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Pb-Sn grid alloy and preparation method

An alloy and grid technology is applied in the field of lead-tin grid alloy and its preparation to achieve the effects of improving working performance, improving corrosion resistance and increasing oxygen evolution overpotential

Inactive Publication Date: 2019-03-01
CHINA ELECTRIC POWER RES INST +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention proposes a kind of lead-tin grid alloy and preparation method, aims to solve the problem of improving the performance of lead-acid storage battery grid alloy

Method used

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  • Pb-Sn grid alloy and preparation method
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  • Pb-Sn grid alloy and preparation method

Examples

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preparation example Construction

[0019] Based on the above examples, see figure 1 As shown, this embodiment also provides a method for preparing a lead-tin grid alloy, including the following steps:

[0020] Step 1 S101: Prepare 1.1-1.4 parts by weight of tin, 0.003-0.08 parts by weight of Ag, Sm or La, and several parts by weight of lead;

[0021] Step 2 S102: Put the lead into a crucible furnace to melt, then add the tin, and the Ag, Sm or La, and pour the lead, tin, and the Ag, Sm or La into the furnace after they are completely melted In the mold, the alloy is cast into a cylindrical shape.

[0022] Specifically, the above method also includes:

[0023] Step 3 S103: Weld wires on the alloy, place it in a silicone mold, pour epoxy resin into it for solidification, and make electrodes.

[0024] Specifically, the above-mentioned lead may be a lead ingot.

Embodiment 1

[0027] A Pb-Sn grid alloy for lead-acid batteries, comprising the following components by weight:

[0028] Sn 1.3 parts

[0029] 98.7 parts of Pb.

[0030] Put Pb into the crucible furnace to melt, then add the Sn, pour into the mold after Pb and Sn are completely melted, and cast into a cylindrical alloy. Pb may be lead ingots.

[0031] Solder the wires on the alloy, place it in a silicone mold, pour epoxy resin to solidify, and make an electrode for use.

Embodiment 2

[0033] A Pb-Sn grid alloy for lead-acid batteries, comprising the following components by weight:

[0034] Sn 1.1 parts

[0035] Ag 0.003 parts

[0036] 98.897 parts of Pb.

[0037] Put Pb into the crucible furnace to melt, then add the Sn and Ag, pour into the mold after the complete melting of Pb, Sn and Ag, and cast into a cylindrical alloy. Pb may be lead ingots.

[0038] Solder the wires on the alloy, place it in a silicone mold, pour epoxy resin to solidify, and make an electrode for use.

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Abstract

The invention provides a Pb-Sn grid alloy on one hand. The Pb-Sn grid alloy is prepared from components in parts by weight as follows: 1.1-1.4 parts of Sn, 0.003-0.08 parts of Ag, Sm or La and multiple parts of Pb. The Pb-Sn grid alloy has beneficial effects as follows: by addition of Ag, Sm or La element to the Pb-Sn grid alloy, the corrosion rate of the alloy can be effectively reduced, and corrosion resistance of the alloy is improved; moreover, after the Ag, Sm or La element is added, oxygen evolution overpotential of the alloy is increased, and an oxygen evolution reaction is inhibited; furthermore, after the Ag, Sm or La element is added, resistance of an alloy corrosion film is reduced, growth of Pb(II) oxide with poorer electrical conductivity is inhibited, and electrical conductivity of the corrosion film is improved. By addition of the Ag, Sm or La element to the Pb-Sn grid alloy, working performance of the Pb-Sn grid alloy is greatly improved.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a lead-tin grid alloy and a preparation method thereof. Background technique [0002] At present, lead-acid batteries are widely used in the fields of automobiles, energy storage, and communications due to their mature technology, good performance, and long life. How to improve its service life is the main research direction of people, and the grid, as an important part of the lead-acid battery, plays the role of active material carrier and current collector in the lead-acid battery, so improving the performance of the grid is the current stage The focus of the research. [0003] Grid alloys have gradually moved from the initial lead-antimony alloy to the current lead-calcium alloy, but both have some shortcomings that affect the performance of the battery. Lead-antimony alloy has good casting and deep cycle performance, but there is a phenomenon of antimony poisoni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/02C22C11/06H01M4/68H01M4/73H01M4/84
CPCC22C1/02C22C11/06H01M4/685H01M4/73H01M4/84Y02E60/10
Inventor 胡晨李恩雨蔡先玉金翼杨宝峰王绥军孙召琴穆居易黎可尹秀娟林亚洲毛海波刘家亮刘超群吕刚
Owner CHINA ELECTRIC POWER RES INST
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