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PbCaSnAlCeAg grid alloy

An alloy and grid technology, which is applied in the field of new PbCaSnAlCeAg grid alloys, can solve the problems of corrosion deformation of grid alloys, damage to lead-acid batteries, poor alloy cycle life, etc.

Inactive Publication Date: 2018-01-30
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor cycle life of the PbCaSnAl alloy, a dense oxide film is easily formed on the surface of the anode during the charge and discharge process, which is easy to test the interface resistance, resulting in early capacity loss (PCL)
The grid alloy is passivated in the sulfuric acid solution, resulting in corrosion and deformation of the grid alloy, which will cause certain damage to the lead-acid battery

Method used

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  • PbCaSnAlCeAg grid alloy
  • PbCaSnAlCeAg grid alloy
  • PbCaSnAlCeAg grid alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Design and select the Pb-0.06Ca-1.24Sn-0.15Al-0.01Ce-0.01Ag (wt%) alloy composition ratio, and the preparation method includes the following steps:

[0025] 1) Ingredients: pure Pb (99.99%), pure Ca (99.99%), pure Sn (99.99%), pure Al (99.99%), Ce (99.99%) and Ag (99.99%), according to the mass percentage Prepare their own materials. That is, the weight percentage of the PbCaSnAlCeAg alloy (per 1000 grams of the target alloy can be prepared by 0.6 grams of Ca, 12.4 grams of Sn, 1.5 grams of Al, 0.1 grams of Ce, 0.1 grams of Ag and 985.3 grams of pure Pb) for batching;

[0026] 2) Melting: Clean and preheat the crucible, put the lead ingot preheated to 100°C into the crucible of the electric heating furnace, set the furnace temperature to 400°C, and heat slowly at a heating rate of 10°C / min. After reaching 400°C, add other constituent materials. After the lead alloy is completely melted, keep it warm for 10 minutes, mechanically stir it for 2 minutes, keep it warm ...

Embodiment 2

[0034] (1) Design and select the Pb-0.06Ca-1.24Sn-0.15Al-0.02Ce-0.01Ag (wt%) alloy composition ratio, and the preparation method includes the following steps:

[0035] 1) Ingredients: with pure Pb (99.99%), pure Ca (99.99%), pure Sn (99.99%), pure Al (99.99%) and Ce (99.99%) and Ag (99.99%) as raw materials, according to the The mass percentages are prepared separately. Carry out batching according to the weight percent of above-mentioned PbCaSnAlCeAg alloy (every 1000 grams of target alloys can be formulated by 0.6 gram of Ca, 12.4 gram of Sn, 1.5 gram of Al, 0.2 gram of Ce, 0.1 gram of Ag and 985.2 gram of pure Pb);

[0036] 5) 2) Melting: Clean and preheat the crucible, put the lead ingot preheated to 100°C into the crucible of the electric heating furnace, set the furnace temperature to 400°C, and heat slowly at a heating rate of 10°C / min. After reaching 400°C, add other constituent materials. After the lead alloy is completely melted, keep it warm for 10 minutes, mechan...

Embodiment 3

[0045] (1) Design and select the alloy composition ratio of Pb-0.06Ca-1.24Sn-0.15Al-0.03Ce-0.02Ag (wt%) (wt%), and the preparation method includes the following steps:

[0046] 1) Ingredients: with pure Pb (99.99%), pure Ca (99.99%), pure Sn (99.99%), pure Al (99.99%) and Ce (99.99%) and Ag (99.99%) as raw materials, according to the The mass percentages are prepared separately. Carry out batching according to the weight percent of above-mentioned PbCaSnAlCeAg alloy (every 1000 grams of target alloys can be formulated by 0.6 gram of Ca, 12.4 gram of Sn, 1.5 gram of Al, 0.3 gram of Ce, 0.2 gram of Ag and 985 gram of pure Pb);

[0047] 6) 2) Melting: Clean and preheat the crucible, put the lead ingot preheated to 100°C into the crucible of the electric heating furnace, set the furnace temperature to 400°C, heat slowly, and the heating rate is 5-20°C / min . After reaching 400°C, add other constituent materials. After the lead alloy is completely melted, keep it warm for 10 minu...

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Abstract

The invention discloses a PbCaSnAlCeAg grid alloy. The alloy is prepared from the following chemical components in percentage by mass: 0.06 to 0.07 percent of calcium, 1.2 to 1.3 percent of tin, 0.01to 0.02 percent of aluminum, 0.02 to 0.04 percent of cerium, 0.01 to 0.03 percent of silver and the balance of lead. According to the PbCaSnAlCeAg grid alloy disclosed by the invention, rare earth elements Ce and Ag are simultaneously added into the PbCaSnAlCeAg alloy; alloy grains are fine and uniform; an alloy grain boundary is purified and intercrystalline deep corrosion is prevented, so that corrosion resistance of a lead-calcium alloy is improved; more importantly, a corrosion product can be dense and is not easy to fall off, so that adhesive power between the corrosion product and the grid alloy is improved, loosening and falling of the corrosion product are prevented, and the conductivity of a corrosive film on the surface of the lead-calcium alloy is improved.

Description

technical field [0001] The invention relates to the development of the positive electrode grid alloy of lead-acid battery, in particular to a novel PbCaSnAlCeAg grid alloy. Background technique [0002] The grid is the most important inactive component in the lead-acid battery. Its main functions are: first, to support the active material and act as the carrier of the active material; second, to conduct and collect the current, so that the current is evenly distributed on the active material. In most cases, the life of a lead-acid battery is limited by the performance of the positive plate. The main reasons for the short cycle life of lead-acid batteries are: corrosion deformation and fracture of the positive grid; softening and falling off of the positive active material. Therefore, among the many factors that affect the specific energy and cycle life of lead-acid batteries, the most important is the performance of the positive grid alloy. When the grid with better streng...

Claims

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Application Information

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IPC IPC(8): C22C11/06C22C1/02H01M4/68H01M4/73
CPCY02E60/10
Inventor 崔爱林张建新王晨星项大林
Owner HEBEI UNIV OF TECH
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