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Sponge structure ceramic reinforced skeleton lead negative grid material and preparation method thereof
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A sponge and skeleton technology is applied in the field of high-performance sponge structure ceramic reinforced skeleton lead anode grid material and its preparation field to achieve the effects of improving mechanical properties, overcoming low mechanical strength and excellent corrosion resistance.
Active Publication Date: 2018-11-13
山东清大银光金属海绵新材料股份有限公司
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[0004] In order to overcome the deficiencies in the prior art, the present invention provides a high-performance sponge structure ceramic reinforced skeleton lead negative grid material for lead-acid batteries and a preparation method thereof. The prepared negative grid material is not only light in weight, high in surface area, It overcomes the shortcomings of low mechanical strength and easy deformation and breakage of sponge-structured metal lead, and because of the high chemical stability of the sponge-structured ceramic-reinforced skeleton, it has excellent corrosion resistance and significantly improves the ceramic-reinforced skeleton-sponge-structured lead anode material. Long working life and working efficiency, has a good prospect of popularization and application
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[0029] The above-mentioned preparation method of the high-performance sponge structure ceramic reinforced framework lead negative grid material for lead-acid batteries consists of the preparation process of the sponge structure ceramic reinforcement framework and the metal lead electrodeposition process on its surface, specifically, including the following steps:
[0030] ① Slurry preparation: Add β-alumina powder, sodium bentonite and calcium bentonite, nano-titanium powder, silica sol, and water glass into deionized water, and form a slurry suspension after mixing. The mass percentages of each component are: β-alumina powder 12-38%, sodium bentonite and calcium bentonite 2-5%, nano-titanium powder 15-30%, silica sol 1-5%, water glass 2-7% %, the rest is deionized water; the mass ratio between sodium bentonite and calcium bentonite in the slurry suspension is 1.5:1.
[0031] ②Polyurethane sponge structure hanging treatment: immerse the polyurethane sponge structure in the slu...
Embodiment 1
[0049] Embodiment 1 of the present invention provides a sponge structure ceramic reinforced skeleton lead negative grid material, the preparation process of which is as follows:
[0050] ① Slurry preparation: Add β-alumina powder, sodium bentonite and calcium bentonite, nano-titanium powder, silica sol, and water glass into deionized water, and form a slurry suspension after mixing. The mass percentages of each component are respectively: β-alumina powder 15%, sodium bentonite and calcium bentonite 3% altogether, nano titanium powder 16%, silica sol 3%, water glass 4%, all the other are deionized water; The mass ratio between sodium bentonite and calcium bentonite in slurry suspension is 1.5:1.
[0051] ② Immerse the polyurethane sponge structure in the slurry suspension, and apply a certain pressure to discharge the gas in the polyurethane sponge structure, so that the slurry is immersed in the polyurethane sponge structure.
[0052] ③Dry the polyurethane sponge structure mo...
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Abstract
The invention provides a lead cathode grid material with a sponge-structured ceramic reinforced framework for a lead acid storage battery. Sponge-structured conductive ceramic is used as a reinforced framework; and a lead-plated layer is electrically deposited on the surface of the sponge-structured conductive ceramic reinforced framework. The invention further provides a preparation method of the lead cathode grid material. The preparation method specifically comprises the following steps: performing drawing through a pressure-infiltration technology to form a polyurethane sponge model, and then sintering the polyurethane sponge model into the sponge-structured conductive ceramic reinforced framework; and electrically depositing a uniform lead layer on the surface of the sponge-structured conductive ceramic reinforced framework through alternating current deposition so as to form the lead cathode grid material with the sponge-structured ceramic reinforced framework. The lead cathode grid material, prepared by the preparation method disclosed by the invention, with the sponge-structured ceramic reinforced framework is light in weight and high in surface area and overcomes the shortcomings that sponge structured metal lead is low in mechanical strength and easy to deform and break; furthermore, due to the high chemical stability of the sponge-structured conductive ceramic reinforced framework, the service life of the prepared lead cathode material is obviously prolonged, and the working efficiency of the lead cathode material is obviously improved.
Description
technical field [0001] The invention relates to the technical field of negative grid materials for lead-acid batteries, in particular to a high-performance sponge-structured ceramic reinforced skeleton lead negative grid material for lead-acid batteries and a preparation method thereof. Background technique [0002] Sponge-structure metallic lead has the advantages of high porosity, large specific surface area, and significantly lighter weight than lead. Therefore, sponge-structure metallic lead is an ideal material for the negative grid of acid batteries. However, the sponge-structured metal lead has the disadvantages of low mechanical strength, easy deformation and breakage, and it is difficult to meet the working requirements of the actual lead-acid battery. [0003] In order to solve the problem of low mechanical strength of sponge-structured metal lead, previous researchers deposited a metal-lead layer on the surface of metal and alloy mesh substrates or sponge-structur...
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