Lead-acid storage battery and preparation method thereof
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A lead-acid battery, lead powder technology, applied in the direction of lead-acid battery, lead-acid battery construction, battery electrodes, etc. Chemically active surface, the effect of reducing self-discharge and improving charge-discharge capacity
Inactive Publication Date: 2014-11-12
SOUTH CHINA NORMAL UNIVERSITY
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[0006] The Chinese patent "Lead-Acid Battery Electrolyte and Preparation Method" with application number 201310668012.7 discloses a lead-acid battery electrolyte and a preparation method. ~2g, 1~2g sodium tetraborate, 0.1~0.5g stannous sulfate, 32~36g sulfuric acid and 58~65g pure water. The refinement of lead sulfate particles generated during the process, but because it is added to the electrolyte, sodium polyaspartate does not participate in the reaction process du...
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Embodiment 1
[0044] A kind of lead-acid accumulator, comprises positive pole plate and negative pole plate, and the coating of described lead-acid accumulator negative pole plate comprises each raw material component that following parts by weight form:
[0045] 1000 parts of lead powder,
[0046] 1 part polyaspartic acid,
[0047] 26 parts of silicon dioxide,
[0048] 6 parts of barium sulfate,
[0049] 12 parts of expansion agent,
[0050] 80 parts of acid,
[0051] Mixed carbon 10 parts,
[0052] 106 parts of water.
[0053] Further, the expansion agent is formed by mixing sodium lignosulfonate and humic acid in a mass ratio of 1:3; the mixed carbon is graphite, acetylene black, activated carbon, and artificial carbon in a mass ratio of 4:3:2 :1 by mixing; the acid is dilute sulfuric acid with a density of 1.4g·mL-1.
[0054] A preparation method for lead-acid storage battery, is characterized in that, comprises the steps:
[0055]S1. Preparation of negative plate coating: mix l...
Embodiment 2
[0060] Except that polyaspartic acid is 10 parts in the coating of described lead-acid battery negative plate, other conditions are with embodiment 1;
Embodiment 3
[0062] Except that polyaspartic acid is 20 parts in the coating of described lead-acid battery negative plate, other conditions are with embodiment 1;
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Abstract
The invention discloses a lead-acid storage battery and a preparation method thereof. The lead-acid storage battery comprises a positive plate and a negative plate. Coating of the negative plate of the lead-acid storage battery comprises, by weight, 1000 parts of lead powder, 1-20 parts of polyaspartic acid or poly-aspartate, 2-50 parts of silicon dioxide, 2-10 parts of barium sulfate, 4-20 parts of expanding agents, 80 parts of acid, 10 parts of mixed carbon and 106 parts of de-ionized water. By means of the lead-acid storage battery and the preparation method thereof, the battery failure due to the fact that the negative pole is sulfated is effectively delayed, negative pole hydrogen evolution caused by addition of a large amount of carbon is controlled, and the purposes that capacity of the lead-acid storage battery is improved, and the cycle life is prolonged are achieved. Moreover, carbon content of the negative pole of the storage battery is improved to a certain extent.
Description
technical field [0001] The invention relates to a battery, in particular to a lead-acid battery and a preparation method thereof. Background technique [0002] The polar plates of lead-acid batteries are divided into positive and negative. In order to improve the performance of the positive and negative plates of lead-acid batteries, it is necessary to add positive and negative additives separately when manufacturing the positive and negative plates. Generally speaking, the additives for the positive plates are relatively simple, while The additives of the negative plate are more complex, including expansion agents, corrosion inhibitors and hydrogen evolution inhibitors. For example, commonly used expansion agents can be divided into inorganic expansion agents and organic expansion agents. Inorganic expansion agents include barium sulfate, carbon black, strontium sulfate, etc., which are conducive to the diffusion of electrolyte in the battery and the deep discharge of the b...
Claims
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