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Method for manufacturing porous steel belt coated with nickel

A technology of steel strip and carbon steel strip, which is applied in the field of preparation of nickel-coated porous steel strip, can solve problems such as difficult to meet battery requirements and battery electrochemical performance problems, and achieve enhanced binding force, improved electrochemical performance, and increased specific surface area Effect

Inactive Publication Date: 2016-05-18
CHANGDE LYRUN MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing perforated nickel-plated steel strips are all electroplated with a layer of nickel on the surface of low-carbon steel to prevent corrosion, but there are great technical difficulties in satisfying the electrochemical performance of the battery. Difficult to meet the requirements of some battery customers

Method used

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  • Method for manufacturing porous steel belt coated with nickel
  • Method for manufacturing porous steel belt coated with nickel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A porous steel strip with a thickness of 0.025mm and a pore diameter of 0.5mm is used as the substrate. After electrochemical degreasing and pickling activation, it enters the electrodeposition nickel process. The nickel plating solution adopts the commonly used Watt system, and the thickness of the nickel plating layer is 0.5μm, after cleaning and drying the nickel-plated material, use a plasma spraying process with a voltage of 10Kv, a current of 120A, and an air pressure of 0.3MPa to spray a layer of nickel powder with a particle size of 1.0um on the surface of the coating, and the spray thickness is 5um , and then carry out high-temperature recrystallization heat treatment on this material. The heat treatment conditions are as follows: a mixed protective atmosphere of hydrogen: nitrogen is 3:1, and the temperature is kept at 600 ° C for 10 hours to obtain a nickel-coated porous steel strip.

[0017] The nickel-coated porous steel strip prepared by adopting the method...

Embodiment 2

[0019] A porous steel strip with a thickness of 0.035mm and a pore diameter of 1.2mm is used as the base material, and after electrochemical degreasing and pickling activation, it enters the electrodeposition process. The nickel plating solution adopts the commonly used Watt system, and the thickness of the nickel plating layer is 0.8 μm. After cleaning and drying the nickel-plated material, a Nickel powder with a layer particle size of 3.0um is sprayed with a thickness of 8um, and then the material is subjected to high-temperature recrystallization heat treatment. The heat treatment conditions are: a mixed reducing mixed atmosphere of hydrogen: nitrogen at 2:1, at 650 ° C Heat preservation for 8 hours to obtain a nickel-coated porous steel strip.

Embodiment 3

[0021] A porous steel strip with a thickness of 0.045mm and a pore diameter of 1.5mm is used as the substrate, and after electrochemical degreasing and pickling activation, it enters the electrodeposition process. The nickel plating solution adopts the commonly used Watt system, and the thickness of the nickel plating layer is 1.0 μm. After cleaning and drying the nickel-plated material, a Nickel powder with a layer particle size of 5.0um is sprayed with a thickness of 10um, and then the material is subjected to high-temperature recrystallization heat treatment. The heat treatment conditions are: a mixed reducing mixed atmosphere of hydrogen: nitrogen at 3:1, at 750 ° C Insulated for 6 hours to obtain a nickel-coated porous steel strip.

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Abstract

The invention provides a method for manufacturing a porous steel belt coated with nickel. A nickel coating with the thickness of 0.5 micrometer to 1.0 micrometer is firstly deposited on a perforated steel belt base material, then nickel powder with the grain size of 1 micrometer to 5 micrometers is sprayed to the surface of the steel belt coated with nickel, and a three-dimensional porous structure is formed; and finally, the porous steel belt coated with nickel of a composite structure is put into a thermal treatment furnace for high-temperature crystallization treatment. According to the porous steel belt coated with nickel manufactured through the process, the surface of the coating is coated with a nickel powder layer of a large-scale structure, the three-dimensional structure is formed on the surface of the porous steel belt, and therefore the specific area of the porous steel belt is effectively increased, the corrosion resisting performance and mechanical performance of the nickel coating are enhanced, and the battery slurry pull performance is improved.

Description

technical field [0001] The invention relates to a method for preparing a metal strip, in particular to a method for preparing a nickel-coated porous steel strip. Background technique [0002] In order to meet the requirements of miniaturization, light weight and high performance of Ni-MH batteries, it is a very effective method to improve the current collector of the battery. Porous steel strips are widely used as plate materials for batteries due to their advantages of high strength, good toughness and low manufacturing cost. The existing perforated nickel-plated steel strips are all electroplated with a layer of nickel on the surface of low-carbon steel to prevent corrosion, but there are great technical difficulties in satisfying the electrochemical performance of the battery. It is difficult to meet the requirements of some battery customers. Contents of the invention [0003] The invention aims to provide a method for preparing a nickel-coated porous steel strip wit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C28/02H01M4/64
CPCY02E60/10
Inventor 肖进春胡鹏李光辉
Owner CHANGDE LYRUN MATERIAL