by temperature, and it does not change pH even when it comes in contact with organic matter, so it is a new characteristic ionized water having a completely different property from the existing electrolyzed water. The concentrated strong acidic ionized water may be diluted and used in a pH range appropriately safe for the human body depending on the purpose and form of use.

The electrolyte additive of the present invention is a calcium, strontium, potassium, sodium, chlorine, magnesium, bromine, lead, cadmium, mercury, zinc, copper, chromium, iron, boron, arsenic, and selenium in addition to the above-mentioned natural sulfate ions. One or more elements selected from the group consisting of may be further included, these are the elements included in the ocean floor water, their presence does not reduce the effect of the electrolyte additive.

It is preferable that pH of the electrolyte solution additive of this invention is 1-4 in terms of sulfate removal and a battery regeneration effect, and it is more preferable that pH is 2-3. Therefore, the concentrated strongly acidic ionized water contained in the electrolyte additive of the present invention can be used in an amount suitable to achieve the pH, for example, 0.0001 to 50% by weight, preferably 0.05 to 10% by weight, more preferably 0.5 to It is good that it is 2 weight%.

In addition, the content of the carbon particles contained in the electrolyte additive is preferably 0.01 to 5% by weight relative to the total electrolyte additive in terms of the effect of the electrode plate protection, more preferably 0.5 to 1% by weight.

The carbon particles are preferably micro carbon particles having an average particle diameter of 0.01 to 5 μm, and the shape of the carbon particles is preferably close to a spherical shape. The carbon particles prevent the adhesion of the crystallized material (sulfate product) to the electrodes of the battery, thereby protecting the electrode plate and exhibiting strong resistance to vibration, shock and shock.

In addition, the water contained in the electrolyte additive is mixed with the carbon particles contained in the form of microcarbon water, the content is contained in the remaining amount excluding the concentrated strong acidic ionized water and the carbon particle content.

The electrolyte additive of the present invention may be injected from the beginning into a storage battery, in particular a lead acid battery, or may be injected as a supplement for a non-chargeable or degraded battery, and preferably from 0.1 to 5 with respect to 100 parts by weight of an electrolyte of the battery. It can be used by the method of adding a weight part, More preferably, 0.5-1 weight part. However, the electrolyte additive of the present invention may exhibit the most excellent effect when added in the above range, but is not limited to the above content range, it is also possible to use the content outside the above range.

Sulfate ions included in the electrolyte additive are added to the electrolyte, and chemically react with lead and lead dioxide used as electrodes of the lead acid battery to generate electromotive force in the lead acid battery.

In addition to the three essential components, the electrolyte additive according to the present invention may further include all additives used in the electrolyte additive in order to improve the performance of the electrolyte, and the type and content thereof are conventional in the art to which the present invention pertains. As known.

The present invention enables the regeneration and use of waste battery by using such a novel electrolyte additive, and succeeded in maximally improving the capacity of the battery without deteriorating the electrode plate of the battery electrode.

The electrolyte additive according to the present invention can be applied in a wider range with the applicable temperature range of -40 ° C to + 70 ° C, and compared with the case of using the conventional additives, the time for reaching a specific voltage or current by charging It has the advantage of significantly reducing the voltage, increasing the maximum achieved voltage during charging, extending the life of the capacitor by about 10 times, and generating no toxic substances (see Table 2).

Electrolytic solution of the present invention comprises the steps of a) centrifugation, centrifugal pressure, and centrifugal concentration of the ocean bottom water to produce a concentrated strong acidic ionized water of pH 0.1 to 1; b) preparing microcarbon water including micro carbon particles having an average particle diameter of 0.01 to 5 μm and water; And c) mixing the concentrated strong acidic ionized water with the microcarbonized water.

At this time, the concentrated strongly acidic ionized water obtained from the deep sea water is as described above. The concentrated strong acidic ionized water is preferably a strong acidic water having a pH close to 0, more preferably, pH 1 or less, more preferably pH 0.1 to 1, even more preferably, pH 0.1 to 0.5, most preferably pH Strong acidic water of 0.3 to 0.5.

