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Novel grid alloy, positive plate grid containing novel grid alloy and lead-acid storage battery

A technology for lead-acid batteries and positive plates, applied in the direction of electrode carriers/collectors, etc., can solve the problems of unsatisfactory corrosion resistance of lead-calcium alloys, achieve good machining performance, improve elongation, and improve corrosion resistance Effect

Inactive Publication Date: 2019-05-21
ANHUI LEOCH BATTERY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the corrosion resistance of ordinary lead-calcium alloys is not satisfactory

Method used

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  • Novel grid alloy, positive plate grid containing novel grid alloy and lead-acid storage battery
  • Novel grid alloy, positive plate grid containing novel grid alloy and lead-acid storage battery

Examples

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Embodiment 1

[0025] This embodiment prepares a grid alloy and a positive plate grid, wherein the grid alloy contains 0.085% calcium, 0.6% tin, 0.02% aluminum, 0.03% cerium, 0.03% copper and 0.02% by weight. % sodium, the balance lead. The purity of the metal raw material selected in this embodiment is at least 99.99%.

[0026] A graphite crucible electrolytic cell is selected, graphite is used as the anode, and molybdenum rod is used as the cathode. To an electrolyte system containing 70 g of cerium fluoride, 15 g of lithium fluoride and 15 g of barium fluoride was added a mixture of 3.69 g of cerium oxide and 3.78 g of aluminum oxide. Choose 2.0A / cm 2 The anode current density, 20A / cm 2 The cathodic current density of the molten salt electrolysis system was subjected to molten salt electrolysis eutectoid, the electrolysis temperature was 900°C, and a molybdenum crucible was used to receive the prepared 5g cerium-aluminum master alloy, which contained about 3g of cerium and about 2g of ...

Embodiment 2

[0031] This embodiment prepares a grid alloy and a positive plate grid, wherein the grid alloy contains 0.08% calcium, 0.8% tin, 0.02% aluminum, 0.03% cerium, 0.035% copper and 0.025% by weight. % sodium, the balance lead. The purity of the metal raw material selected in this embodiment is at least 99.99%.

[0032] A graphite crucible electrolytic cell is selected, graphite is used as the anode, and molybdenum rod is used as the cathode. To an electrolyte system containing 70 g of cerium fluoride, 15 g of lithium fluoride and 15 g of barium fluoride was added a mixture of 3.69 g of cerium oxide and 3.78 g of aluminum oxide. Choose 2.0A / cm 2 The anode current density, 20A / cm 2 The cathodic current density of the molten salt electrolysis system was subjected to molten salt electrolysis eutectoid, the electrolysis temperature was 900°C, and a molybdenum crucible was used to receive the prepared 5g cerium-aluminum master alloy, which contained about 3g of cerium and about 2g of...

Embodiment 3

[0037] This embodiment prepares a grid alloy and a positive plate grid, wherein the grid alloy contains 0.085% calcium, 0.45% tin, 0.03% aluminum, 0.03% cerium, 0.035% copper and 0.02% by weight. % sodium, the balance lead. The purity of the metal raw material selected in this embodiment is at least 99.99%.

[0038] A graphite crucible electrolytic cell is selected, graphite is used as the anode, and molybdenum rod is used as the cathode. To an electrolyte system containing 70 g of cerium fluoride, 15 g of lithium fluoride and 15 g of barium fluoride was added a mixture of 3.69 g of cerium oxide and 5.67 g of aluminum oxide. Choose 2.0A / cm 2 The anode current density, 20A / cm 2 The cathodic current density of the molten salt electrolysis system is carried out with molten salt electrolytic eutectoid, the electrolysis temperature is 900 ° C, and the prepared 5 g cerium aluminum master alloy is received in a molybdenum crucible, which contains about 3 g of cerium and about 3 g ...

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Abstract

The invention relates to a grid alloy. The grid alloy is prepared from the components in percentage by weight: 0.08-0.09% of calcium, 0.4-0.8% of tin, 0.015-0.025% of aluminum, 0.02-0.03% of cerium, 0.025-0.035% of copper, 0.015-0.025% of sodium and the balance of lead. The invention further relates to a positive plate grid comprising the grid alloy, a preparation method of the grid alloy, a preparation method of the positive plate grid and a lead-acid storage battery provided with the positive plate grid. Through constant current corrosion tests and water loss rate tests, it is found that thecorrosion resistance of the lead-acid storage battery provided with the positive plate grid made of the novel grid alloy is greatly improved, and the water loss rate is further greatly reduced.

Description

technical field [0001] The invention relates to the technical field of lead-acid batteries, in particular to a novel grid alloy, a positive plate grid comprising the grid alloy, and a lead-acid battery comprising the positive plate grid. Background technique [0002] Lead-acid batteries are mainly composed of plates, separators, electrolyte and casing. The pole plate is one of the core components of the battery. It is made of lead paste coated on the grid and solidified by compaction and acid, and is made into a positive plate and a negative plate respectively. The charge and discharge of the battery is achieved by the chemical reaction between the active material on the plate and the sulfuric acid in the electrolyte. Therefore, the grid is the main component of the lead-acid battery, commonly known as the lattice body. The grid is formed by casting or die-casting of lead-based alloys. It has three functions in lead-acid batteries: one is as a carrier of active substances,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C11/06C25C3/36C22C1/03H01M4/68
CPCY02E60/10
Inventor 丁一陈清元崔辉徐杰杰
Owner ANHUI LEOCH BATTERY TECH
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