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A kind of graphene coating agent and the preparation method of this coating agent making super lead-acid storage battery negative plate

A technology of super lead-acid and vinyl coating agent, which is applied in the direction of lead-acid battery electrodes, battery electrodes, circuits, etc. It can solve the problems of easy expansion and deformation of the grid, reduction of maintenance-free performance, and aggravated hydrogen evolution of the negative electrode, so as to achieve bonding reliability. High, improve the specific energy, reduce the effect of charging time

Active Publication Date: 2018-06-08
SINO INNOV SEMICON (PKU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The usual super battery uses activated carbon as the main carbon material to coat both sides of the raw plate of the battery. However, the addition of too much carbon material makes it difficult for the carbon paste to adhere firmly to both sides of the plate. It is easy to expand, deform and fall off; adding too much carbon material will also aggravate the hydrogen evolution problem of the negative electrode, which will cause serious water loss of the battery, reduce the maintenance performance, and lead to changes in the failure mode of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, a kind of graphene paint that makes super lead-acid storage battery negative plate, it is made by following method: following composition is all calculated by weight ratio, (1) the graphene powder of 120, the lignin of 6 Add sodium sulfonate SLS, 10% indium oxide and 1000% water into the mixing tank, and stir at a high speed to form a ready-to-use mixture; (2) add 20% polyvinylpyrrolidone PVP, 10% lithium ion water-based conductive adhesive CLA -1 and 500% of water are added to another mixing tank and stirred evenly to make the binder diluent; (3) Add the binder diluent to the evenly stirred mixture, then add 300 parts of water, and stir at a high speed to make Obtain graphene paint.

[0015] A kind of preparation method that above-mentioned graphene paint makes super lead-acid storage battery negative plate, it comprises the following steps: (1) the prepared graphene paint is evenly coated on raw negative plate both sides through pasting machine , the we...

Embodiment 2

[0017] Embodiment 2, a kind of graphene paint that makes super lead-acid battery negative plate, it is made by following method: following composition is all calculated by weight ratio, (1) with 20 graphene powder, 1 lignin Sodium sulfonate SLS, indium oxide of 2, barium stearate of 3 and water of 1000 are added in the mixing tank, and the mixture is uniformly prepared by high-speed stirring; (2) sodium carboxymethyl cellulose CMC of 8, sodium carboxymethyl cellulose of 2 The lithium ion water-based conductive adhesive LA-133 and 500 water are added to another stirring tank and stirred evenly to make a binder diluent; (3) Add the binder diluent to the evenly stirred mixture, and then add 850 of water, after stirring at a high speed, the graphene paint was prepared.

[0018] A kind of preparation method that above-mentioned graphene coating agent is made super lead-acid storage battery negative plate, it comprises the following steps: (1) the prepared graphene coating agent is ...

Embodiment 3

[0020] Embodiment 3, a kind of graphene paint that makes super lead-acid storage battery negative plate, it is made by following method: following composition is all calculated by weight ratio, (1) the graphene slurry of 60, the woodiness of 3 Add sodium sulfonate SLS, 4% indium oxide, 3% barium stearate and 1000% water into the mixing tank, and stir at a high speed to form a ready-to-use mixture; (2) then add 12% polyvinylpyrrolidone PVP, 8% lithium Add the water of ionic water-based conductive adhesive LA-133 and 500 into another mixing tank and stir evenly to make the binder diluent; (3) Add the binder diluent to the evenly stirred mixture, and then add 1000 water, after stirring at a high speed to obtain a graphene paint.

[0021] A kind of preparation method that above-mentioned graphene coating agent is made super lead-acid storage battery negative plate, it comprises the following steps: (1) the prepared graphene coating agent is evenly coated on raw negative plate both...

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Abstract

The present invention discloses a graphene coating agent and a preparation method for producing a super lead-acid storage battery negative electrode plate from the graphene coating agent. The preparation method comprises: adding 20-120 parts by weight of graphene, 1-6 parts by weight of sodium ligninsulfonate (SLS), 5-10 parts by weight of a hydrogen evolution inhibitor, and 1000 parts by weight of water to a stirring tank, carrying out high speed and uniform stirring, adding 10-30 parts by weight of a binder and 500 parts by weight of water to another stirring tank, uniformly stirring, mixing the two mixtures, adding 300-1000 parts by weight of water, and carrying out high speed and uniform stirring to prepare the graphene coating agent; uniformly coating the graphene coating agent on both sides of a storage battery negative electrode generating plate, wherein the weight of the graphene coating agent is 0.25-2.5% of the gram weight of the negative electrode plate generating sheet; and closely wrapping with plate coating paper, flattening, pressing, laminating, compacting, carrying out cutting stacking, and drying for 2-4 h at a temperature of 60-100 DEG C. According to the present invention, the graphene coating agent is uniformly adhered on both sides of the lead-acid storage battery raw electrode plate, the adhesion reliability is high, the graphene coating agent is not easily shed, the battery charging time is reduced, and the specific energy, the cycle life, the high-current charge-discharge performance and the high power capacity of the battery are improved.

Description

technical field [0001] The invention belongs to the technical field of lead-acid battery production, and relates to a graphene coating agent and a preparation method for making a negative plate of a super lead-acid battery by the coating agent. Background technique [0002] With the consumption of fossil energy, energy crisis and environmental crisis are intensified day by day. It is increasingly important to vigorously develop renewable energy such as wind energy and solar energy, and gradually replace traditional fossil energy. However, the volatility and intermittency of renewable energy hinders its large-scale utilization. The introduction of energy storage technology is expected to solve this problem, so as to realize the large-scale application of renewable energy. Among various energy storage technologies, electrochemical energy storage technology has broad application prospects. However, lead-acid batteries have gone through a long journey of more than 100 years, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/20
CPCH01M4/20H01M4/625Y02E60/10
Inventor 陈恒张戌有王天奇李洪喜陈彥行张明岩
Owner SINO INNOV SEMICON (PKU) CO LTD
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