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Resin-coated stainless steel foil, container and secondary battery

A stainless steel foil and coating technology, applied in the direction of secondary batteries, lithium batteries, alkaline batteries, etc., can solve the problems of high cost and complicated technology, and achieve the effect of good corrosion resistance and excellent puncture resistance

Active Publication Date: 2008-12-24
NIPPON STEEL CHEM &MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is technically cumbersome and costly to print clearly or to make color changes uniform by direct printing on stainless steel foil, so it is difficult to give high designability to stainless steel foil

Method used

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  • Resin-coated stainless steel foil, container and secondary battery
  • Resin-coated stainless steel foil, container and secondary battery
  • Resin-coated stainless steel foil, container and secondary battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～16

[0120] As the stainless steel foil used in this example, SUS316L Bright A manufactured by Nippon Steel Co., Ltd. with a thickness of 50 μm was used.

[0121] The nickel strike plating in Examples 9-16 and Comparative Examples 2-4 was implemented as follows. Pickling with 30mol% sulfuric acid aqueous solution, pickling with 15mol% hydrochloric acid aqueous solution, nickel strike plating solution is nickel chloride 240g / L, hydrochloric acid (density 1.18) 125mL / L, at 5A / dm 2 The cathodic current density is energized for 5 seconds. All were processed at room temperature.

[0122] Chromate treatment is used by appropriately adding phosphoric acid, hydrochloric acid, ammonium fluoride, etc. 2 The cathodic current density forms a chromate treatment layer. When the weight per unit area of ​​the chromate treatment increases, the treatment time is prolonged, and when it decreases, the treatment time is shortened. Specifically, if the processing layer is set to 200nm, the current i...

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Abstract

A resin-coated stainless steel foil that can maintain strong adherence to films even in an electrolyte solution and exhibit good corrosion resistance, excelling in processability, designability and stab resistance; and, making use of the same, a container and secondary battery. There is provided a resin-coated stainless steel foil characterized by having a chromate-treated layer of 2 to 200nm superimposed on at least one major surface of stainless steel foil and having, superimposed on the chromate-treated layer, at least a layer of polyolefin resin (A) containing a polar functional group. Further, there are provided, making use of the same, a container and secondary battery.

Description

technical field [0001] The present invention relates to a resin-coated stainless steel foil, a container, and a secondary battery excellent in corrosion resistance, processability, designability, and puncture resistance. Background technique [0002] Secondary batteries such as nickel-cadmium batteries, nickel-hydrogen batteries, and lithium-ion batteries are widely used in electronic equipment and electronic components, especially in mobile phones, notebook computers, video cameras, satellites, electric and hybrid vehicles. Conventionally, in secondary batteries using strong alkali electrolytes such as nickel-cadmium and nickel-hydrogen, a case made of nickel-plated cold-rolled steel sheet or a plastic case has been used. Also, in a battery using a non-aqueous electrolyte like a lithium-ion battery, the electrolyte contained in an aluminum bag is covered with a plastic case, or a nickel-plated steel or stainless steel case is used. [0003] In recent years, along with the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/085C25D11/38C23C22/00H01M2/02H01M50/105H01M50/119H01M50/121H01M50/128H01M50/133H01M50/145
CPCB32B15/08B32B15/18C25D5/56H01M10/052H01M10/0585H01M10/0587H01M10/24Y10T428/13Y10T428/265C25D11/38Y02E60/10H01M50/124Y02P70/50H01M50/105H01M50/133H01M50/121H01M50/145H01M50/128H01M50/119C23C22/00B32B15/085
Inventor 茨木雅晴上代洋大石浩
Owner NIPPON STEEL CHEM &MATERIAL CO LTD
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