In addition, the concentrated strong acidic ionized water may be calcium, strontium, potassium, sodium, chlorine, magnesium, bromine, lead, cadmium, mercury, zinc, copper, chromium, iron, boron, arsenic, and selenium in addition to sulfate ions obtained from natural ocean bottom water. One or more elements selected from the group consisting of these may be further included, but these are the elements included in the ocean floor water, their presence does not reduce the effect of the electrolyte additive.

In addition, the content of the carbon particles contained in the microcarbon water is not particularly limited in the range satisfying the content of the carbon particles contained in the final electrolyte, preferably 0.01 to 5% by weight, more preferably 0.5 to 1% by weight. May be included as a%.

The object in which the electrolyte additive for a storage battery of the present invention can be used is a conventional storage battery mainly comprising a positive electrode, a negative electrode, and an electrolyte solution, and more preferably a lead storage battery in which the positive electrode contains lead dioxide and the negative electrode contains lead.

However, the present invention is not limited thereto, but is also applicable to storage batteries such as automobiles, electric vehicles, ships, military supplies, railways, alarm systems, stationary batteries, communication systems, excavators, construction machinery / medium, computers, farm equipment, electric lifts, and home appliances. The electrolyte additive for a storage battery of the invention can be used.

In the battery electrolyte additive of the present invention, even when the battery is repeatedly charged and discharged, the function of the lead sulfate (PbSO ₄ ) in which the additive component of the electrolyte solution of the battery adheres to the surface of the negative electrode can be suppressed to maintain battery function for a long time. In addition, when the lead acid battery is not used for a long time, the remaining capacity generally decreases due to self discharge, but the electrolyte electrolyte additive for a battery according to the present invention can also suppress such self discharge.

In addition, when the electrolyte solution additive for a battery of the present invention is added, the amount of electricity required for full charge of the battery is about 1.4 times the total capacity of the battery, and thus it can be used in a temperature range of -40 ° C to + 70 ° C without adjusting specific gravity. Do.

The electrolyte solution additive for a battery of the present invention can be used as a method of adding a small amount to the battery electrolyte, the battery is added to the additive does not generate acid mist (mist) and dangerous gases during charging and discharging, the service life of the electrode plate is extended The damage caused by the battery's heat, vibration, sulfate and corrosion is alleviated, the amount of self-discharge is low, the amount of power required for full charge is low, the rapid charge is possible, and the battery can be recharged in the usual way after full discharge. Possible, can be used in the range of -40 ℃ to +70 ℃ without specific gravity control, there is a small voltage drop when the load is applied, there is an advantage that the voltage recovery in the case of no load is very fast.

Hereinafter, preferred embodiments of the present invention are described. However, the following examples are only preferred embodiments of the present invention, and the present invention is not limited to the following examples.

Example  One

(Preparation of concentrated strong acidic ionized water)

HASAL liquid (concentrated strong acidic ion water of pH 0.3 prepared from marine bottom water) from Japan HASAL was used.

The concentrated strong acidic ionized water has an acidity of 72 g / l, an alkalinity of 0.020 g / l, a specific gravity of 1.065, and specific compositions are summarized in Table 1 below.

TABLE 1

Components of Concentrated Strong Acidic Ionized Water content Sulfate ion 85 g / l lead Less than 0.001 mg / l cadmium Less than 0.001 mg / l Mercury Less than 0.00005 mg / l zinc Less than 0.01 mg / l Copper Less than 0.01 mg / l chrome Less than 0.005 mg / l iron Less than 0.03 mg / l boron 1.3 mg / l arsenic Less than 0.001 mg / l Selenium 0.001 mg / l potassium 0.31 g / l salt 5.7 g / l calcium 240 mg / l strontium 0.31 mg / l magnesium Less than 0.1 mg / l Chlorine ion 1.5 g / l Bromine ions Less than 1 mg / l

(Production of microcarbon water)

99 g of microcarbon water was prepared by mixing 0.5 g of artificial graphite HCS-08 (carbon content of 99.9% or more, circular shape, average particle diameter of 5 μm, heat resistance of 3000 ° C. or more) with 98.5 g of purified water.

