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Preparation method of lead-acid battery negative plate and lead-acid battery

A lead-acid battery and negative plate technology, applied in the direction of lead-acid battery electrodes, lead-acid batteries, battery electrodes, etc., can solve the problems of high cost, complicated process, high pollution, etc., achieve low recycling cost, simple process, overcome energy costly effect

Active Publication Date: 2022-05-06
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of lead-acid battery negative plate and lead-acid battery to solve the problems of complex process, high cost and high pollution in the prior art

Method used

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  • Preparation method of lead-acid battery negative plate and lead-acid battery
  • Preparation method of lead-acid battery negative plate and lead-acid battery
  • Preparation method of lead-acid battery negative plate and lead-acid battery

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preparation example Construction

[0031] At first, the invention provides a kind of preparation method of lead-acid battery negative plate, and this method comprises the steps:

[0032] 1) crushing waste lead-acid batteries, and separating to obtain lead paste;

[0033] 2) Soaking the above-mentioned lead plaster in the aqueous solution of the first dilute acid and / or the first dilute acid salt, filtering and drying the soaked lead plaster;

[0034] 3) adding additives and a second dilute acid to the dried lead paste for paste treatment to obtain negative electrode lead paste;

[0035] 4) Coating the negative electrode lead paste on the surface of the negative electrode lead grid, and obtaining a negative electrode plate after curing.

[0036] Specifically, the present invention uses conventional methods in the field to crush waste lead-acid batteries, such as mechanical crushing, and the crushed lead-acid batteries are separated to obtain lead paste, which may contain active substances of lead-acid batteries...

Embodiment 1

[0055] The present embodiment provides a kind of preparation method of lead-acid battery, and this method comprises the steps:

[0056] 1) After mechanically crushing and separating 1 kg of waste lead-acid batteries, a mixed lead paste is obtained;

[0057] 2) Add 10L of a mixed solution of 0.1mol / L sulfuric acid and 0.1mol / L ammonium sulfate to the lead paste, soak for 1 hour, filter to remove impurities with large particle sizes, and then dry the filtrate at 160°C;

[0058] 3) Get 40g of dried lead plaster, and add 0.130g acetylene black, 0.072g lignin, 0.033g short fiber, 0.052g humic acid, 0.4g barium sulfate, 3.2g 8.7mol / L sulfuric acid and 3g deionized water is carried out and paste treatment, obtains negative electrode lead paste;

[0059] 4) Apply the above-mentioned negative electrode lead paste on a 5.5cm×6.5cm negative electrode lead grid, and dry it to make a negative electrode plate containing 20g of active material.

[0060] Manufacture of lead-acid battery: As...

Embodiment 2

[0072] The present embodiment provides a kind of preparation method of lead-acid battery, and this method comprises the steps:

[0073] 1) After mechanically crushing and separating 1 kg of waste lead-acid batteries, a mixed lead paste is obtained;

[0074] 2) Add 10L of a mixed solution of 0.1mol / L malic acid and 0.1mol / L sodium malate to the lead paste, soak for 1 hour, filter to remove impurities with large particle sizes, and then dry the filtrate at 120°C;

[0075] 3) Get 40g of dried lead plaster, and add 0.130g acetylene black, 0.072g lignin, 0.033g short fiber, 0.052g humic acid, 0.4g barium sulfate, 3.2g 8.7mol / L sulfuric acid and 3g deionized water is carried out and paste treatment, obtains negative electrode lead paste;

[0076] 4) Apply the above-mentioned negative electrode lead paste on a 5.5cm×6.5cm negative electrode lead grid, and dry it to make a negative electrode plate containing 20g of active material.

[0077]Manufacture of lead-acid battery: Assemble ...

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Abstract

The invention provides a preparation method of a lead-acid battery negative plate and a lead-acid battery. The method comprises the following steps: 1) crushing the waste lead-acid battery and separating it to obtain lead paste; 2) placing the lead paste in the first Soak in dilute acid and / or the aqueous solution of the first dilute acid salt, filter and dry the lead paste after soaking; 3) add additives and second dilute acid to the lead paste after drying, and carry out paste treatment to obtain negative electrode paste; 4) coating the negative electrode lead paste on the surface of the negative electrode lead grid, and obtaining a negative electrode plate after curing. The preparation method of the lead-acid battery negative plate provided by the invention has a simple process, and the negative plate can be prepared without converting the lead paste obtained from the waste lead-acid battery into refined lead or high-purity lead oxide. In addition, the method can quickly prepare negative plates, and the cost of recycling waste lead-acid batteries is low, and no pollution will be generated during the recycling process, which is suitable for large-scale recycling of waste lead-acid batteries.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a method for preparing a lead-acid battery negative plate and the lead-acid battery. Background technique [0002] Lead-acid batteries have been widely used in transportation, communication, uninterruptible power supply (UPS) and other fields due to their good cycle performance and safety performance, high current charge and discharge, and low cost. With the widespread use of lead-acid batteries in the above fields, a large number of waste lead-acid batteries will inevitably be produced, and the recycling of these waste lead-acid batteries has become a research hotspot in the field of batteries. [0003] At present, the recycling process of waste lead-acid batteries is mainly divided into fire process and wet process, and the recycled lead paste can be used to make refined lead in lead-acid batteries, but these two processes have their own advantages and disadvantages...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M4/20H01M4/57H01M4/14H01M10/06H01M10/54
CPCH01M4/20H01M4/14H01M4/57H01M10/06H01M10/54H01M2004/027Y02W30/84Y02E60/10
Inventor 曹靖黄妍张俊丰刘凤姣
Owner XIANGTAN UNIV
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