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A kind of preparation method of lead-acid battery positive electrode paste and positive plate

A lead-acid battery and positive lead paste technology, which is applied to lead-acid battery electrodes, battery electrodes, chemical instruments and methods, etc., can solve the problems that the content of α-PbO2 in the positive plate cannot be effectively increased, and the expected effect is not achieved. , to achieve the effect of high static charge acceptance, deep high temperature life and cost reduction

Active Publication Date: 2021-10-29
FENGFAN
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Problems solved by technology

However, the study found that the increase of 4BS content in the green plate cannot effectively increase the α-PbO content in the positive plate. 2 However, it did not play the expected role (Sun Haitao, etc., the effect of stacking and stacking curing on positive plates [J], "Battery", 2019, 56(3), 120-133)

Method used

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  • A kind of preparation method of lead-acid battery positive electrode paste and positive plate
  • A kind of preparation method of lead-acid battery positive electrode paste and positive plate
  • A kind of preparation method of lead-acid battery positive electrode paste and positive plate

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preparation example Construction

[0040] The prepared barium-doped carbon nitride is added to the positive lead paste of the battery as an additive material, and the preparation method of the positive plate includes the following steps:

[0041] ①Lead powder, short fiber, barium-doped carbon nitride are stirred and mixed evenly according to the mass ratio of 100:(0.05-0.5):(0.1-1.0);

[0042] ②Add 10-15% water of the mixture mass to the mixture obtained in step ①, fully stir for 1-30min, then add 6-10% of the mixture mass of dilute sulfuric acid aqueous solution, fully stir for 1-30min to obtain lead paste, positive lead paste The density is 3.5-4.5g / cm 3 ;

[0043] ③Scratch the lead paste evenly on the grid, the thickness of the lead paste is 0.5-10mm, cure at 20-80°C for 1-50h, the relative humidity during the curing process is 90-100%, and then dry at 50-100°C for 0.5 -24h, the relative humidity in the drying process is 0-20%, and the positive plate is obtained.

Embodiment 1

[0045] Preparation of barium-doped carbon nitride: weigh 3.0g of Ba(OH) 2 , was added to 100g of pure water, stirred thoroughly until completely dissolved, and Ba(OH) was obtained 2 solution. Take by weighing 10.0g melamine, add to Ba(OH) 2 In the solution, a barium-doped melamine precursor turbid solution is obtained. Stir the turbid solution for 10min and let it stand for 2h. drying the turbid solution of the barium-doped melamine precursor at 100° C. for 24 hours to obtain the barium-doped melamine precursor powder. The obtained barium-doped melamine precursor powder was heated to 550° C., and kept roasting for 2.0 h to obtain novel barium-doped carbon nitride particles. During calcination, the precursor powder was placed in a crucible with a lid under CO 2 In a protective atmosphere. Grinding the obtained novel barium-doped carbon nitride particles into a powder with an average particle diameter of less than 5 μm to obtain a novel barium-doped carbon nitride material...

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Abstract

A positive lead paste for a lead-acid battery, the positive lead paste includes components in the following mass addition ratios, lead powder: short fibers: barium-doped carbon nitride: pure water: dilute sulfuric acid=100: (0.05-0.5): (0.1‑1.0): (10‑15): (6‑10). In the present invention, barium-doped carbon nitride is added to the additive of the positive electrode lead paste, which effectively suppresses the sulfation phenomenon of the positive electrode, and at the same time effectively suppresses the softening and falling off of the positive electrode active material, thereby prolonging the service time of the lead-acid battery, especially It is the power cycle and high temperature use time.

Description

technical field [0001] The invention relates to a preparation method of a positive lead paste and a positive plate of a lead-acid battery, and belongs to the technical field of lead-acid batteries. Background technique [0002] Generally speaking, lead-acid batteries are mainly composed of positive plates, negative plates, electrolyte, separators and shells. Among them, the plate made by coating the lead paste on the grid plays a vital role in the electrical performance of the lead-acid battery. The main active material in the positive electrode of the lead-acid battery is extremely fine PbO 2 , whose particle size is at the nanoscale, where α-PbO 2 It is mainly used as a skeleton component to connect active substances, while β-PbO 2 It mainly plays the role of releasing electricity. When the battery is discharged, the lead dioxide positive electrode acts as the cathode, and the PbO 2 is reduced to Pb 2+ with SO in the electrolyte 4 2- react to form PbSO with little ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/62H01M4/20H01M4/21C01B21/082
CPCC01B21/0605C01P2004/61C01P2006/12H01M4/20H01M4/21H01M4/62H01M4/624H01M4/628Y02E60/10
Inventor 孙海涛陈志雪陈二霞霍玉龙王再红高鹤闫娜张霄喃
Owner FENGFAN
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