Lead-acid battery graphene slurry and preparation method thereof

Abstract

The invention relates to the technical field of batteries, discloses a graphene slurry for a lead-acid battery, and further provides a preparation method of the graphene slurry for the lead-acid battery, and the graphene slurry contains graphene, black gold stomach sheets, nitrate, nitrite and silicic acid. According to the technical scheme, the problems that graphene is difficult to add in the manufacturing process of the graphene battery and the graphene is not uniformly distributed in the active substance of the negative plate can be effectively solved, so that the effects of light weight and convenient addition can be achieved, the charging efficiency of the lead-acid battery can be effectively improved, the cost is reduced, and the service life of the battery is prolonged; the environmental pollution is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and in particular to a lead-acid battery graphene slurry and a preparation method thereof. Background Art

[0002] The main power source of new energy vehicles comes from batteries. At present, graphene batteries are widely used on the market. Graphene batteries have the advantages of long life, light weight, and fast charging. However, in the production process of graphene batteries, there are problems such as difficulty in adding graphene and uneven distribution of graphene in the active material of the negative plate. The main reason for these problems is that graphene is in powder form, has a large specific surface area, and a small tap density, which makes it difficult to add and unevenly distributed. Summary of the invention

[0003] The main purpose of the present invention is to propose a lead-acid battery graphene slurry and a preparation method thereof, aiming to solve the technical problems of the difficulty in adding graphene and the uneven distribution of graphene in the negative plate active material during the production process of the existing graphene battery.

[0004] To achieve the above-mentioned purpose, the lead-acid battery graphene slurry proposed by the present invention contains graphene, black gold stomach tablets, nitrate, nitrite and silicic acid.

[0005] Optionally, the graphene slurry comprises, by mass, 0.5-1.5 parts of graphene, 1-2 parts of black gold stomach tablets, 0.1-0.4 parts of nitrate, 0.1-0.4 parts of nitrite and 0.1-0.4 parts of silicic acid.

[0006] Optionally, the ratio of the graphene, black gold stomach tablets, nitrate, nitrite and silicic acid is 4:6:1:1:1.

[0007] The present invention also provides a method for preparing graphene slurry for lead-acid batteries, comprising the following steps: Step 1: adding hydroxide into a grinding and dispersing stirring kettle, starting the grinding and dispersing stirring kettle after cooling, and stirring evenly; Step 2: Add the black gold stomach tablets into a grinding and dispersing stirring kettle to dissolve in the hydroxide, and after dissolution, add nitrate, nitrite, silicic acid and graphene into the grinding and dispersing stirring kettle and stir evenly; Step 3: The above raw materials are sent to the grinding disperser and the shearing dispersion emulsifier through the rotor pump pipeline valve, and cyclic grinding and shearing are performed to obtain graphene slurry.

[0008] Optionally, in the step 1, the temperature of the grinding and dispersing stirring tank is controlled at 5°C to 7°C.

[0009] Optionally, in the step three, the grinding and shearing time of the grinding and dispersing machine and the shearing and dispersing emulsifier is 2 hours to 3 hours.

[0010] Compared with the prior art, the technical scheme of the present invention has the following beneficial effects: the technical scheme of the present invention, the technical scheme of the present invention takes graphene and black gold stomach tablets as a matrix, utilizes the physical properties of graphene such as low tap density, low resistance, strong conductivity, large specific surface area, and black gold stomach tablets being easily soluble in water, having strong expansion and conductivity, and combines these two materials with nitrate, nitrite, and silicate in a ratio of 4:6:1:1:1 to form graphene slurry, so that the graphene is evenly distributed in the negative plate active material, thereby effectively solving the problem of difficulty in adding graphene and uneven distribution of graphene in the negative plate active material during the production process of graphene batteries, thereby achieving the effect of lightweight and convenient addition, which can effectively improve the charging efficiency of lead-acid batteries, reduce costs, increase the service life of batteries, reduce environmental pollution, and improve charging efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0012] Figure 1 The present invention is a schematic flow chart of a method for preparing graphene slurry for lead-acid batteries according to an embodiment of the present invention.

[0013] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0016] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0017] The invention provides a lead-acid battery graphene slurry and a preparation method thereof.

[0018] In one embodiment of the present invention, the lead-acid battery graphene slurry contains graphene, black gold stomach tablets, nitrate, nitrite and silicic acid.

