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Steel strip plated with composite film containing cobalt nanowires and preparation method thereof

A technology for cobalt nanowires and steel strips is applied in the field of steel strips coated with a composite film containing cobalt nanowires and the preparation thereof, which can solve the problems of poor bonding force, insufficient surface hardness, easy scratches, etc., and improve the bonding strength. , Excellent elongation and corrosion resistance, the effect of facilitating stamping

Active Publication Date: 2011-01-26
HUNAN YONGSHENG NEW MATERIALS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, direct coating of a layer of composite nickel film containing nanowires on the steel strip has two major disadvantages, one is poor bonding with the substrate, and the other is that the surface hardness is not enough, and it is easy to scratch when stamping

Method used

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  • Steel strip plated with composite film containing cobalt nanowires and preparation method thereof
  • Steel strip plated with composite film containing cobalt nanowires and preparation method thereof
  • Steel strip plated with composite film containing cobalt nanowires and preparation method thereof

Examples

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Effect test

Embodiment 1

[0092] The specific preparation process of the above-mentioned steel strip is as follows: (see figure 2 )

[0093] The special steel strip for BDCK batteries with a thickness of 0.25 mm produced by Shanghai Baoshan Iron and Steel Co., Ltd. was selected as the electroplating substrate. Its chemical composition is: C: 0.029% (% means percentage by weight, the same below)

[0094] Si: 0.02%

[0095] Mn: 0.2%

[0096] P: 0.09%

[0097] S: 0.003%

[0098] Al: 0.06%.

[0099] 1. Surface pretreatment before plating

[0100] In order to form a good bond between the coating and the substrate, the above-mentioned steel strip is subjected to the following surface pretreatment before electroplating. Since the surface of the low-carbon steel strip used is relatively flat, there is no need for grinding and mechanical polishing before nickel plating, and degreasing and activation treatment are directly carried out. In this example, the chemical high temperature degreasing method is ...

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Abstract

The invention discloses a steel strip plated with composite film containing cobalt nanowires and a preparation method thereof. the steel strip of the invention uses a steel strip as the substrate, and the both sides of the steel strip are respectively plated with a multilayer composite film containing cobalt nanowires. The bottom layer of each multilayer composite film containing cobalt nanowiresis a micron crystalline nickle plating, the middle layer is a nickle composite plating containing cobalt nanowires and the surface layer is nanocrystalline nickle-cobalt alloy plating. The invention also provides the preparation method of the steel strip. The preparation method comprises the following steps: degreasing and activating a steel strip, adopting the direct current electroplating mode to prepare a micron crystalline nickle plating on the substrate, annealing, adopting the pulse electroplating mode to prepare a nickle composite plating containing cobalt nanowires on the nickle plating and then adopting the pulse injection mode to prepare a nanocrystalline nickle-cobalt alloy plating on the nickle composite plating containing cobalt nanowires. The steel strip is closely combined by the multilayer composite film containing cobalt nanowires and the low carbon steel strip, has good corrosion resistance, punching property and high load resistance and can be used as the shell material of the lithium ion power battery and high-performance alkaline Zn / MnO2 battery.

Description

technical field [0001] The invention relates to a steel strip coated with cobalt-containing nanowire multilayer composite film and a preparation method thereof. Background technique [0002] With the increasingly prominent problems of environmental pollution, energy crisis and resource shortage, countries all over the world are paying more and more attention to the development of high-efficiency, clean, renewable energy and related technologies such as electric vehicles, electric bicycles, and portable electric tools. Lithium-ion battery is a new type of green energy storage device developed in recent years. It has attracted widespread attention due to its high energy density and high rate discharge performance. It is not only widely used in portable electronic devices, but also gradually used in electric vehicles. , electric bicycles and electric tools and other large and medium-sized electric equipment. In particular, the lithium-ion power battery has become the main dire...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01C25D7/06C25D3/12C25D5/08C25D5/50H01M2/02H01M50/119H01M50/128H01M50/14
CPCY02E60/12Y02E60/10
Inventor 周益春潘勇王建兴李玮周兆峰堵艳艳杜超黄勇力
Owner HUNAN YONGSHENG NEW MATERIALS
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