Storage battery grid alloy and preparation method thereof

A battery plate and alloy technology, applied in the field of battery grid alloy and its preparation, can solve the problems of easily oxidized lead slag, environmental pollution, etc., and achieve the reduction of intergranular corrosion, simple element composition, corrosion resistance and creep resistance Improved effect

Active Publication Date: 2020-09-11
CHAOWEI POWER CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a battery grid alloy and its preparation method to solve the problem that existing grid alloys contain metallic calcium and are easily oxidized to produce lead slag during the smelting process, causing environmental pollution The problem

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  • Storage battery grid alloy and preparation method thereof
  • Storage battery grid alloy and preparation method thereof
  • Storage battery grid alloy and preparation method thereof

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preparation example Construction

[0041] The present invention also provides a method for preparing battery grid alloy, comprising the following steps:

[0042] Step 1, preparing MAX phase ceramic materials by high-temperature microwave solid-phase synthesis;

[0043] When using high-temperature microwave solid-phase method to synthesize MAX-phase ceramic materials, firstly, M element metal elemental powder, tin powder and graphite powder are added to the high-energy ball mill according to the molar ratio. Among them, the pressure of the powder compactor is 30-100 MPa, and the compaction time is 3-5 minutes; the bulk sample is put into a microwave sintering furnace for vacuum sintering to obtain the synthesized MAX material.

[0044] In the above step 1, the particle size of M element metal elemental powder, tin powder and graphite powder is 10-50 μm; the particle size of M element metal elemental powder, tin powder and graphite powder is strictly controlled because: too large particle size is not conducive to...

Embodiment 1

[0052] This embodiment 1 provides a preparation method of battery grid alloy, comprising the following steps:

[0053] Step 1, prepare Ti 2 SnC material;

[0054] Add Ti powder, Sn powder and graphite powder into the high-energy ball mill according to the molar ratio of 2:1:1. The average particle size of the powder is 50 μm. The speed of the ball mill is set at 1500 rpm, and the ball milling time is 2 hours. The sample mixed with the ball mill was pressed with a pressure of 30 MPa for 3 minutes, and vacuum sintered at 700 ° C for 8 hours in a microwave sintering furnace to obtain Ti 2 SnC material.

[0055] Step 2, prepare Ti 2 SnC master alloy ingot;

[0056] Dissolve 60 parts of electrolytic lead in the smelting furnace, keep the temperature at 550 ° C, and use lead skin to dissolve 10 parts of Ti 2 The SnC material is pressed into the melting furnace, fully stirred for 0.5h, then 30 parts of electrolytic lead is added, stirred for 0.5h, and finally cast into ingots to...

Embodiment 2

[0065] This embodiment 2 provides a preparation method of battery grid alloy, comprising the following steps:

[0066] Step 1, prepare Ti 3 SnC 2 Material;

[0067] Add Ti powder, Sn powder and graphite powder into the high-energy ball mill according to the molar ratio of 3:1:2. The average particle size of the powder is 15 μm. The speed of the ball mill is set at 1000 rpm, and the ball milling time is 1 h. The sample mixed with the ball mill was pressed with a pressure of 50 MPa for 3 minutes, and vacuum sintered at 800 ° C for 9 hours in a microwave sintering furnace to obtain Ti 2 SnC powder.

[0068] Step 2, prepare Ti 2 SnC master alloy ingot;

[0069] Dissolve 60 parts of electrolytic lead in the smelting furnace, keep the temperature at 560 ° C, and use lead skin to dissolve 10 parts of Ti 2 The SnC material is pressed into the melting furnace, fully stirred for 0.5h, then 30 parts of electrolytic lead is added, stirred for 0.5h, and finally cast into ingots to ob...

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Abstract

The invention relates to a storage battery grid alloy and a preparation method thereof, which belong to the technical field of lead acid storage battery production, and solves the problem that environmental pollution is caused as existing grid alloy contains metal calcium, and lead slag is easily oxidized and generated in a smelting process. The storage battery grid alloy provided by the inventioncomprises 0.5-5% of a MAX-phase ceramic material, and the balance of pure lead; in the MAX-phase ceramic material, M is a transition metal element, A is a Sn element, and X is a carbon element. The preparation method for the storage battery grid alloy comprises the following steps: step 1, adopting a high-temperature microwave solid-phase synthesis method to prepare the MAX-phase ceramic material; step 2, preparing a mother alloy ingot; and step 3, forming the grid alloy. The MAX-phase material is adopted, so that inter-crystalline corrosion of the grid alloy is obviously reduced, the structure of an alloy crystalline grain interface is improved, strength, corrosion resistance, creep resistance, and the like of the alloy are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of lead-acid battery production, in particular to a battery grid alloy and a preparation method thereof. Background technique [0002] The role of the grid in the lead-acid battery is to support the active material and act as a carrier for the active material; to conduct and collect current so that the current is evenly distributed on the active material. The quality of the grid directly affects the performance of all aspects of the battery. Therefore, the properties of the grid alloy will directly affect the performance of the battery. [0003] At present, the most common grid alloy used in industry is lead-calcium-tin-aluminum alloy. The biggest advantage of this alloy is that it has a high hydrogen evolution overpotential, so it has excellent maintenance-free performance. However, the presence of calcium element may lead to the formation of calcium sulfate, lead oxide or lead sulfate barrier layer with h...

Claims

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Application Information

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IPC IPC(8): C22C11/00C22C1/03C22C1/10
CPCC22C11/00C22C1/1015C22C1/1036C22C1/1021C22C1/1047
Inventor 陈哲赵宏滨阙奕鹏方建慧
Owner CHAOWEI POWER CO LTD
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