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Lead-acid storage battery negative electrode lead paste and preparation method thereof, and negative electrode plate

A technology of lead-acid battery and negative electrode paste, which is applied in the direction of lead-acid battery electrodes, electrode manufacturing, and battery electrodes. Effect of improving negative electrode performance

Active Publication Date: 2021-04-13
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a lead-acid battery negative lead paste and its preparation method, negative plate, which solves the problem that the negative electrode solidified lead paste is difficult to form tetrabasic lead sulfate in the prior art

Method used

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  • Lead-acid storage battery negative electrode lead paste and preparation method thereof, and negative electrode plate
  • Lead-acid storage battery negative electrode lead paste and preparation method thereof, and negative electrode plate
  • Lead-acid storage battery negative electrode lead paste and preparation method thereof, and negative electrode plate

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preparation example Construction

[0058] The present invention also provides a preparation method of lead-acid battery negative electrode paste, which is used to prepare the above-mentioned lead-acid battery negative electrode paste. The preparation method comprises the following steps:

[0059] Step 1: add part of the lead powder into the paste machine, or add barium sulfate, short chemical fiber, conductive agent and part of the lead powder into the paste machine, add water and wet mix and acid-acid mix in sequence to obtain a semi-suspension slurry;

[0060] Step 2: heating and stirring the semi-suspended slurry by introducing high-temperature steam;

[0061] Step 3: Add the remaining additives to the slurry obtained in Step 2 for stirring. It should be noted that when only part of the lead powder is added to the paste machine in Step 1, the remaining additives refer to barium sulfate, chemical short Fiber, conductive agent and surfactant, when barium sulfate, short chemical fibers, conductive agent and par...

Embodiment 1

[0077] The raw materials of the lead-acid battery negative lead paste provided by the present embodiment include by mass parts: 100 parts of lead powder, 1 part of barium sulfate, 0.1 part of short chemical fiber, 1 part of lignin and lignosulfonate, carbon black and 2 parts of carbon airgel, 15 parts of water and 5 parts of sulfuric acid.

[0078] The preparation method of the present embodiment comprises the steps:

[0079] Step 1: Add 20 parts of lead powder into the paste machine, add all the water into the paste machine after 20 seconds, add water and wet mix for 10 minutes, then add 4 parts of sulfuric acid into the paste machine after 18 minutes, add acid and mix for 15 minutes, and get half Suspended slurry;

[0080] Step 2: Heat and stir the semi-suspended slurry at 100°C for 25 minutes by introducing high-temperature steam;

[0081] Step 3: adding barium sulfate, short chemical fibers, lignin, lignosulfonate, carbon black, carbon aerogel and remaining sulfuric acid...

Embodiment 2

[0086] The raw materials of the lead-acid battery negative lead paste provided by the present embodiment include by mass parts: 100 parts of lead powder, 3 parts of barium sulfate, 0.2 part of short chemical fiber, polyaspartic acid salt and methylene bis-naphthalene sulfonic acid 0.1 parts of sodium, 0.1 parts of graphene and carbon fiber, 10 parts of water and 8 parts of sulfuric acid.

[0087] The preparation method of the present embodiment comprises the steps:

[0088] Step 1: Add 50 parts of lead powder, 3 parts of barium sulfate, 0.2 part of short chemical fiber, 0.1 part of graphene and carbon fiber into the paste machine, add all the water into the paste machine after 55 seconds, add water and wet mix for 2 minutes, then, 6 One part of sulfuric acid was added into the paste machine through 55min to add acid and mix for 5min to obtain a semi-suspended slurry;

[0089] Step 2: Heat and stir the semi-suspended slurry at 70°C for 5 minutes by introducing high-temperature...

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Abstract

The invention discloses lead-acid storage battery negative electrode lead paste, a preparation method thereof and a negative electrode plate, which belong to the technical field of lead-acid storage batteries, and solve the problem that in the prior art, tetrabasic lead sulfate is difficult to form by negative electrode solidified lead paste. The negative electrode lead paste comprises the following raw materials in parts by mass: 100 parts of lead powder, 0.2-3 parts of barium sulfate, 0.05-0.2 part of chemical short fibers, 0.05-1 part of a surfactant, 0.05-3 parts of a conductive agent, 10-15 parts of water and 3-8 parts of sulfuric acid. The preparation method comprises the following steps of adding part of lead powder into a paste mixer or adding barium sulfate, chemical short fibers, a conductive agent and part of lead powder into the paste mixer, and sequentially adding water for wet mixing, adding acid for mixing, heating and stirring, and sequentially adding the remaining additive and the remaining lead powder into the slurry, and stirring to obtain the negative electrode lead paste of the lead-acid storage battery. According to the negative electrode lead paste and the preparation method thereof, the negative electrode plate can be used for a lead-acid storage battery.

Description

technical field [0001] The invention belongs to the technical field of lead-acid batteries, and in particular relates to a lead-acid battery negative electrode paste, a preparation method thereof, and a negative plate. Background technique [0002] Lead-acid batteries are one of the mainstream batteries widely used at present. However, with the continuous improvement of battery performance requirements in application scenarios, the performance shortcomings of traditional lead-acid batteries have become increasingly prominent. [0003] The performance of the spongy lead negative electrode plays a vital role in the overall performance of the lead-acid battery, especially the low temperature performance, irreversible sulfation, and specific surface shrinkage are directly related to the negative electrode. During the charging and discharging process of the spongy lead negative electrode, the volume change between lead sulfate and lead is relatively large, which provides space fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/57H01M4/62H01M4/04H01M4/14H01M10/42
CPCH01M4/57H01M4/62H01M4/04H01M4/14H01M10/4235Y02E60/10
Inventor 黄伟国
Owner CHAOWEI POWER CO LTD
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