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Negative electrode lead plaster of storage battery with super-strong charging acceptance and preparation method thereof

A technology of acceptability and negative lead paste, applied in the direction of lead-acid battery electrodes, battery electrodes, negative electrodes, etc., can solve the problems such as the need to improve the charge acceptability, the unreasonable composition and proportion of lead paste, and improve the charging The effect of improved acceptance ability, charging acceptance ability and strong consistency

Active Publication Date: 2020-10-30
TIANNENG BATTERY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adds low-temperature additives such as rubber extract and synthetic agent to the negative electrode paste, so that the ultra-low temperature performance of the battery is good, but the charging acceptance capacity needs to be improved
[0007] At present, the charging acceptance capacity of the battery can only reach 0.4-0.8 required by the national standard, and the composition and ratio of the lead paste are not reasonable. Therefore, it is necessary to develop a new negative electrode paste formula to improve the charge acceptance capacity of the lead-acid battery.

Method used

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  • Negative electrode lead plaster of storage battery with super-strong charging acceptance and preparation method thereof
  • Negative electrode lead plaster of storage battery with super-strong charging acceptance and preparation method thereof
  • Negative electrode lead plaster of storage battery with super-strong charging acceptance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] 1. The battery positive grid formula: tin Sn 1.2wt.%; calcium Ca 0.06wt.%, aluminum 0.02.0wt.%; the balance is lead.

[0059] Battery negative grid formula: tin Sn 1.2%; calcium Ca 0.03%, the balance is lead.

[0060] 2. Grid pretreatment

[0061] (1) The positive grid is hardened by normal age and operated according to the conventional method.

[0062] (2) Negative electrode grid pretreatment: After the grid is made, put the negative electrode grid in an aging hardening room for rapid aging, the aging temperature is 85°C, and the aging humidity is 70%. After ~9 hours, the hydrogen peroxide water vapor is made from a hydrogen peroxide aqueous solution with a content of 10-15%. After the time is over, it is naturally air-dried until there is no water vapor on the surface of the grid.

[0063] Use hydrogen peroxide water vapor to oxidize the surface of the grid at high temperature, increase the oxidation corrosion rate of the hydrogen peroxide on the plate, make the sur...

Embodiment 2

[0075] 1. The battery positive grid formula: tin Sn 1.2wt.%; calcium Ca 0.06wt.%, aluminum 0.02.0wt.%; the balance is lead.

[0076] Battery negative grid formula: tin Sn 1.2%; calcium Ca 0.03%, the balance is lead.

[0077] 2. Grid pretreatment

[0078] (1) The positive grid is hardened by normal age and operated according to the conventional method.

[0079] (2) Negative electrode grid pretreatment: same as embodiment 1.

[0080] 3. Paste formula

[0081] Positive lead paste: its components and paste method are the same as in Comparative Example 1.

[0082] Negative lead paste: based on 100kg of raw materials, its components are: barium stannate 0.5kg; humic acid 0.5kg; azoanthracene blue 0.1kg; Ketjen black 0.01kg; expanded graphite 0.3kg; carbon fiber 0.08kg; Sodium methylcellulose (CMC) 0.2kg; Sodium perborate 0.03kg; Dilute sulfuric acid 9kg (density 1.4g / cm 3 ); 10kg of pure water; the balance is lead powder with an oxidation degree of 71% to 73%.

[0083] The pre...

Embodiment 3

[0085] 1. The battery positive grid formula: tin Sn 1.2wt.%; calcium Ca 0.06wt.%, aluminum 0.02.0wt.%; the balance is lead.

[0086] Battery negative grid formula: tin Sn 1.2%; calcium Ca 0.03%, the balance is lead.

[0087] 2. Grid pretreatment

[0088] (1) The positive grid is hardened by normal age and operated according to the conventional method.

[0089] (2) Negative electrode grid pretreatment: same as embodiment 1.

[0090] 3. Paste formula

[0091] Positive lead paste: its components and paste method are the same as in Comparative Example 1.

[0092] Negative lead paste: based on 100kg of raw materials, its components are: barium stannate 0.8kg; humic acid 0.5kg; azoanthracene blue 0.2kg; Ketjen black 0.03kg; expanded graphite 0.3kg; carbon fiber 0.08kg; Sodium methylcellulose (CMC) 0.2kg; Sodium perborate 0.03kg; Dilute sulfuric acid 10kg (density 1.4g / cm 3 ); 12kg of pure water; the balance is lead powder with an oxidation degree of 71 to 73%.

[0093] The pre...

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Abstract

The invention discloses a negative electrode lead paste of a storage battery with super-strong charging acceptance and a preparation method of the negative electrode lead paste. The negative electrodelead paste comprises the following raw materials in percentage by mass: 0.1-1.0 weight percent of barium stannate, 0.3 to 0.5 weight percent of humic acid; 0.1 to 0.2 weight percent of azo anthraceneblue; 0.01 to 0.05 weight percent of Ketjen black; 0.1 to 0.3 weight percent of expanded graphite; 0.05 to 0.08 weight percent of carbon fiber; 0.1 to 0.5 weight percent of sodium carboxymethyl cellulose; 0.01 to 0.05 weight percent of perborate; 9-10 weight percent of dilute sulfuric acid; 10 to 12 weight percent of pure water; and the balance of lead powder with the oxidation degree of 71-73%.The storage battery produced by adopting the negative electrode lead plaster has relatively strong charging acceptance capability, so that the capacity of the storage battery is improved, and the service life of the storage battery is prolonged.

Description

technical field [0001] The invention relates to the technical field of accumulators, in particular to a negative lead paste of an accumulator with super charging acceptance capacity and a preparation method thereof. Background technique [0002] The active material of the negative plate of the lead-acid battery is mainly fine spongy lead particles. When the battery is charged and discharged, the negative plate will shrink, and the fine lead particles will gradually gather to form large lead particles. The porosity of the entire negative plate gradually becomes smaller, the discharge performance of the negative electrode drops sharply. [0003] Charging acceptance has an important impact on the life of lead-acid batteries. It directly represents the level of battery charging efficiency and is an important performance index to measure the performance of lead-acid batteries. If the charge acceptance of the battery is poor, that is, the battery charge capacity is insufficient, ...

Claims

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Application Information

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IPC IPC(8): H01M4/57H01M4/62H01M4/14
CPCH01M4/14H01M4/57H01M4/62H01M4/625H01M4/627H01M2004/027Y02E60/10
Inventor 刘海凤程艳青李越南袁关锐欧阳万忠周文渭房兆锟庄建
Owner TIANNENG BATTERY GROUP
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