(Production of Electrolyte Additive)

An electrolyte additive was prepared by mixing 1 g of the concentrated strongly acidic ionized water and 99 g of microcarbon water.

Example  2

6 cells of a new lead acid battery (SOLITE. 80Ah, total capacity of the battery electrolyte 5.2 L) having the configuration as shown in FIG. 1 are 30 ml (about 0.6% of the electrolyte solution) of 5 ml each of the electrolyte additive prepared according to Example 1. ) Was added.

Example  3

Six cells of the lead-acid lead-acid battery (SOLITE. 80Ah, sulfuric acid electrolyte total capacity 5.2 L) were added with 30 ml (approximately 0.6% of the electrolyte) of 5 ml each of the electrolyte additive prepared according to Example 1.

The specific gravity change of the lead acid battery was measured, but there was no change in specific gravity and electromotive force per cell.

Comparative example  One

A new lead acid battery (SOLITE. 80Ah, sulfuric acid electrolyte total capacity 5.2 L) having the configuration as shown in FIG. 1 was used without adding an electrolyte additive.

For the storage batteries of Example 2 and Comparative Example 1, the self-discharge rate, the highest / lowest temperature applied, the charge / discharge characteristics, the decrease rate of the internal battery resistance, the lowest rechargeable battery voltage, etc. were measured. The results are summarized in Table 2 below. .

TABLE 2

Comparative Example 1 Example 2 Self discharge rate About 5% / month About 0.5% / month Applicable maximum temperature 30 ℃ 70 ℃ Applicable minimum temperature -18 ℃ -40 ℃ Time to reach 12V from 10.5V by charging About 5 hours About 25 minutes Maximum voltage reached by charging 12.8V 14 V Time to reach full charge with constant current 20 hours 13 hours Specific gravity of electrolyte 1.25-1.28 1.23 ～ 1.30 Time from full charge state to engine start disable by self discharge About 6-8 months About 60 months Toxic gas generated during charging and discharging SO ₂ , SO ₃ none Reduction rate of battery internal resistance - 15-20% Lowest rechargeable battery voltage 6V or more 3V or less possible

As shown in Table 2, the battery of Example 2 containing the electrolyte additive of the present invention can be seen that the battery characteristics are clearly improved compared to the battery containing a conventional sulfuric acid electrolyte.

2 is a graph comparing charging performance with respect to the storage battery of Example 2 and Comparative Example 1 of the present invention. In the figure, the horizontal axis represents time and the vertical axis represents terminal voltage. As shown in FIG. 2, it can be seen that the storage battery of Example 2 including the electrolyte additive of the present invention is charged faster than the storage battery of Comparative Example 1 and has high charging performance.

3 is a graph comparing discharge performance with respect to the storage battery of Example 2 and Comparative Example 1 of the present invention. In the figure, the horizontal axis represents time and the vertical axis represents terminal voltage. As shown in FIG. 3, it can be seen that the storage battery of Example 2 including the electrolyte additive of the present invention has higher discharge efficiency and charging performance than the storage battery manufactured according to Comparative Example 1.

4 is a graph comparing the self-discharge performance of the storage battery of Example 2 and Comparative Example 1 of the present invention. In the figure, the horizontal axis represents time and the vertical axis represents remaining capacity. As shown in FIG. 4, it can be seen that the storage battery of Example 2 including the electrolyte additive of the present invention can suppress self discharge and maintain a residual capacity even in a long-term use situation.

The waste lead storage battery of Example 3 was charged for 2 hours according to the constant current charging method. In the waste lead-acid battery of Example 3, an electromotive force of 12.6 V or more was generated.

From the above test results, it can be seen that the electrolyte additive of the present invention can suppress the sulfate sulfate (PbSO ₄ ) adhering to the surface of the battery electrode plate, thereby maintaining the function of the battery for a long time.