[0019] The technical solution of the present invention utilizes the physical properties of graphene, such as small tap density, small resistance, strong conductivity, and large specific surface area, and the physical properties of black gold stomach tablets, such as easy solubility in water, strong expansion and strong conductivity, and combines these two materials with nitrate, nitrite and silicate in a ratio of 4:6:1:1:1 to form graphene slurry, thereby effectively solving the problems of difficulty in adding graphene during the production process of graphene batteries and uneven distribution of graphene in the active material of the negative electrode plate, thereby achieving the effect of lightweight and convenient addition, and can effectively improve the charging efficiency of lead-acid batteries, reduce costs, and increase the service life of batteries.

[0020] In the technical solution of the present invention, graphene slurry is prepared according to a certain proportion of graphene, black gold stomach tablets, nitrate, nitrite and silicic acid, so that its comprehensive performance is optimal.

[0021] According to the technical solution of the present invention, the graphene slurry comprises, by mass, 0.5-1.5 parts of graphene, 1-2 parts of black gold stomach tablets, 0.1-0.4 parts of nitrate, 0.1-0.4 parts of nitrite and 0.1-0.4 parts of silicic acid.

[0022] According to the technical solution of the present invention, the ratio of graphene, black gold stomach tablets, nitrate, nitrite and silicic acid is 4:6:1:1:1.

[0023] like Figure 1 As shown, the present invention also provides a method for preparing graphene slurry for lead-acid batteries, comprising the following steps: Step 1: adding hydroxide into a grinding and dispersing stirring kettle, starting the grinding and dispersing stirring kettle after cooling, and stirring evenly; Step 2: Add the black gold stomach tablets into a grinding and dispersing stirring kettle to dissolve in the hydroxide, and after dissolution, add nitrate, nitrite, silicic acid and graphene into the grinding and dispersing stirring kettle and stir evenly; Step 3: The above raw materials are sent to the grinding disperser and the shearing dispersion emulsifier through the rotor pump pipeline valve, and cyclic grinding and shearing are performed to obtain graphene slurry.

[0024] Specifically, in the embodiment of the present invention, in the step 1, the temperature of the grinding and dispersing stirring kettle is controlled at 5°C to 7°C.

[0025] Specifically, in the embodiment of the present invention, in the step three, the grinding and shearing time of the grinding and dispersing machine and the shearing and dispersing emulsifier is 2 hours to 3 hours.

[0026] The technical solution of the present invention utilizes the physical properties of graphene, such as small tap density, small resistance, strong conductivity, and large specific surface area, and the physical properties of black gold stomach tablets, such as easy solubility in water, strong expansion and strong conductivity, and mixes these two materials with nitrate, nitrite and silicate in a certain proportion to prepare graphene slurry, so that its comprehensive performance is optimized, and effectively solves the problems of difficulty in adding graphene during the production process of graphene batteries and uneven distribution of graphene in the active material of the negative electrode plate, thereby achieving the effect of lightweight and convenient addition, and can effectively improve the charging efficiency of lead-acid batteries, reduce costs, and increase the service life of batteries.

[0027] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A lead-acid battery graphene slurry, characterized in that: The graphene slurry contains graphene, black gold stomach tablets, nitrate, nitrite and silicic acid.

2. The lead-acid battery graphene slurry according to claim 1, characterized in that: In parts by mass, the graphene slurry comprises: 0.5-1.5 parts of graphene, 1-2 parts of black gold stomach tablets, 0.1-0.4 parts of nitrate, 0.1-0.4 parts of nitrite and 0.1-0.4 parts of silicic acid.

3. The lead-acid battery graphene slurry according to claim 1, characterized in that: In proportion, the ratio of graphene, black gold stomach tablets, nitrate, nitrite and silicic acid is 4:6:1:1:

1.

4. A method for preparing a lead-acid battery graphene slurry according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1: adding hydroxide into a grinding and dispersing stirring kettle, starting the grinding and dispersing stirring kettle after cooling, and stirring evenly; Step 2: Add the black gold stomach tablets into a grinding and dispersing stirring kettle to dissolve in the hydroxide, and after dissolution, add nitrate, nitrite, silicic acid and graphene into the grinding and dispersing stirring kettle and stir evenly; Step 3: The above raw materials are sent to the grinding disperser and the shearing dispersion emulsifier through the rotor pump pipeline valve, and cyclic grinding and shearing are performed to obtain graphene slurry.

5. The method for preparing graphene slurry for lead-acid batteries according to claim 4, characterized in that: In the step 1, the temperature of the grinding, dispersing and stirring kettle is controlled at 5°C to 7°C.

6. The method for preparing graphene slurry for lead-acid batteries according to claim 4, characterized in that: In the step 3, the grinding and shearing time of the grinding and dispersing machine and the shearing and dispersing emulsifier is 2 hours to 3 hours.

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