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Negative electrode lead paste of lead-acid storage battery

A lead-acid battery and negative electrode paste technology, applied in the field of electrochemistry, can solve the problems of short cycle life of lead-acid batteries, influence on development and use, early capacity loss, etc., achieve good hydrogen evolution suppression effect, long cycle life, reduce The effect of precipitation

Inactive Publication Date: 2018-03-30
HENAN CHAOWEI POWER SUPPLY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, lead-acid batteries have shortcomings such as short cycle life, poor low temperature performance and early capacity loss, which affect their development and use.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A negative lead paste for lead-acid battery, the raw materials are composed of 83% of lead powder, 0.3% of humic acid, 0.08% of short fiber, 0.3% of acetylene black, 6.82% of sulfuric acid and 9.5% of water in terms of mass percentage. Wherein, the density of the sulfuric acid is 1.4±0.001g / cm 3 (25° C.); the short fibers are chemical short fibers with a length of 5 mm.

Embodiment 2

[0025] A negative lead paste for a lead-acid storage battery. The raw materials are composed of 81% lead powder, 0.5% humic acid, 0.08% short fiber, 0.4% acetylene black, 8.6% sulfuric acid and 9.42% water in terms of mass percentage. Wherein, the density of the sulfuric acid is 1.4±0.001g / cm 3 (25°C); the short fibers are chemical short fibers with a length of 8 mm.

Embodiment 3

[0027] A negative lead paste for a lead-acid storage battery. The raw materials are: 82% of lead powder, 0.4% of humic acid, 0.06% of short fiber, 0.24% of acetylene black, 6.7% of sulfuric acid and 10.6% of water in terms of mass percentage. Wherein, the density of the sulfuric acid is 1.4±0.001g / cm 3 (25° C.); the short fibers are chemical short fibers with a length of 5 mm.

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Abstract

The invention discloses negative electrode lead paste of a lead-acid storage battery. The negative electrode lead paste is prepared from the raw materials based on mass percentages: 81-85% of lead powder, 0.1-0.5% of humic acid, 0.06-0.1% of short fibers, 0.1-0.5% of acetylene black, 6.7-8.6% of sulfuric acid and 7.9-10.6% of water. A preparation method of the lead paste of the lead-acid storage battery comprises the steps of adding the lead powder, humic acid, short fibers and acetylene black into a paste mixer to be stirred for 8-12min, and then adding water to the paste mixture to be subjected to wet stirring for 10-14min; and adding sulfuric acid to the paste mixture while stirring, wherein the sulfuric acid adding time is 13-16min, and performing continuous stirring for 10-15min aftersulfuric acid is added completely to obtain the lead paste. The lead-acid storage battery prepared from the lead paste is stable in charging-discharging performance, relatively high in low-temperature charging-discharging performance, long in cycle life and relatively high in negative electrode hydrogen evolution suppression effect.

Description

technical field [0001] The invention belongs to the technical field of electrochemistry, and in particular relates to a negative electrode paste of a lead-acid storage battery. Background technique [0002] Due to a series of advantages such as low price, easy availability of raw materials, high use safety, suitability for high current and wide temperature range, lead-acid batteries have advantages in chemical power sources. Moreover, with the development of the electric bicycle industry, Lead-acid batteries are widely used as a power source for electric bicycles and electric motorcycles. However, lead-acid batteries have shortcomings such as short cycle life, poor low-temperature performance, and early capacity loss, which affect their development and use. Technical indicators such as low-temperature performance and charge acceptance are related to the negative plate of lead-acid batteries, and it is urgent to improve the performance level of the negative plate to meet the...

Claims

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Application Information

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IPC IPC(8): H01M4/36H01M4/56H01M4/62H01M10/06
CPCH01M4/362H01M4/56H01M4/62H01M4/628H01M10/06H01M2220/20Y02E60/10
Inventor 胡庆涛李松林王淼葛冰
Owner HENAN CHAOWEI POWER SUPPLY
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