In addition, the storage battery containing the electrolyte additive does not generate acid mist and dangerous gases during use, thereby ensuring user safety, reducing environmental pollution, and regenerating waste batteries by simply adding a small amount of electrolyte additive. Can be.

Although the electrolyte solution additive was used for the lead acid battery which used lead and lead dioxide as an electrode plate for the electrode in the said Example, of course, it can be used also for the electrolyte solution of the storage battery which used metal other than lead as an electrode plate.

As mentioned above, although preferred embodiment of this invention was described in detail, this invention is not limited to specific embodiment, A various deformation | transformation and a change are possible within the range of the summary of this invention described in the claim. Although the example which used lead for the electrode plate was shown in the said Example, it may be a storage battery or a secondary battery which used metal other than lead for the electrode plate.

1 is a view showing an example of the configuration of a typical lead acid battery.

2 is a graph comparing the charging performance of the lead acid battery of Example 2 and Comparative Example 1.

3 is a graph comparing discharge performance of the lead acid battery of Example 2 and Comparative Example 1. FIG.

4 is a graph comparing the self-discharge performance of the lead acid battery of Example 2 and Comparative Example 1.

[Description of the code]

10: lead acid battery, 12: positive electrode, 14: negative electrode, 16: electrolyte

Claims (10)

Concentrated strongly acidic ionized water having a pH of 0.1 to 1, free of residual chlorine, and a concentration of 70 to 99% by weight, obtained by centrifugation, centrifugal pressure, and centrifugation of the ocean bottom water; Micro carbon particles having an average particle diameter of 0.01 to 5 μm; And water Electrolyte solution additive for a storage battery comprising a. According to claim 1, wherein the content of the carbon particles is a battery electrolyte additive for a battery is 0.01 to 5% by weight relative to the total electrolyte additive. The electrolyte solution additive for a battery according to claim 1, which has a pH of 1 to 4. The method of claim 1, wherein at least one element selected from the group consisting of calcium, strontium, potassium, sodium, chlorine, magnesium, bromine, lead, cadmium, mercury, zinc, copper, chromium, iron, boron, arsenic, and selenium The electrolyte solution additive for a battery that further comprises. The method of claim 1, wherein the concentrated strongly acidic ionized water is Preparing a reaction solution from which the chlorine is removed by centrifuging the ocean bottom water at a stirring speed of 3000 to 5000 revolutions / minute for 1 minute to 3 hours; Pressurizing the reaction solution to 100 to 150 atm while maintaining a stirring speed of 3000 to 5000 revolutions / minute; And Concentrating the pressure-treated reaction solution to remove the moisture while maintaining a stirring speed of 3000 to 5000 revolutions / minute to 70 to 99% by weight It is obtained by performing Electrolyte additive for storage batteries. The electrolyte solution additive for a storage battery according to any one of claims 1 to 5, wherein the electrolyte additive is for a lead acid battery. a) centrifugation, centrifugation, and centrifugation of the ocean bottom water to produce concentrated strong acidic ionized water having a pH of 0.1 to 1, no residual chlorine, and a concentration of 70 to 99% by weight; b) preparing microcarbon water including micro carbon particles having an average particle diameter of 0.01 to 5 μm and water; And c) mixing the concentrated strongly acidic ionized water and microcarbon water. Method for producing an electrolyte additive for a storage battery comprising a. According to claim 7, wherein the step of producing a concentrated strong acidic ionized water of step a) Preparing a reaction solution from which the chlorine is removed by centrifuging the ocean bottom water at a stirring speed of 3000 to 5000 revolutions / minute for 1 minute to 3 hours; Pressurizing the reaction solution to 100 to 150 atm while maintaining a stirring speed of 3000 to 5000 revolutions / minute; And Concentrating the pressure-treated reaction solution to remove the moisture while maintaining a stirring speed of 3000 to 5000 revolutions / minute to 70 to 99% by weight It comprises, manufacturing method. The method of claim 7, wherein the step c) is such that the content of the carbon particles is 0.01 to 5% by weight based on the total electrolyte additive. The method of claim 7, wherein step c) is such that the pH of the electrolyte additive is 1-4.

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