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Lead plaster additive for lead-acid storage battery, and preparation method and application therefor

A lead-acid battery and additive technology, applied in the direction of lead-acid batteries, etc., can solve the problems of reduced battery life, poor high-current performance, battery self-discharge, etc., achieve strong operability, simple process steps, and improve battery charging acceptance The effect of capacity and service life

Inactive Publication Date: 2015-12-16
CHAOWEI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Application publication number: CN102709567A, application publication date: 2012.10.03 Chinese patent discloses a lead-acid battery, which belongs to the field of lead-acid batteries, which can solve the problems of poor high-current performance and short cycle life of existing lead-acid batteries
The present invention solves the problems of poor high-current performance and short cycle life of existing lead-acid batteries by adding conductive agent and carbon material to the negative electrode of the lead-acid battery
Its shortcoming is that carbon materials are added to the battery, and the carbon materials are one or more of activated carbon, expanded graphite, spherical graphite, and natural flake graphite. The addition of these carbon materials makes the hydrogen evolution of the negative electrode of the battery more serious, so In this invention, the hydrogen evolution inhibitor (one or more of zinc sulfate, zinc oxide, and bismuth oxide) is added to suppress the hydrogen evolution of the negative electrode, but the hydrogen evolution inhibitor will cause self-discharge to the battery and reduce the service life of the battery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A lead paste additive for lead-acid batteries, which is composed of the following components in mass percentage: 2% pretreated single-wall carbon nanotubes, 1% dispersant, the balance is deionized water, and the dispersant is polyacrylic acid.

[0023] This lead-acid storage battery lead paste additive is obtained by the following method:

[0024] (1) Preparation of pretreated single-walled carbon nanotubes: immerse the single-walled carbon nanotubes in 95% sulfuric acid, ultrasonically treat them at 40°C for 5 hours, filter them with deionized water, ammonium hydroxide solution, deionized Washing with ion water until the pH is neutral to obtain pretreated single-walled carbon nanotubes, which are ready for use.

[0025] (2) Mixing: After weighing each component according to the above mass percentage ratio, add the dispersant to deionized water and stir evenly, then add pretreated single-walled carbon nanotubes, and ultrasonically disperse to obtain lead-acid battery le...

Embodiment 2

[0030] A lead-acid battery lead paste additive, which is composed of the following components in mass percentage: 0.5% pretreated multi-walled carbon nanotubes, 0.5% dispersant, the balance is deionized water, and the dispersant is polyethylene pyrrolidone.

[0031] This lead-acid storage battery lead paste additive is obtained by the following method:

[0032] (1) Preparation of pretreated multi-walled carbon nanotubes: immerse the multi-walled carbon nanotubes in 95% sulfuric acid, ultrasonically treat them at 90°C for 1 h, filter them with deionized water, sodium hydroxide, deionized Washing with water until the pH is neutral to obtain pretreated multi-walled carbon nanotubes, which are ready for use.

[0033] (2) Mixing: After weighing each component according to the above mass percentage ratio, add the dispersant to deionized water and stir evenly, then add pretreated multi-walled carbon nanotubes, and ultrasonically disperse to obtain lead-acid battery lead paste addit...

Embodiment 3

[0035] A lead-acid storage battery lead paste additive, which is made up of the following components in mass percentage: 5% pretreated carbon nanofibers with a fiber diameter less than 100nm, 6% dispersant, and the balance is deionized water, and the dispersant is Sodium dodecyl sulfate.

[0036] This lead-acid storage battery lead paste additive is obtained by the following method:

[0037] (1) Preparation of pretreated carbon nanofibers with a fiber diameter of less than 100nm: immerse carbon nanofibers with a fiber diameter of less than 100nm in 70% nitric acid, ultrasonically treat them for 72 hours at 20°C, filter them with deionized water, Washing with sodium hydroxide solution and deionized water until the pH is neutral, and the pretreated carbon nanofibers with a fiber diameter of less than 100 nm are obtained, ready for use.

[0038] (2) Mixing: After weighing each component according to the above mass percentage ratio, add the dispersant to deionized water and stir ...

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Abstract

The invention discloses a lead plaster additive for a lead-acid storage battery. The lead plaster additive for the lead-acid storage battery comprises the following components in percentage by mass: 0.5-5% of preprocessed one-dimensional carbon nanomaterial, 0.5-6% of dispersing agent and the balance of deionized water. The lead plaster additive for the lead-acid storage battery can effectively restrain the phenomena of sulfation and hydrogen evolution simultaneously, as well as can improve the charge-discharge speed and the service life of the battery. The invention also discloses a preparation method for the lead plaster additive for the lead-acid storage battery, comprising the steps specifically: (1) preparing a pre-processed carbon nano tube; and (2) mixing. The preparation method for the lead plaster additive for the lead-acid storage battery is simple in processing steps, high in operability and suitable for industrial large-scale production.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a lead paste additive for lead-acid batteries and its preparation method and application. Background technique [0002] Due to the increasingly prominent energy crisis and environmental pollution, the focus of global attention is increasingly focused on sustainable and renewable power resources and energy storage systems. Lead-acid batteries have the advantages of mature technology, good safety performance, low cost, stable performance and high resource recovery rate, and still have a large market share. However, after the current lead-acid battery is used for a period of time, the charging and receiving capacity will be relatively poor, and the actual charging capacity and storage are not much, which seriously affects the actual use of the battery. In addition, the surface of the negative electrode is severely sulfated, and large particles of sulfate crystals will c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/08
CPCY02E60/10
Inventor 吴秋菊周明明杨新新刘孝伟戴贵平阙奕鹏柯娃吴亮石沫李厚训
Owner CHAOWEI POWER CO LTD
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